CN102135698A - Transmission-type all-optical fiber light pulse coder - Google Patents
Transmission-type all-optical fiber light pulse coder Download PDFInfo
- Publication number
- CN102135698A CN102135698A CN 201110060671 CN201110060671A CN102135698A CN 102135698 A CN102135698 A CN 102135698A CN 201110060671 CN201110060671 CN 201110060671 CN 201110060671 A CN201110060671 A CN 201110060671A CN 102135698 A CN102135698 A CN 102135698A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- pulses
- light pulse
- coder
- delay line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention provides a transmission-type all-optical fiber light pulse coder. In the coder, a light pulse signal is input to a 1*N optical fiber coupler and is divided into N paths of pulses, wherein each path of optical fiber of the 1*N optical fiber coupler is correspondingly connected with a variable optical fiber attenuator, a variable optical fiber delay line and each path of another 1*N optical fiber coupler in turn respectively; and the N paths of pulses are synthesized into a coding light pulse sequence consisting of N pulses in a time domain through the variable optical fiber attenuator, the variable optical fiber delay line and the 1*N optical fiber coupler, wherein any sub-pulse amplitude in the coding light pulse sequence is adjusted by the variable optical fiber attenuator, the spacing between adjacent sub-pulses is coarsely controlled by total optical fiber length of each path of optical fiber device and is continuously and precisely adjusted by the variable optical fiber delay line, and a light source which generates light pulse is changed to adjust the width and shape of pulse laser input into the coder so as to change the width and shape of the sub-pulses. The coder can generate a coding light pulse sequence in which any sub-pulse amplitude and the spacing between adjacent pulses can be adjusted and the width and shape of the sub-pulses can be optionally transformed, and the coder is simple in structure.
Description
Technical field
The invention belongs to the optical fiber light pulse device technique field in the laser instrument, be specifically related to a kind of transmission-type full optical fiber optical optical pulse encoder, especially can produce the full optical fiber optical optical pulse encoder that subpulse amplitude and at interval any scalable, subpulse can have the coded light pulses sequence of any width and shape.
Background technology
At present, the method for known generation coded light pulses is to adopt electrical method to produce sequence of electric pulses, and the continuous laser that is added in modulation input waveguide modulator on the waveguide amplitude modulator by sequence of electric pulses produces the coded light pulses sequence.But, because the electrical pulse sequence that adopts electrical method to produce is difficult to accomplish that the interval of sub-electric pulse is adjustable continuously, and sub-electronic pulse width and interval also are difficult to accomplish less than 100ps, so the subpulse width of the coded light pulses sequence that produces and interval are generally greater than 100ps, and the shape of subpulse can not be adjusted.
Summary of the invention
For the subpulse shape that overcomes the coded light pulses sequence that existing light pulse coding method produces with can not adjust at interval and the subpulse width can only be greater than the deficiency of 100ps, the invention provides a kind of transmission-type full optical fiber optical optical pulse encoder, this light pulse scrambler can not only produce the coded light pulses sequence, can also adjust any subpulse amplitude and adjacent subpulse interval in the coded light pulses sequence continuously, and the width of subpulse can be less than 100ps, and the subpulse shape is adjustable arbitrarily.
The technical solution adopted in the present invention is: each road optical fiber of 1 * N fiber coupler respectively successively with variable fibre optic attenuator, each road correspondence of variable fibre delay line and another 1 * N fiber coupler is connected, pulsed laser signal input 1 * N fiber coupler is divided into the pulse of N road, the pulse of N road is through variable fibre optic attenuator, synthesize the coded light pulses sequence of forming by N pulse in time domain behind variable fibre delay line and another 1 * N fiber coupler, any subpulse amplitude is by the adjusting that decays continuously of variable fibre optic attenuator in the coded light pulses sequence, and the interval of adjacent subpulse is regulated by the thick control of optical fiber total length of every road optical fibre device and by variable fibre delay line continuous precision in the coded light pulses sequence.The light source that produces light pulse by conversion can be adjusted the pulsed laser width and the shape of input coding device, so the subpulse width shape conversion arbitrarily of the coded light pulses sequence of output optical pulse scrambler, and width does not have the restriction of 100ps.
The invention has the beneficial effects as follows, can produce the coded light pulses sequence of any subpulse amplitude and adjacent pulse at interval adjustable and subpulse width and any conversion of shape, simple in structure.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention 1.
