CN104596958B - The analysis method of the biochemical sensor based on series connection LPWG - Google Patents
The analysis method of the biochemical sensor based on series connection LPWG Download PDFInfo
- Publication number
- CN104596958B CN104596958B CN201510024712.1A CN201510024712A CN104596958B CN 104596958 B CN104596958 B CN 104596958B CN 201510024712 A CN201510024712 A CN 201510024712A CN 104596958 B CN104596958 B CN 104596958B
- Authority
- CN
- China
- Prior art keywords
- lpwg
- tested
- sandwich layer
- long
- waveguide grating
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention discloses a kind of analysis method of the biochemical sensor based on series connection LPWG, by using the coupled characteristic of LPWG, by the light of the certain bandwidth range in incident light wave centered on resonance wavelength, by LPWG1Tested covering is coupled into, by LPWG2This part is optically coupled into waveguide core layer again, the basic mode with symport in waveguide core layer interferes output.When measured matter changes, the resonance wavelength in output spectra can shift, by detecting that side-play amount can calculate measured matter concentration.The absorption spectrum signal of liquid, realizes the qualitative of measured matter in analysis output spectra.On the one hand solve conventional biochemical sensor carrys out qualitatively problem to the method for the present invention by the single certain sensitive film of expensive and Testing index;On the other hand the bandwidth limitation problems for needing the absorption bands for avoiding water to be brought in liquid, aqueous quantitative determination are solved.
Description
Technical field
The invention belongs to integrated optics field, bio-photon field and spectrum analysis field, and in particular to long period
The Mode Coupling and transmission characteristic of waveguide optical grating, and quantification and qualification model and method in biochemical sensitive mechanism.
Background technology
At present, for the domestic and international biochemical sensor developed, either based on electrochemical principle, microflow control technique or base
In the biochemical sensor that optical principle is detected, generally in the biochemical sensitive membrane of contact surface deposit of device and measured matter, root
The selection of measured matter is completed according to there is physicochemical change to the absorption of predetermined substance or with it by sensitive membrane and is distinguished,
And need volume larger prism and optical circulator.This design, not only increased the design complexity of device, can also
Increase the size and cost of sensor, and each sensitive membrane generally is only capable of carrying out qualitative, sensitive membrane to a kind of respective substance
Can be deteriorated as selectivity occurs in the increase of use time and frequency of use, and produce cross-sensitivity, can so reduce sensing
The sensitivity of device and detection efficiency, cause qualitative inaccurate.
Accurate refractive index (RI) sensing is extremely important for scientific research and commercial Application.Because essentially all of
The quantitative determination of biological and chemical material can realize by detecting its refractive index, so, it is accurate for biochemical sensitive
Really the refractive index of parsing measured matter is a prerequisite.It is generally detected as material demand and solvent is used as and as load by water
Body is admitted to detection zone, if selected absorption information of the detection light source wave band comprising water, can not complete quantitative or can be right
Quantitative result produces considerable influence.The detection light source of specific band like this can only be just selected, which limits detection range.
Particularly in mid and far infrared wave band, the fundamental frequency absorption information of basic all substances (comprising biochemical gas, liquid) is remote red all in
Wave section, the absorption coefficient of material than in big 1~2 order of magnitude of near infrared band, detection sensitivity can be greatly improved, but
In mid and far infrared wave band, the absorption of water is very strong, and the appearance of this challenge brings greatly puzzlement to biochemistry detection.It can be seen that,
During hydrous matter is to biochemical sensitive in the research process of biochemical sensor the adverse effect of quantitative problem carry out further investigation will
It is very important.
The content of the invention
The present invention is the above-mentioned technical problem for solving, and proposes a kind of analysis side of the biochemical sensor based on series connection LPWG
Method.
