CN103563274A - Optical device, wireless signal transmitting device and system - Google Patents
Optical device, wireless signal transmitting device and system Download PDFInfo
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- CN103563274A CN103563274A CN201380000604.XA CN201380000604A CN103563274A CN 103563274 A CN103563274 A CN 103563274A CN 201380000604 A CN201380000604 A CN 201380000604A CN 103563274 A CN103563274 A CN 103563274A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/90—Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation
Abstract
An embodiment of the invention provides an optical device, a wireless signal transmitting device and system and relates to the technical field of communication. The optical device includes a first laser used for outputting a first optical signal; a chirp laser used for producing a second optical signal and receiving an electric acess signal and the first optical signal. The electric access signal modulates the second optical signal in the chirp laser and enables the first optical signal and the modulated second optical signal to beat under this circumstance meeting relative conditions, so that frequenecy signals on optical millimeter waves are formed. The optical device includes an optical beam splitting lens used for leading the first optical signal output by the first laser device into the chirp laser and changes transmission direction of laser carrying the frequency conversion signal on the optical millimeter waves output by the chirp laser. The optical device also includes a first straightening lens and a second straightening lens.according to the invention, when the first optical signal and the second signal in beating, coherence is kept, so that frequency stability of optical millimeter waves obtained through beating is good and phase noise is low.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of optical device, wireless signal transmitting device and system.
Background technology
Along with the development of radio digital terminal equipment, people also have higher requirement to the network bandwidth.Although optical fiber access can realize two-forty access more than Gbps, it is subject to the restriction of geographic factor, cannot meet moving freely of wireless terminal device.Although and wireless access access is convenient, it is little at low-frequency range available bandwidth, the highest 54Mbps that can only reach of traditional wireless access, is difficult to meet the needs of high bandwidth; Meanwhile, wireless access is subject to again the constraint of very big loss at available high band, and transmission range is only tens meters of scopes conventionally.Therefore, in order to meet the needs of wireless terminal device to access, high bandwidth, in conjunction with the ROF(Radio Over Fiber of optical fiber access technology and wireless access technology, light-carried wireless) communication technology arises at the historic moment.
ROF technology had both utilized optical fiber to realize the long Distance Transmission of signal, utilize again wireless access to realize broadband wireless access that can be comparable with optical fiber access rate, to provide ubiquitous large capacity, the technology of the broadband wireless access based on optical fiber, so ROF cheaply to there is vast potential for future development.
In existing access network, first digital baseband signal is modulated on laser, then by optical fiber, carry out long-distance transmissions, optical network unit carries out opto-electronic conversion to it after receiving optical fiber transmission signal, obtain electricity access signal, wireless signal transmitting device receives electricity access signal and adopts ROF technology to be modulated on electric millimeter wave to be launched, and user realizes transfer of data by receiving this electricity millimeter wave.Existing a kind of wireless signal transmitting device that adopts monolithic dual laser to realize, in this device, monolithic twin-laser by forming the grating of two row different cycles on its ridge waveguide, make this laser can produce the different laser of two bundle wavelength, two bundle laser produce optical millimeter wave in the inner beat effect by light of laser, by this optical millimeter wave, by opto-electronic conversion, be electric millimeter wave, and finally for wireless access.
Yet at least there is following problem in prior art:
Although the two bundle laser that monolithic dual laser produces are to produce in same gain media resonant cavity, but do not have coherence between above-mentioned two bundle laser, so the frequency stability of the optical millimeter wave of this two bundles laser beat effect generation is poor and phase noise is large, thereby the jitter that causes user to receive, affects normal transmission.