Fig. 2 is the structural representation of embodiments of the invention 2.
1. 1 * N fiber coupler among the figure, 2. variable fibre optic attenuator, 3. variable fibre delay line, 4. fiber amplifier.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
In the embodiment shown in fig. 1,1 * N fiber coupler, 1 beam splitting output terminal n(n is among the 1-N any one the tunnel) road optical fiber is connected with the variable fibre optic attenuator 2 in this road, variable fibre delay line 3, variable fibre delay line 3 output terminals and another 1 * N fiber coupler 1 n(n are among the 1-N any one the tunnel) the end input optical fibre is connected successively.Input pulse is divided into the pulse of N road through 1 * N fiber coupler 1 by constant power, the pulse of every road is regulated decay through variable fibre optic attenuator 2 and is changed its amplitude, its time delay, another 1 * N fiber coupler, 1 composite coding light pulse sequence output was passed through in each road pulse at last by the thick control of optical fiber total length of this road optical fibre device and through variable fibre delay line 2 minute adjustment.
In embodiment illustrated in fig. 2,1 * N fiber coupler, 1 beam splitting output terminal n(n is among the 1-N any one the tunnel) road optical fiber is connected with the variable fibre optic attenuator 2 in this road, variable fibre delay line 3 and fiber amplifier 4 input ends, fiber amplifier 4 output terminals and another 1 * N fiber coupler 1 n(n are among the 1-N any one the tunnel) the end input optical fibre is connected successively.Input pulse is divided into the pulse of N road through 1 * N fiber coupler 1 by constant power, the pulse of every road is regulated decay through variable fibre optic attenuator 2 and is changed its amplitude, its time delay is by the thick control of optical fiber total length of this road optical fibre device and through variable fibre delay line 2 minute adjustment, its beam splitting loss is amplified compensation by fiber amplifier 4, and another 1 * N fiber coupler, 1 composite coding light pulse sequence output is passed through in each road pulse at last.
In embodiment illustrated in figures 1 and 2, the optical fiber that 1 * N fiber coupler 1, variable fibre optic attenuator 2, variable fibre delay line 3, fiber amplifier 4 adopt can be single-mode fiber or polarization maintaining optical fibre; 1 * N fiber coupler 1 can be by 1 * n(n＜N) the fiber coupler cascade constitutes; Can adopt variable fibre optic attenuator 2 electric light, magneto-optic, acousto-optic and other methods realize the scalable decay of light pulse.
Claims (2)
1. transmission-type full optical fiber optical optical pulse encoder, it is characterized in that: the every road of 1 * N fiber coupler (1) beam splitting output terminal optical fiber is connected successively with the variable fibre optic attenuator in this road (2), variable fibre delay line (3), and variable fibre delay line (3) output terminal connects with another corresponding road of 1 * N fiber coupler (1) optical fiber.
2. transmission-type full optical fiber optical optical pulse encoder according to claim 1 is characterized in that: described scrambler is provided with fiber amplifier (4) between variable fibre delay line (3) and another 1 * N fiber coupler (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060671 CN102135698A (en) | 2011-03-15 | 2011-03-15 | Transmission-type all-optical fiber light pulse coder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060671 CN102135698A (en) | 2011-03-15 | 2011-03-15 | Transmission-type all-optical fiber light pulse coder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102135698A true CN102135698A (en) | 2011-07-27 |
Family
ID=44295518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110060671 Pending CN102135698A (en) | 2011-03-15 | 2011-03-15 | Transmission-type all-optical fiber light pulse coder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102135698A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529609A (en) * | 2016-03-02 | 2016-04-27 | 北方工业大学 | Adjustable square/triangular optical pulse synthesizer |
| CN107835049A (en) * | 2017-11-09 | 2018-03-23 | 西安电子科技大学 | A kind of laser communication method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000007317A1 (en) * | 1998-07-30 | 2000-02-10 | Codestream Technologies Corporation | Method and apparatus for reduced interference in optical cdma |