The technical solution adopted by the present invention is:The analysis method of the biochemical sensor based on series connection LPWG, the sensor
Including sandwich layer and tested covering, in be in contact with tested covering, laterally LPWG is extended in tested covering direction to sandwich layer1With
LPWG2, methods described specifically includes following steps:
S1:Incident light enters through sandwich layer first end, and part light is through LPWG1Tested covering is coupled into, part light is along sandwich layer
Transmission;
S2:Along the part light of tested covering transmission through LPWG2It is coupled into sandwich layer;
S3:The part interference of light of co-propagate is exported in sandwich layer of the part light with step S1 obtained by step S2, is obtained
Output spectra, calculates the side-play amount and the wherein absorption spectrum information of material of resonance wavelength in analysis output spectra.
Further, in step S1, can be through LPWG1The part light for being coupled into tested covering is in being with resonance wavelength
The light of certain bandwidth range of the heart.
Further, the sandwich layer is rectangular waveguide, and the tested covering is rectangular waveguide.
Further, it is characterised in that the step S1 is specially:Incident light enters from waveguide first end, by length
It is L1LPWG1Afterwards, sandwich layer mould is respectively A with the output amplitude of tested cladding modeco(L1) and Acl(L1),
Wherein, Λ is LPWG1Cycle, L1It is LPWG1Length,It is LPWG1Constant,
It is LPWG1The amplitude of the tested cladding mode in place, κ1Represent LPWG1The coefficient of coup,It is LPWG1Locate the width of sandwich layer mould
Degree,In s1It is and LPWG1Relevant constant,It is light through long
It is L to spend1LPWG1Phase shift afterwards,It is the effective refractive index of sandwich layer mould,To be tested the effective refractive index of cladding mode,It is LPWG1The phase mismatch factor, λ represents resonance centre wavelength.
Further, the step S2 also includes step S20:It is the waveguide of d, sandwich layer mould and tested cladding mode by length
Output amplitude be respectively Aco(L1+ d) and Acl(L1+d);
Wherein, d is LPWG1With LPWG2Connection waveguide length.
Further, the step S2 is specially:It is L by length2LPWG2Afterwards, sandwich layer mould is defeated with tested cladding mode
Go out amplitude respectively Aco(L1+d+L2) and Acl(L1+d+L2);
Wherein, Λ is LPWG2Cycle, L2It is LPWG2Length,It is LPWG2Constant,
It is LPWG2The amplitude of the tested cladding mode in place, κ2Represent LPWG2The coefficient of coup,It is LPWG2Locate the width of sandwich layer mould
Degree,In s2It is and LPWG2Relevant constant,For light passes through
Length is L2LPWG2Phase shift afterwards,It is LPWG2The phase mismatch factor, λ
Represent resonance centre wavelength.
Further, the step S3 is specially:The output of sandwich layer mould with the output of tested cladding mode interfere and obtains defeated
Go out spectrum, the side-play amount and the wherein absorption spectrum information of material of resonance wavelength in analysis output spectra are calculated, while calculating sandwich layer
Mould output is respectively T (L with the power output of tested cladding mode1+d+L2) and R (L1+d+L2),
Wherein, | | | |2" determinant " computing is first done in expression to matrix, then carries out the computing of " mould ".
Further, the waveguide parameter is determined by following methods step;
S01:The square wave of single mode operation in the range of the incident wavelength for determining for resonance wavelength with Marcatili methods
Lead the parameter of sandwich layer physical dimension and sandwich layer;
The rectangular waveguide sandwich layer physical dimension is specifically included:The width a of sandwich layer mould, the height h of sandwich layer mould, the depth of grating
Degree Δ h;
The parameter of the sandwich layer mould is specifically included:Transmission βco, along the transmission K in x, y directionx、Ky, and calculate
In resonance central wavelength lambdaRUnder sandwich layer Effective index
S02:The physical dimension of the tested covering of rectangular waveguide and the ginseng of tested cladding mode are determined with Marcatili methods
Number;
The tested covering physical dimension of the rectangular waveguide is specifically included:The width b of tested cladding mode, is tested the height of cladding mode
Degree h;
The parameter of the tested cladding mode is specifically included:Transmission βcl, along the transmission K in x, y directionx、Ky, and count
Calculate in resonance central wavelength lambdaRUnder tested covering Effective index
S03:According to the effective refractive index of sandwich layer mouldAnd the effective refractive index of tested cladding modeUsing LPWG
Phase-matching conditionDetermine the periods lambda of LPWG.