Summary of the invention
In order to solve the problem that frequency stability is poor and phase noise is large of the optical millimeter wave that in prior art, dual laser beat effect produces, the embodiment of the present invention provides a kind of optical device, wireless signal transmitting device and system.Described technical scheme is as follows:
First aspect, the embodiment of the present invention provides a kind of optical device, and described optical device comprises:
The first laser, for exporting the first light signal, the frequency of described the first light signal is F1;
Chirped laser, for generation of the second light signal, and receive described first light signal of a road electricity access signal and described the first laser output, described electricity access signal is modulated described the second light signal in described chirped laser, described the second light signal after making described the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of described the second light signal is F2, and in the frequency range of the spectrum of warbling of described second light signal of the frequency F1 of described the first light signal after modulation, described optical millimeter wave up-conversion signal is the laser that has carried millimeter wave up-conversion signal,
Optical beam splitting lens, for described first light signal of described the first laser output is imported to described chirped laser, and change the output of described chirped laser described in carried the laser of millimeter wave up-conversion signal the direction of propagation, by the output port of optical device described in the described laser guide that carries millimeter wave up-conversion signal;
The first collimating lens, for becoming directional light by the laser of described the first laser output;
The second collimating lens, for becoming directional light by the laser of described chirped laser output;
Described the first collimating lens is located at the output of described the first laser, and described the second collimating lens is located at the output of described chirped laser; Described optical beam splitting lens are located in the light path of laser of described the first laser and described chirped laser output.
In conjunction with first aspect, in one implementation, described the first laser is semiconductor direct current laser.
In conjunction with first aspect and above-mentioned implementation, in another implementation, the angle of the laser of the minute surface of described optical beam splitting lens and chirped laser output is 45 °, and the angle of the laser of the minute surface of described optical beam splitting lens and the output of the first laser is 45 °.
In conjunction with first aspect and above-mentioned implementation, in another implementation, described in the spectrum that spectrum be take centered by F2, scope is 1～3 nanometer of warbling.
In conjunction with first aspect and above-mentioned implementation, in another implementation, described chirped laser is direct modulated laser.
In conjunction with first aspect and above-mentioned implementation, in another implementation, the transmission rate of described electricity access signal is 1Mbps～6Gbps.
Second aspect, the embodiment of the present invention also provides a kind of wireless signal transmitting device, and described device comprises:
The first laser, for exporting the first light signal, the frequency of described the first light signal is F1;
Chirped laser, for generation of the second light signal, and receive described first light signal of a road electricity access signal and described the first laser output, described electricity access signal is modulated described the second light signal in described chirped laser, described the second light signal after making described the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of described the second light signal is F2, and in the frequency range of the spectrum of warbling of described second light signal of the frequency F1 of described the first light signal after modulation, described optical millimeter wave up-conversion signal is the laser that has carried millimeter wave up-conversion signal,
Optical beam splitting lens, for described first light signal of described the first laser output is imported to described chirped laser, and change the output of described chirped laser described in carried the laser of millimeter wave up-conversion signal the direction of propagation, by the described output port that has carried the laser guide optical device of millimeter wave up-conversion signal;
The first collimating lens, for becoming directional light by the laser of described the first laser output;
The second collimating lens, for becoming directional light by the laser of described chirped laser output;
Described the first collimating lens is located at the output of described the first laser, and described the second collimating lens is located at the output of described chirped laser, and described optical beam splitting lens are located in the light path of laser of described the first laser and described chirped laser output;
Photodetector, the optical millimeter wave up-conversion signal producing for receiving described optical device, and described optical millimeter wave up-conversion signal is converted to electric millimeter-wave signal.
In conjunction with second aspect, in one implementation, described the first laser is semiconductor direct current laser.
In conjunction with second aspect and above-mentioned implementation, in another kind of implementation, the angle of the laser of the minute surface of described optical beam splitting lens and chirped laser output is 45 °, and the angle of the laser of the minute surface of described optical beam splitting lens and the output of the first laser is 45 °.
In conjunction with second aspect and above-mentioned implementation, in another kind of implementation, described in the spectrum that spectrum be take centered by F2, scope is 1～3 nanometer of warbling.
In conjunction with second aspect and above-mentioned implementation, in another kind of implementation, described chirped laser is direct modulated laser.
In conjunction with second aspect and above-mentioned implementation, in another kind of implementation, described photodetector is unidirectional charge carrier photodetector.
In conjunction with second aspect and above-mentioned implementation, in another implementation, described device also comprises:
Cable interface, for receiving described electricity access signal;
Driver, exports described chirped laser after amplifying for the described electricity access signal that described cable interface is received.
In conjunction with second aspect and above-mentioned implementation, in another implementation, described device also comprises:
Antenna, for launching the described electric millimeter-wave signal being converted to by described photodetector.