| US6687036B2 (en) * | 2000-11-03 | 2004-02-03 | Nuonics, Inc. | Multiplexed optical scanner technology |
| US6728490B1 (en) * | 1999-05-12 | 2004-04-27 | Nec Corporation | Optical transmitter, optical receiver, optical transmission system, and optical transmission method |
| JP2005070382A (en) * | 2003-08-25 | 2005-03-17 | Tokyo Institute Of Technology | Optical digital-to-analog conversion type code-identifying device and method |
| CN202008567U (en) * | 2011-03-15 | 2011-10-12 | 中国工程物理研究院激光聚变研究中心 | Transmissive all-fiber optical pulse coder |
-
2011
- 2011-03-15 CN CN 201110060671 patent/CN102135698A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000007317A1 (en) * | 1998-07-30 | 2000-02-10 | Codestream Technologies Corporation | Method and apparatus for reduced interference in optical cdma |
| US6728490B1 (en) * | 1999-05-12 | 2004-04-27 | Nec Corporation | Optical transmitter, optical receiver, optical transmission system, and optical transmission method |
| US6687036B2 (en) * | 2000-11-03 | 2004-02-03 | Nuonics, Inc. | Multiplexed optical scanner technology |
| JP2005070382A (en) * | 2003-08-25 | 2005-03-17 | Tokyo Institute Of Technology | Optical digital-to-analog conversion type code-identifying device and method |
| CN202008567U (en) * | 2011-03-15 | 2011-10-12 | 中国工程物理研究院激光聚变研究中心 | Transmissive all-fiber optical pulse coder |
Non-Patent Citations (1)
| Title |
|---|
| 《ELECTRONICS LETTERS》 20010927 T.Saida等 Integrated optical digital-to-analogue converter and its application to pulse pattern recognition 第37卷, 第20期 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529609A (en) * | 2016-03-02 | 2016-04-27 | 北方工业大学 | Adjustable square/triangular optical pulse synthesizer |
| CN107835049A (en) * | 2017-11-09 | 2018-03-23 | 西安电子科技大学 | A kind of laser communication method |
| CN107835049B (en) * | 2017-11-09 | 2020-10-09 | 西安电子科技大学 | Laser communication method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Boscolo et al. | Passive nonlinear pulse shaping in normally dispersive fiber systems | |
| US9166355B2 (en) | Directly driven source of multi-gigahertz, sub-picosecond optical pulses | |
| CN107078452A (en) | UV visible laser systems with ultrashort high power and/or high energy pulse | |
| CN101639602A (en) | Novel high-speed optical pulse compression system | |
| CN202008567U (en) | Transmissive all-fiber optical pulse coder | |
| CN106094266A (en) | Multi-wavelength optical fiber acousto-optic frequency shifters | |
| CN101771235B (en) | Method for generating phase noise-controlled low repetition frequency femtosecond laser pulse | |
| CN102135698A (en) | Transmission-type all-optical fiber light pulse coder | |
| Triki et al. | Chirped self-similar solitary waves for the generalized nonlinear Schrödinger equation with distributed two-power-law nonlinearities | |
| CN101825827A (en) | Analog-to-digital converter for time domain broadening of differential light pulse | |
| CN101266342B (en) | Polarization state for controlling two bundle of pulsed laser by out-cavity electro-optical polarization controller | |
| CN109556659B (en) | Single-ended detection Brillouin dynamic grating sensing method | |
| CN110231058A (en) | A kind of the chaos Brillouin's dynamic raster generation device and method of ground noise inhibition | |
| CN201984266U (en) | Reflection full optical fiber pulse encoder | |
| CN102914882A (en) | Time division pulse laser device | |
| CN102135697A (en) | Reflecting all-optical fiber light pulse coder | |
| CN110061779B (en) | Optical fiber communication system | |
| CN204012178U (en) | Optical fiber type pulse stretching and compression set based on polarization beam splitting | |
| CN104901653A (en) | Arbitrary time domain waveform generator for generating high-repetition frequency subnanosecond pulse width | |
| CN208189970U (en) | Enlarged structure is divided in pulse | |
| CN202008541U (en) | Reflective polarization maintaining all optical fiber optical pulse encoder | |
| CN102347587A (en) | Stimulated Brillouin scattering generation method | |
| CN202260112U (en) | Single longitudinal mode wavelength-switchable fiber laser device | |
| CN102608827A (en) | Device and method for suppressing stimulated Brillouin scattering of pulse laser by use of magneto-optical effect | |
| Shahoei et al. | Continuously tunable chirped microwave waveform generation using a tilted fiber Bragg grating written in an Erbium/Ytterbium codoped fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110727 |