Beneficial effects of the present invention:The analysis method of the biochemical sensor based on series connection LPWG proposed by the present invention, passes through
Using the coupled characteristic of LPWG, by the light of the certain bandwidth range in incident light wave centered on resonance wavelength, by LPWG1Coupling
Close and enter tested covering, by LPWG2This part is optically coupled into waveguide core layer again, the base with symport in waveguide core layer
Mode interference is exported.When liquid changes, the resonance wavelength in output spectra can shift, by detecting that side-play amount can calculate liquid
Concentration.The absorption spectrum signal of liquid, realizes the qualitative of fluid to be measured in analysis output spectra.On the one hand the method for the present invention solves
Conventional biochemical sensor by the single certain sensitive film of expensive and Testing index carrys out qualitatively problem;On the other hand solve
The bandwidth limitation problems for needing the absorption bands for avoiding water to be brought in liquid, aqueous quantitative determination of having determined.To realize being more than
The high sensitivity of 2000nm/RIU, small size, the LPWG biochemical sensitive technical research of low cost, will detect in military biochemical war agent
Aspect possesses wide application background, can be in people such as the increasingly severe now food for concerning national economy, drug safeties
With important technical support is provided in the solution of field question, with important scientific meaning and far-reaching realistic meaning.
Brief description of the drawings
Fig. 1 is the three-dimensional structure diagram of new polymers LPWG biochemical sensors provided in an embodiment of the present invention;
Wherein, 1 is LPWG1, 2 is the cascade waveguide between two LPWG, and 3 is LPWG2, 4 is liquid cladding, and 5 is polymer
Waveguide core layer, 6 is SiO2Covering, 7 is Si substrates, and 8 is liquid turnover micropore.
Fig. 2 is the Mode Coupling and transmission characteristic schematic diagram of sensor mechanism provided in an embodiment of the present invention;
Wherein, (a) is top view, and (b) is cross-sectional view.
Fig. 3 is the calculated results output spectra of biochemical sensor provided in an embodiment of the present invention.
Fig. 4 is the solution of the present invention flow chart.
Specific embodiment
For ease of skilled artisan understands that technology contents of the invention, enter one to present invention below in conjunction with the accompanying drawings
Step explaination.
It is as shown in Figure 1 the three-dimensional structure diagram of new polymers LPWG biochemical sensors of the invention, referring to the solid of Fig. 1
Structure chart, sensor of the invention is by two series connection long-period waveguide grating, i.e. LPWG1 and LPWG2, and fluid to be measured is used as side
Bread crumb is constituted.Part optical signals are coupled into tested covering 4 by incident light through waveguide first end into LPWG1, in sandwich layer
Light enters LPWG by one section of straight wave guide 22.Sandwich layer uses polymeric material, and other coverings in addition to tested covering 4 use dioxy
SiClx.Whole sensor is by sandwich layer 5, SiO2Covering 6, substrate 7 and micropore 8 are constituted.
The Mode Coupling and transmission characteristic schematic diagram of the sensor mechanism of invention are illustrated in figure 2, as shown with LPWG
Coupled characteristic, by the light of the certain bandwidth range in incident light centered on resonance wavelength, certain bandwidth range passes through
Specific grating sets and determines, its method for solving refers to document《The lithium niobate long-period waveguide grating of electro-optical tuning is old to be opened
It is prosperous, the intelligent .2012 of Li Jun》, by LPWG1Tested covering is coupled into, by LPWG2This part is optically coupled into sandwich layer again, with
The sandwich layer Mode interference output of symport in sandwich layer.When measured matter changes, the resonance wavelength in output spectra can shift,
For example, when measured matter is liquid, by detecting that side-play amount calculates strength of fluid, the absorption spectrum of liquid in analysis output spectra
Signal, realizes the qualitative of fluid to be measured.