In conjunction with second aspect and above-mentioned implementation, in another implementation, the transmission rate of described electricity access signal is 1Mbps～6Gbps.
The third aspect, the embodiment of the present invention also provides a kind of wireless signal transmission system, described system comprises some optical line terminals, optical fiber, some optical network units and some wireless signal transmitting devices, described optical line terminal is connected with described optical network unit by described optical fiber, and described in each, optical network unit connects some described wireless signal transmitting devices by cable;
Described wireless signal transmitting device is wireless signal transmitting device as above.
The beneficial effect of the technical scheme that the embodiment of the present invention provides is:
By chirped laser, produce the second light signal, and receive the first light signal of a road electricity access signal and the output of the first laser, electricity access signal is modulated the second light signal in chirped laser, the second light signal after making the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of the second light signal is F2, and the frequency F1 of the first light signal, in frequency range due to the spectrum of warbling of the frequency F1 of the first light signal the second light signal after modulation, thereby while traversing near frequency F1 in the second light signal is being warbled spectrum, the instantaneous frequency of the second light signal and instantaneous phase are locked by the first light signal, can make the coherence of two light greatly strengthen, and two smooth coherence times are much larger than the duration of electricity access signal high level, therefore when two light carry out beat, kept extremely strong coherence, the frequency stability of the optical millimeter wave that therefore beat goes out is good, and phase noise is low, the jitter of having avoided user to receive, thereby realize normal transmission.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the optical device that provides of the embodiment of the present invention one;
Fig. 2 is the electricity access signal schematic representation that the embodiment of the present invention two provides;
Fig. 3 is the chirped light spectrogram of the second light signal after the modulation that provides of the embodiment of the present invention two;
Fig. 4 is the Frequency Locking schematic diagram that the embodiment of the present invention two provides;
Fig. 5 is the beat schematic diagram that the embodiment of the present invention two provides;
Fig. 6 is the millimeter-wave frequency schematic diagram that the embodiment of the present invention two provides;
Fig. 7 is the schematic diagram of the optical millimeter wave up-conversion signal that provides of the embodiment of the present invention two;
Fig. 8 is the structural representation of the wireless signal transmitting device that provides of the embodiment of the present invention three;
Fig. 9 is the structural representation of the wireless signal transmitting device that provides of the embodiment of the present invention four;
Figure 10 is the structural representation of the wireless signal transmission system that provides of the embodiment of the present invention five.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment mono-
The embodiment of the present invention provides a kind of optical device, and for generation of optical millimeter wave, referring to Fig. 1, this optical device comprises:
The first laser 101, for exporting the first light signal, the frequency of the first light signal is F1;
Chirped laser 102, for generation of the second light signal, and receive the first light signal of a road electricity access signal and the first laser 101 outputs, electricity access signal is modulated the second light signal in chirped laser, the second light signal after making the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of the second light signal is F2, and in the frequency range of the spectrum of warbling of second light signal of the frequency F1 of the first light signal after modulation, above-mentioned optical millimeter wave up-conversion signal is the laser that has carried millimeter wave up-conversion signal, this millimeter wave up-conversion signal is the millimeter wave that carries the data message of electricity access signal,
Optical beam splitting lens 103, for the first light signal of the first laser output is imported to chirped laser 102, and change the direction of propagation of the laser that has carried millimeter wave up-conversion signal of chirped laser 102 output, this has been carried to the output port of the laser guide optical device of millimeter wave up-conversion signal;
The first collimating lens 104, for becoming directional light by the laser of the first laser 101 outputs;
The second collimating lens 105, for becoming directional light by the laser of chirped laser 102 outputs;
The first collimating lens 104 is located at the output of the first laser 101, and the second collimating lens 105 is located at the output of chirped laser 102; Optical beam splitting lens 103 are located in the light path of laser of the first laser 101 and chirped laser 102 outputs.
Hold intelligiblely, above-mentioned laser and light signal belong to same thing, just when transmitting as signal, adopt signal to be described, and adopt laser to be described when propagating as light.
The embodiment of the present invention produces the second light signal by chirped laser, and receive the first light signal of a road electricity access signal and the output of the first laser, electricity access signal is modulated the second light signal in chirped laser, the second light signal after making the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of the second light signal is F2, and the frequency F1 of the first light signal, in frequency range due to the spectrum of warbling of the frequency F1 of the first light signal the second light signal after modulation, thereby while traversing near frequency F1 in the second light signal is being warbled spectrum, the instantaneous frequency of the second light signal and instantaneous phase are locked by the first light signal, can make the coherence of two light greatly strengthen, and two smooth coherence times are much larger than the duration of electricity access signal high level, therefore when two light carry out beat, kept extremely strong coherence, the frequency stability of the optical millimeter wave that therefore beat goes out is good, and phase noise is low, the jitter of having avoided user to receive, thereby realize normal transmission.
Embodiment bis-
The embodiment of the present invention provides a kind of optical device, referring to Fig. 1, comprises the first laser 101, chirped laser 102, optical beam splitting lens 103, the first collimating lens 104 and the second collimating lens 105 in embodiment mono-, described.Wherein, the first laser 101 can be semiconductor direct current laser.Chirped laser 102 can be direct modulated laser.
Particularly, the angle of the laser of the minute surface of optical beam splitting lens 103 and chirped laser 102 outputs can be 40 °～50 °, and the angle of the laser of the minute surface of optical beam splitting lens 103 and the first laser 101 outputs can be 40 °～50 °.Preferably, the angle of the laser of the minute surface of optical beam splitting lens 103 and chirped laser 102 outputs is 45 °, and the angle of the laser of the minute surface of optical beam splitting lens 103 and the first laser 101 outputs is 45 °.These optical beam splitting lens 103 are realized by semi-transparent semi-reflecting principle, the chirped laser 102 that the laser of the first laser 101 outputs can be delivered to.For example, can make light at plated film on normal mirror face is not all to reflect but the reflection of a part of transmission part, and the thickness of plated film can be the quarter-wave of laser.
Particularly, the spectrum that spectrum be take centered by F2, scope is 1～3 nanometer of warbling.
Wherein, the transmission rate of electricity access signal can be in 6Gbps.Preferably, the transmission rate of electricity access signal is 1Mbps～6Gbps.
Below in conjunction with Fig. 2-Fig. 7, the operation principle of the optical device that the embodiment of the present invention is provided is simply described:
The first light signal of the first laser 101 outputs is by the first collimating lens 104, optical beam splitting lens 103 and the rear injection chirped laser 102 of the second collimating lens 105, in frequency range due to the spectrum of warbling of the frequency F1 of the first light signal the second light signal after modulation, in the time of near the second light signal instantaneous frequency traverses F1, the instantaneous frequency of the second light signal and phase place can be by the first light signal lockings (as shown in Figure 4), the instantaneous frequency of the second light signal is identical with the first light signal with phase place, and the coherence of two light greatly strengthens; Because access the duration (approximately 1 nanosecond) of the level " 1 " of signal coherence time (approximately 200 nanosecond) much larger than Gbps electricity, therefore, as shown in Figure 5, within the duration of electricity access signal level " 1 ", the coherence of two light is maintained again; When finish hopping edge, it is stable that carrier concentration is recovered, the second optical signal frequency reverts to F2, and the coherence of the second light signal and the first light signal is still maintained, the second light signal and the first light signal form ultralow phase noise optical millimeter wave in the interior beat of chirped laser 102, the frequency of this optical millimeter wave is the difference F1-F2 of two light frequencies, as shown in Figure 6; Meanwhile, owing to having adopted the electric access of Gbps signal to modulate the second light signal, be therefore equivalent to Gbps electricity access signal to be modulated on the optical millimeter wave of beat generation, produced optical millimeter wave up-conversion signal, as shown in Figure 7.Wherein, locking is exactly the instantaneous frequency of a signal and frequency and the phase place that phase place is followed another signal.