The analysis method of the biochemical sensor based on series connection LPWG of the invention, specifically includes following steps:
Carry out key parameter calculating first, the key parameter calculate include it is following step by step:
S01:The square wave of single mode operation in the range of the incident wavelength for determining for resonance wavelength with Marcatili methods
Lead the parameter of sandwich layer physical dimension and sandwich layer mould;
The rectangular waveguide sandwich layer physical dimension is specifically included:The width a of sandwich layer, the height h of sandwich layer, the tooth Δ high of grating
h;
The parameter of the sandwich layer mould is specifically included:Transmission β, along the transmission K in x, y directionx、Ky, and calculate
Sandwich layer Effective index under resonance central wavelength lambdaSpecific computational methods are the common method of this area, herein not
Elaborate again.
S02:The physical dimension and tested covering of the tested covering of rectangular waveguide in step 1a are determined with Marcatili methods
The parameter of mould;
The tested covering physical dimension of the rectangular waveguide is specifically included:The width b of tested covering, is tested the height h of covering;
The parameter of the tested cladding mode is specifically included:Transmission β, along the transmission K in x, y directionx、Ky, and calculate
The tested bag Effective index gone out under resonance central wavelength lambda
S03:According to the effective refractive index of sandwich layer mouldAnd the effective refractive index of tested cladding modeUsing LPWG
Phase-matching conditionThereby determine that the periods lambda of LPWG.
Secondly, according to the key parameter for drawing, output spectra calculating is carried out, is illustrated in figure 4 the solution of the present invention flow chart,
Specifically include it is following step by step:
S1:As shown in the top view (a) and cross-sectional view (b) of Fig. 2, the cycle of LPWG is Λ, i.e. LPWG1And LPWG2Week
Phase is Λ, LPWG1And LPWG2Length be respectively L1And L2, L in the present embodiment1=L2=L, LPWG1And LPWG2Connection ripple
The length led is d, and the width of fiber waveguide is a, is highly h, and the depth of grating is Δ h, and the refractive index of sandwich layer is nco, it is tested covering
Refractive index be ncl1, the refractive index of under-clad layer is n in waveguidecl2。
Light from waveguide first end, i.e. A ends, by LPWG1Sandwich layer mould is respectively A with the output amplitude of tested cladding mode afterwardsco
(L1) and Acl(L1), by coupled mode theory and transfer matrix method.Draw shown in both values such as formula (1),
Wherein, Λ is LPWG1Cycle, L1It is LPWG1Length,It is LPWG1Constant,
It is LPWG1The amplitude of the tested cladding mode in place, κ1Represent LPWG1The coefficient of coup,It is LPWG1Locate the width of sandwich layer mould
Degree,In s1It is and LPWG1Relevant constant,It is light through long
It is L to spend1LPWG1Phase shift afterwards,It is the effective refractive index of sandwich layer mould,To be tested the effective refractive index of cladding mode,It is LPWG1The phase mismatch factor, λ represents resonance centre wavelength.
S20:It is the waveguide of d by length, sandwich layer mould is respectively A with the output amplitude of tested cladding modeco(L1+ d) and Acl
(L1+d);
Wherein, d is LPWG1And LPWG2Connection waveguide length.
S2:It is again L by length2LPWG2Sandwich layer mould is with the amplitude of cladding mode afterwards,
Wherein, Λ is LPWG2Cycle, L2It is LPWG2Length,It is LPWG2Constant,
It is LPWG2The amplitude of the tested cladding mode in place, κ2Represent LPWG2The coefficient of coup,It is LPWG2Locate the width of sandwich layer mould
Degree,In s2It is and LPWG2Relevant constant,For light passes through
Length is L2LPWG2Phase shift afterwards,It is LPWG2The phase mismatch factor, λ
Represent resonance centre wavelength.