The embodiment of the present invention produces the second light signal by chirped laser, and receive the first light signal of a road electricity access signal and the output of the first laser, electricity access signal is modulated the second light signal in chirped laser, the second light signal after making the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of the second light signal is F2, and the frequency F1 of the first light signal, in frequency range due to the spectrum of warbling of the frequency F1 of the first light signal the second light signal after modulation, thereby while traversing near frequency F1 in the second light signal is being warbled spectrum, the instantaneous frequency of the second light signal and instantaneous phase are locked by the first light signal, can make the coherence of two light greatly strengthen, and two smooth coherence times are much larger than the duration of electricity access signal high level, therefore when two light carry out beat, kept extremely strong coherence, the frequency stability of the optical millimeter wave that therefore beat goes out is good, and phase noise is low, the jitter of having avoided user to receive, thereby realize normal transmission.
Embodiment tri-
The embodiment of the present invention provides a kind of wireless signal transmitting device, and referring to Fig. 8, this device comprises:
As embodiment mono-or two optical device 301 and the photodetectors 302 of describing.
The embodiment of the present invention produces the second light signal by chirped laser, and receive the first light signal of a road electricity access signal and the output of the first laser, electricity access signal is modulated the second light signal in chirped laser, the second light signal after making the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of the second light signal is F2, and the frequency F1 of the first light signal, in frequency range due to the spectrum of warbling of the frequency F1 of the first light signal the second light signal after modulation, thereby while traversing near frequency F1 in the second light signal is being warbled spectrum, the instantaneous frequency of the second light signal and instantaneous phase are locked by the first light signal, can make the coherence of two light greatly strengthen, and two smooth coherence times are much larger than the duration of electricity access signal high level, therefore when two light carry out beat, kept extremely strong coherence, the frequency stability of the optical millimeter wave that therefore beat goes out is good, and phase noise is low, the jitter of having avoided user to receive, thereby realize normal transmission.
Embodiment tetra-
The embodiment of the present invention provides a kind of wireless signal transmitting device, and referring to Fig. 9, this device comprises:
Preferably, photodetector 302 is unidirectional charge carrier photodetector.
Further, this device also comprises:
Optical millimeter wave up-conversion signal forms electric millimeter-wave signal after by photodetector 302 opto-electronic conversion, through antenna 405 transmittings, forms wireless coverages.
Wherein, the transmission rate of electricity access signal is in 6Gbps.Preferably, the transmission rate of electricity access signal is 1Mbps～6Gbps.
The embodiment of the present invention produces the second light signal by chirped laser, and receive the first light signal of a road electricity access signal and the output of the first laser, electricity access signal is modulated the second light signal in chirped laser, the second light signal after making the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of the second light signal is F2, and the frequency F1 of the first light signal, in frequency range due to the spectrum of warbling of the frequency F1 of the first light signal the second light signal after modulation, thereby while traversing near frequency F1 in the second light signal is being warbled spectrum, the instantaneous frequency of the second light signal and instantaneous phase are locked by the first light signal, can make the coherence of two light greatly strengthen, and two smooth coherence times are much larger than the duration of electricity access signal high level, therefore when two light carry out beat, kept extremely strong coherence, the frequency stability of the optical millimeter wave that therefore beat goes out is good, and phase noise is low, the jitter of having avoided user to receive, thereby realize normal transmission.
Embodiment five
The embodiment of the present invention provides a kind of wireless signal transmission system, and referring to Figure 10, this system comprises:
Some optical line terminals 501, optical fiber 502, some optical network units 503 and some wireless signal transmitting devices 504, this wireless signal transmitting device 504 can be above-described embodiment three or four wireless signal transmitting devices of describing;
Easily know, optical line terminal 501 generally includes laser 5011 and electrooptic modulator 5012, and this electrooptic modulator 5012 is connected with optical network unit 503 with laser 5011 respectively, optical line terminal 501 receives as PSTN(Public Switched Telephone Network, PSTN), VoIP (Voice over Internet Protocol, IP phone), IPTV(Internet Protocol Television, IPTV), Internet(internet) etc. signal is as downstream signal, by electrooptic modulator, adjust 5012 to make on the light signal sending to laser 5011, by multiplexer (not shown), the light signal after modulation is passed through to WDM(Wavelength Division Multiplexing, wavelength division multiplexing) system is sent in the demodulation multiplexer (not shown) of far-end, demodulation multiplexer is transported to the optical network unit 503 of user side after carrying out demultiplexing filtering to the received signal, optical network unit 503, by after opto-electronic conversion, need to be distributed to user's signal and separate according to related protocol, this part signal is the electricity access signal for accessing in wireless signal transmitting device 504.
The embodiment of the present invention produces the second light signal by chirped laser, and receive the first light signal of a road electricity access signal and the output of the first laser, electricity access signal is modulated the second light signal in chirped laser, the second light signal after making the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of the second light signal is F2, and the frequency F1 of the first light signal, in frequency range due to the spectrum of warbling of the frequency F1 of the first light signal the second light signal after modulation, thereby while traversing near frequency F1 in the second light signal is being warbled spectrum, the instantaneous frequency of the second light signal and instantaneous phase are locked by the first light signal, can make the coherence of two light greatly strengthen, and two smooth coherence times are much larger than the duration of electricity access signal high level, therefore when two light carry out beat, kept extremely strong coherence, the frequency stability of the optical millimeter wave that therefore beat goes out is good, and phase noise is low, the jitter of having avoided user to receive, thereby realize normal transmission.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (16)
1. an optical device, is characterized in that, described optical device comprises:
The first laser, for exporting the first light signal, the frequency of described the first light signal is F1;
Chirped laser, for generation of the second light signal, and receive described first light signal of a road electricity access signal and described the first laser output, described electricity access signal is modulated described the second light signal in described chirped laser, described the second light signal after making described the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of described the second light signal is F2, and in the frequency range of the spectrum of warbling of described second light signal of the frequency F1 of described the first light signal after modulation, described optical millimeter wave up-conversion signal is the laser that has carried millimeter wave up-conversion signal,
Optical beam splitting lens, for described first light signal of described the first laser output is imported to described chirped laser, and change the output of described chirped laser described in carried the laser of millimeter wave up-conversion signal the direction of propagation, by the output port of optical device described in the described laser guide that carries millimeter wave up-conversion signal;
The first collimating lens, for becoming directional light by the laser of described the first laser output;
The second collimating lens, for becoming directional light by the laser of described chirped laser output;
Described the first collimating lens is located at the output of described the first laser, and described the second collimating lens is located at the output of described chirped laser, and described optical beam splitting lens are located in the light path of laser of described the first laser and described chirped laser output.
2. optical device according to claim 1, is characterized in that, described the first laser is semiconductor direct current laser.
3. optical device according to claim 1 and 2, is characterized in that, the angle of the laser of the minute surface of described optical beam splitting lens and chirped laser output is 45 °, and the angle of the laser of the minute surface of described optical beam splitting lens and the output of the first laser is 45 °.
4. according to the optical device described in claim 1-3 any one, it is characterized in that, described in the spectrum that spectrum be take centered by F2, scope is 1～3 nanometer of warbling.
5. according to the optical device described in claim 1-4 any one, it is characterized in that, described chirped laser is direct modulated laser.
6. according to the optical device described in claim 1-5 any one, it is characterized in that, the transmission rate of described electricity access signal is 1Mbps～6Gbps.
7. a wireless signal transmitting device, is characterized in that, described device comprises:
The first laser, for exporting the first light signal, the frequency of described the first light signal is F1;
Chirped laser, for generation of the second light signal, and receive described first light signal of a road electricity access signal and described the first laser output, described electricity access signal is modulated described the second light signal in described chirped laser, described the second light signal after making described the first light signal and modulating carries out beat in the situation that meeting coherent condition, form optical millimeter wave up-conversion signal, the frequency of described the second light signal is F2, and in the frequency range of the spectrum of warbling of described second light signal of the frequency F1 of described the first light signal after modulation, described optical millimeter wave up-conversion signal is the laser that has carried millimeter wave up-conversion signal,
Optical beam splitting lens, for described first light signal of described the first laser output is imported to described chirped laser, and change the output of described chirped laser described in carried the laser of millimeter wave up-conversion signal the direction of propagation, by the described output port that has carried the laser guide optical device of millimeter wave up-conversion signal;
The first collimating lens, for becoming directional light by the laser of described the first laser output;
The second collimating lens, for becoming directional light by the laser of described chirped laser output;
Described the first collimating lens is located at the output of described the first laser, and described the second collimating lens is located at the output of described chirped laser, and described optical beam splitting lens are located in the light path of laser of described the first laser and described chirped laser output;
Photodetector, the optical millimeter wave up-conversion signal producing for receiving described optical device, and described optical millimeter wave up-conversion signal is converted to electric millimeter-wave signal.