S3:By sandwich layer mould output and tested cladding mode output interfere obtain output spectra as shown in figure 3, in figure respectively to
Go out 3 kinds of different refractivities, i.e. refractive index is respectively:nc1-1、nc1-2、nc1-3, measured matter output spectra, by calculate analyze
The side-play amount of resonance wavelength and the wherein absorption spectrum information of material in output spectra, realize material it is quantitative with it is qualitative, while meter
Calculate the power output respectively T (L of the output of sandwich layer mould and tested cladding mode1+d+L2) and R (L1+d+L2),
Wherein, | | | |2" determinant " computing is first done in expression to matrix, then carries out the computing of " mould ".
Biochemical sensor of the invention uses polymeric material as waveguide core layer in silicon substrate, and in waveguide core side wall system
Make two LPWG of series connection, using measured matter as waveguide covering.Above-mentioned measured matter can for biochemical liquid, biochemical gas or
Person is qualified solid matter etc..The part that will be transmitted in waveguide by two LPWG is optically coupled into liquid cladding,
Sandwich layer is coupled light into through LPWG again after transmitting a segment distance, is finally obtained containing caused by because of measured matter refraction index changing
The side-play amount and measured matter of resonance wavelength absorb the spectral signal of information.
The analysis method of the biochemical sensor based on series connection LPWG proposed by the present invention, the coupling by using LPWG is special
Property, by the light of the certain bandwidth range in incident light wave centered on resonance wavelength, by LPWG1Tested covering is coupled into,
By LPWG2This part is optically coupled into sandwich layer again, the basic mode with symport in sandwich layer interferes output.When measured object qualitative change
During change, the resonance wavelength in output spectra can shift, by detecting that side-play amount can calculate strength of fluid.Quilt in analysis output spectra
The absorption spectrum signal of material is surveyed, the qualitative of measured matter is realized.On the one hand the method for the present invention solves conventional biochemical sensing
Device carrys out qualitatively problem by the single certain sensitive film of expensive and Testing index;On the other hand it is liquid, aqueous fixed to solve
The bandwidth limitation problems for needing the absorption bands for avoiding water to be brought in amount detection.It is highly sensitive more than 2000nm/RIU to realize
Degree, small size, the LPWG biochemical sensitive technical research of low cost, will possess wide application in military biochemical war agent context of detection
Background, can be in the solution of the civil area problems such as the increasingly severe now food for concerning national economy, drug safety
Important technical support is provided, with important scientific meaning and far-reaching realistic meaning.
One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such especially statement and embodiment.For ability
For the technical staff in domain, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made
Any modification, equivalent substitution and improvements etc., should be included within scope of the presently claimed invention.
Claims (8)
1. the analysis method of the biochemical sensor based on series connection LPWG, it is characterised in that the sensor includes sandwich layer and is tested
Covering, in be in contact with tested covering, laterally the first long-period waveguide grating LPWG is extended in tested covering direction to sandwich layer1
With the second long-period waveguide grating LPWG2, methods described specifically includes following steps:
S1:Incident light enters through sandwich layer first end, and part light is through the first long-period waveguide grating LPWG1Tested covering is coupled into,
Part light is transmitted along sandwich layer;
S2:Along the part light of tested covering transmission through the second long-period waveguide grating LPWG2It is coupled into sandwich layer;
S3:The part interference of light of co-propagate is exported in sandwich layer of the part light with step S1 obtained by step S2, is exported
Spectrum, calculates the side-play amount and the wherein absorption spectrum information of material of resonance wavelength in analysis output spectra.
2. method according to claim 1, it is characterised in that in step S1, can be through the first long-period waveguide grating
LPWG1The part light for being coupled into tested covering is the light of the certain bandwidth range centered on resonance wavelength.
3. method according to claim 2, it is characterised in that the sandwich layer is rectangular waveguide, the tested covering is square
Shape waveguide.
4. method according to claim 3, it is characterised in that the step S1 is specially:Incident light is from waveguide first end
Into, by length be L1The first long-period waveguide grating LPWG1Afterwards, sandwich layer mould is distinguished with the output amplitude of tested cladding mode
It is Aco(L1) and Acl(L1),
Wherein, j represents imaginary unit, βcoRepresent the transmission of sandwich layer mould, βclThe transmission of tested cladding mode is represented,It is the first long-period waveguide grating LPWG1Constant, Λ is the first long-period waveguide grating LPWG1Cycle, L1It is
One long-period waveguide grating LPWG1Length,It is the first long-period waveguide grating LPWG1The tested cladding mode in place
Amplitude, κ1Represent the first long-period waveguide grating LPWG1The coefficient of coup,It is the first long-period waveguide grating
LPWG1Locate the amplitude of sandwich layer mould,In s1It is and the first long-period waveguide grating LPWG1Relevant is normal
Number, κ1 *Represent κ1Conjugate complex number, r1 *Represent r1Conjugate complex number, δ be the first long-period waveguide grating LPWG1From the coefficient of coup,For light by length be L1The first long-period waveguide grating LPWG1Phase shift afterwards,It is core
The effective refractive index of layer mould,To be tested the effective refractive index of cladding mode,
It is the first long-period waveguide grating LPWG1The phase mismatch factor, β1It is the first long-period waveguide grating LPWG1Phase mismatch
The parameter of the factor, λ represents resonance wavelength, Aco(0) amplitude of sandwich layer mould initial position, A are representedcl(0) at the beginning of representing tested cladding mode
Beginning position amplitude.
5. method according to claim 3, it is characterised in that the step S2 also includes step S20:It is d by length
Waveguide, sandwich layer mould is respectively A with the output amplitude of tested cladding modeco(L1+ d) and Acl(L1+d);
Wherein, j represents imaginary unit, βcoRepresent the transmission of core film layer, βclRepresent the transmission of tested claddingmode, Aco
(L1) represent that incident light is L by length1LPWG1Sandwich layer mould output amplitude afterwards, Acl(L1) incident light by length be L1's
LPWG1The output amplitude of cladding mode is tested afterwards, and d is the first long-period waveguide grating LPWG1With the second long-period waveguide grating
LPWG2Connection waveguide length.
6. method according to claim 3, it is characterised in that the step S2 is specially:It is L by length2Second length
Period waveguide grating LPWG2Afterwards, sandwich layer mould is respectively A with the output amplitude of tested cladding modeco(L1+d+L2) and Acl(L1+d+
L2);
Wherein, j represents imaginary unit, βcoRepresent the transmission of core film layer, βclThe transmission of tested claddingmode is represented,It is the second long-period waveguide grating LPWG2Constant, Λ is the second long-period waveguide grating LPWG2Cycle, L2It is
Two long-period waveguide grating LPWG2Length,It is the second long-period waveguide grating LPWG2The tested covering in place
The amplitude of mould, κ2Represent the second long-period waveguide grating LPWG2The coefficient of coup,For the second long-period wave is guide-lighting
Grid LPWG2Locate the amplitude of sandwich layer mould,In s2It is and LPWG2Relevant constant, κ2* κ is represented2Conjugation
Plural number, r2* r is represented2Conjugate complex number,For light by length be L2The second long-period wave
Guide grating LPWG2Phase shift afterwards,It is the second long-period waveguide grating LPWG2's
The phase mismatch factor, β2It is the second long-period waveguide grating LPWG2The phase mismatch factor parameter, λ represents resonance wavelength.