8. device according to claim 7, is characterized in that, described the first laser is semiconductor direct current laser.
9. according to the device described in claim 7 or 8, it is characterized in that, the angle of the laser of the minute surface of described optical beam splitting lens and chirped laser output is 45 °, and the angle of the laser of the minute surface of described optical beam splitting lens and the output of the first laser is 45 °.
10. according to the device described in claim 7-9 any one, it is characterized in that, described in the spectrum that spectrum be take centered by F2, scope is 1～3 nanometer of warbling.
11. according to the device described in claim 7-10 any one, it is characterized in that, described chirped laser is direct modulated laser.
12. according to the device described in claim 7-11 any one, it is characterized in that, described photodetector is unidirectional charge carrier photodetector.
13. according to the device described in claim 7-12 any one, it is characterized in that, described device also comprises:
Cable interface, for receiving described electricity access signal;
Driver, exports described chirped laser after amplifying for the described electricity access signal that described cable interface is received.
14. according to the device described in claim 7-13 any one, it is characterized in that, described device also comprises:
Antenna, for launching the described electric millimeter-wave signal being converted to by described photodetector.
15. according to the device described in claim 7-14 any one, it is characterized in that, the transmission rate of described electricity access signal is 1Mbps～6Gbps.
16. 1 kinds of wireless signal transmission systems, described system comprises some optical line terminals, optical fiber, some optical network units and some wireless signal transmitting devices, described optical line terminal is connected with described optical network unit by described optical fiber, and described in each, optical network unit connects some described wireless signal transmitting devices by cable;
It is characterized in that, described wireless signal transmitting device is the wireless signal transmitting device as described in claim 7-15 any one.
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| PCT/CN2013/074940 WO2014176722A1 (en) | 2013-04-28 | 2013-04-28 | Optical device, and wireless signal transmitting apparatus and system |
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| CN103563274A true CN103563274A (en) | 2014-02-05 |
| CN103563274B CN103563274B (en) | 2016-02-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106299978A (en) * | 2016-10-18 | 2017-01-04 | 深圳市太赫兹科技创新研究院有限公司 | Terahertz generation system based on unidirectional carrier transport photodetector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694234A (en) * | 1994-10-20 | 1997-12-02 | Lucent Technologies Inc. | Wavelength division multiplexing passive optical network including broadcast overlay |
| CN1983906A (en) * | 2005-12-22 | 2007-06-20 | 华为技术有限公司 | Passive light network for wave duplexing and its realization |
| CN101286803A (en) * | 2008-05-30 | 2008-10-15 | 北京北方烽火科技有限公司 | Optimizing method for dual and locked mode optical fiber wireless wave division multiplexing system |
| US20110069964A1 (en) * | 2009-09-18 | 2011-03-24 | Nec Laboratories America, Inc. | Optical Signal Sideband Millimeter-Wave Signal Generation for Super-Broadband Optical Wireless Network |
-
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- 2013-04-28 WO PCT/CN2013/074940 patent/WO2014176722A1/en active Application Filing
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694234A (en) * | 1994-10-20 | 1997-12-02 | Lucent Technologies Inc. | Wavelength division multiplexing passive optical network including broadcast overlay |
| CN1983906A (en) * | 2005-12-22 | 2007-06-20 | 华为技术有限公司 | Passive light network for wave duplexing and its realization |
| CN101286803A (en) * | 2008-05-30 | 2008-10-15 | 北京北方烽火科技有限公司 | Optimizing method for dual and locked mode optical fiber wireless wave division multiplexing system |
| US20110069964A1 (en) * | 2009-09-18 | 2011-03-24 | Nec Laboratories America, Inc. | Optical Signal Sideband Millimeter-Wave Signal Generation for Super-Broadband Optical Wireless Network |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299978A (en) * | 2016-10-18 | 2017-01-04 | 深圳市太赫兹科技创新研究院有限公司 | Terahertz generation system based on unidirectional carrier transport photodetector |
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| CN103563274B (en) | 2016-02-17 |
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