7. method according to claim 3, it is characterised in that the step S3 is specially:Sandwich layer mould is exported and is tested
Cladding mode output interfere and obtains output spectra, calculates the side-play amount of resonance wavelength in analysis output spectra and the wherein absorption of material
Spectral information, while calculating the power output respectively T (L of the output of sandwich layer mould and tested cladding mode1+d+L2) and R (L1+d+
L2),
Wherein, Aco(L1+d+L2) represent that incident light is L by length1LPWG1, length for d waveguide, and length be L2's
LPWG2The output amplitude of sandwich layer mould, A afterwardscl(L1+d+L2) incident light by length be L1LPWG1, length for d waveguide, with
And length is L2LPWG2The output amplitude of cladding mode is tested afterwards, | | | |2" determinant " computing is first done in expression to matrix, then
Carry out the computing of " mould ".
8. the method according to claim 4 to 7 any one, it is characterised in that the sensor parameters are by following methods
Step determines:
S01:The rectangular waveguide core of single mode operation in the range of the incident wavelength for determining for resonance wavelength with Marcatili methods
The parameter of layer physical dimension and sandwich layer;
The rectangular waveguide sandwich layer physical dimension is specifically included:The width a of sandwich layer, the height h of sandwich layerco, the depth delta h of grating;
The parameter of the sandwich layer mould is specifically included:Transmission βco, along the transmission K in x, y directionxco、Kyco, and calculate
Sandwich layer Effective index under resonance wavelength
S02:The physical dimension of the tested covering of rectangular waveguide and the parameter of tested cladding mode are determined with Marcatili methods;
The tested covering physical dimension of the rectangular waveguide is specifically included:The width b of tested covering, is tested the height h of coveringcl;
The parameter of the tested cladding mode is specifically included:Transmission βcl, along the transmission K in x, y directionxcl、Kycl, and calculate
The tested covering Effective index gone out under resonance wavelength
S03:According to the effective refractive index of sandwich layer mouldAnd the effective refractive index of tested cladding modeUsing the phase of LPWG
Matching conditionDetermine the periods lambda of LPWG.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510024712.1A CN104596958B (en) | 2015-01-19 | 2015-01-19 | The analysis method of the biochemical sensor based on series connection LPWG |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510024712.1A CN104596958B (en) | 2015-01-19 | 2015-01-19 | The analysis method of the biochemical sensor based on series connection LPWG |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104596958A CN104596958A (en) | 2015-05-06 |
CN104596958B true CN104596958B (en) | 2017-06-09 |
Family
ID=53122879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510024712.1A Expired - Fee Related CN104596958B (en) | 2015-01-19 | 2015-01-19 | The analysis method of the biochemical sensor based on series connection LPWG |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104596958B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111239053A (en) * | 2018-11-28 | 2020-06-05 | 中国科学院大连化学物理研究所 | Method for detecting critical polymerization concentration of compound by dynamic mass resetting method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5864641A (en) * | 1997-04-11 | 1999-01-26 | F&S, Inc. | Optical fiber long period sensor having a reactive coating |
CN1712928A (en) * | 2005-07-01 | 2005-12-28 | 重庆工学院 | MZ interference SPR chemical and biological sensor and system with fibre-optical microstructure |
CN202041222U (en) * | 2011-03-29 | 2011-11-16 | 哈尔滨工程大学 | In-wall waveguide long-period fiber grating sensor |
GB2514326A (en) * | 2013-03-26 | 2014-11-26 | Stephen Wayne James | A fibre optic chemical sensor that is insensitive to the influence of interfering parameters |
-
2015
- 2015-01-19 CN CN201510024712.1A patent/CN104596958B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5864641A (en) * | 1997-04-11 | 1999-01-26 | F&S, Inc. | Optical fiber long period sensor having a reactive coating |
CN1712928A (en) * | 2005-07-01 | 2005-12-28 | 重庆工学院 | MZ interference SPR chemical and biological sensor and system with fibre-optical microstructure |
CN202041222U (en) * | 2011-03-29 | 2011-11-16 | 哈尔滨工程大学 | In-wall waveguide long-period fiber grating sensor |
GB2514326A (en) * | 2013-03-26 | 2014-11-26 | Stephen Wayne James | A fibre optic chemical sensor that is insensitive to the influence of interfering parameters |
Non-Patent Citations (2)
Title |
---|
Widely tunable polymer long-period waveguide grating with polarisation-insensitive resonance wavelength;K.S. Chiang et al.;《ELECTRONICS LETTERS》;20040401;第40卷(第7期);第422-424页 * |
改进长周期波导光栅折射率传感特性的研究;王子豪 等;《量子电子学报》;20070731;第24卷(第4期);第500-504页 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111239053A (en) * | 2018-11-28 | 2020-06-05 | 中国科学院大连化学物理研究所 | Method for detecting critical polymerization concentration of compound by dynamic mass resetting method |
Also Published As
Publication number | Publication date |
---|---|
CN104596958A (en) | 2015-05-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106996920B (en) | It is a kind of to work in the low-refraction PCF-SPR sensor of middle infrared band | |
CN104266999B (en) | A kind of instrument for determining index of refraction of liquid based on D plastic fibre-optical probe | |
CN103308476B (en) | Based on two micro-ring resonant cavity optics biochemical sensitive chips of cursor effect | |
CN104316445A (en) | Optical fiber DNA molecule sensor based on inclined raster and manufacturing method and application thereof | |
CN105526971B (en) | A kind of temperature based on cascade coupled microcavity/refractive index biparameter sensor | |
CN104535091A (en) | Optical fiber sensing unit and application thereof for simultaneously measuring refractive index and temperature | |
CN105651731A (en) | Optical fiber structure-based liquid refraction index sensor | |
CN105928903A (en) | Optical sensor based on cascaded optical resonant cavities | |
CN105675536A (en) | Metal grating surface plasma effect biological-detection chip for THz-TDS system | |
CN104596958B (en) | The analysis method of the biochemical sensor based on series connection LPWG | |
CN203385650U (en) | Epitaxial grating FP (Fabry-Perot) cavity and microring resonator cascaded optical biochemical sensor chip | |
CN203241340U (en) | Grating FP (Fabry-Perot) cavity and microring resonator cascaded optical biochemical sensor chip | |
CN108956525A (en) | A kind of optical fibre bio molecule sensor based on oblique raster | |
CN104949938A (en) | Mach-Zehnder modulation type resonant cavity sensor based on vernier effect | |
CN108982416B (en) | Ultra-narrow band and large-angle high-performance refractive index sensitivity sensing device and testing method thereof | |
CN203385660U (en) | Slit optical waveguide and epitaxial grating FP (Fabry-Perot) cavity cascaded optical biochemical sensor chip | |
CN203241339U (en) | Vernier effect based optical resonator biochemical sensor chip | |
CN103293103B (en) | Extension grating FP chamber and micro-ring resonant cavity cascade connection type optics biochemical sensitive chip | |
CN103558183B (en) | MZ interference type optical biochemistry sensor chip embedded with FP cavity | |
Shi et al. | Joint optimization of quality factor and sensitivity: Research on the performance quantification of two dimensional photonic crystal biosensor | |
CN101271067A (en) | Method for measuring liquid chromatic dispersion refractive index and absorption coefficient | |
CN103308479B (en) | A kind of based on cursor effect optical resonator biochemical sensitive chip | |
CN106908401A (en) | A kind of binary channels water quality environment fibre-optical sensing device and method based on cascade cavity-type BPM | |
CN209707370U (en) | A kind of high-performance refractive index sensitivity senser element of ultra-narrow band, wide-angle | |
CN205403833U (en) | Two -parameter sensor of temperature / refracting index based on cascade coupling microcavity |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20200119 |
|
CF01 | Termination of patent right due to non-payment of annual fee |