CN103412367B - On a kind of sheet of integrated light guide chip, polarization does not rely on system - Google Patents
On a kind of sheet of integrated light guide chip, polarization does not rely on system Download PDFInfo
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Abstract
On the sheet that the invention discloses a kind of integrated light guide chip, polarization does not rely on system.On the sheet of integrated light guide chip, polarization does not rely on system and comprises polarization conversion module, along separate routes/combiner, optical function module and phase modulation module.Be TE1 mould by polarization conversion module by TM0 mode convertion, and then by shunt, TE1 mould be divided into two-way TE0 mould, thus realize the polarization of integrated optic component to optical signal prosessing and do not rely on.The present invention does not rely on the modal cutoff structure based on directional coupler, avoids the change of the larger device property that coupled structure produces due to fabrication error, has good process allowance.Whole system structure is simple, has stronger stability and reliability, is beneficial to integrated and practical, can in widespread use and optical mode multiplex communication system.
Description
Technical field
The present invention relates to fiber waveguide device, on the sheet being specifically related to a kind of integrated light guide chip, polarization does not rely on system.
Background technology
Along with developing rapidly of science and technology, the information carrying capacity of the communications field increases day by day, the requirement of people to bandwidth is more and more higher, and High rate and large capacity optical communication system is inexorable trend, optical-fiber network how can efficiently, at high speed transmission of information become one of people's research focus.Wavelength-division multiplex (Wavelength Division Multiplexing) technology can transmit multiple wavelength channel over the same fiber simultaneously, substantially increases the availability of frequency spectrum of optical fiber communication.But in existing DWDM (Dense Wavelength Division Multiplexing dense wave division multipurpose) system, the utilization factor Developing Tendency near limit of wavelength channel, more difficult by increasing wavelength channel dilatation.
In order to improve Optical Fiber Transmission capacity further, Land use models multiplex technique, improves Single wavelength channel capacity and can meet this requirement.In a light wavelength channel, utilize two orthogonal polarized light patterns to carry different Signal transmissions, the signal that each wavelength carries is double, and channel multiplexing degree expands to original twice, adds transmission capacity and the availability of frequency spectrum.But because optically functional device various in system has different operating characteristic for the light signal of different polarization pattern, i.e. polarization dependence, and consider from the angle of practical application and commercialization, in a set of light path system, design the function element of two component safety pins to different polarization pattern is unpractical, so how to solve polarization dependence, optically functional device is only worked become in one mode the gordian technique in mode multiplexing technology.
In existing polarization independent solution, substantially be all the modal cutoff structure based on directional coupler or multimode interference, orthogonal TE mould and TM mould are separated in different light paths, wherein will convert another kind to by mode transition structure by a certain polarization mode.But modal cutoff structure needs the precision of higher manufacture craft, stability and reliability lower, what be unfavorable in systems in which is practical.
Summary of the invention
Polarization on a kind of sheet of integrated light guide chip is the object of the present invention is to provide not rely on system.Be TE1 mould by mode converter by the TM0 mode convertion transmitted in optical waveguide, be TE0 mould by shunt by the beam splitting of TE1 mould again, signal only transmits with a kind of polarization mode in the optical path, be the transmission of TM0 mould by TE0 mode convertion by symmetrical process again after function element process, thus the polarization achieving system does not rely on.
The technical solution adopted for the present invention to solve the technical problems is:
On the sheet of one, a kind of integrated light guide chip, polarization does not rely on system:
The present invention includes forward polarization modular converter, Y type waveguide splitter, two optical function modules, two phase modulation module, Y type waveguide combiner and abnormal polorization modular converters.
The light that there are orthogonal TE0 mould and TM0 mould two kinds of patterns is input to forward polarization modular converter, and the TM0 mode convertion in input light is that TE1 mould keeps original TE0 modular invariance simultaneously by forward polarization modular converter; And then TE0 mould and TE1 mould are from forward polarization modular converter input Y type waveguide splitter, TE1 mould is divided into amplitude symmetry by Y type waveguide splitter, two-way+TE0/2 the mould that phase place is contrary and ﹣ TE0/2 mould, original TE0 mould is divided into full symmetric two-way+TE0/2 mould, then light is divided into respectively containing being converted into+TE0/2 mould by TE0, being converted into+TE0/2 mould by TE1 and being converted into+TE0/2 mould by TE0, be converted into the two-way light of ﹣ TE0/2 mould by TE1 simultaneously; The two-way light that Y type waveguide splitter exports inputs identical optical function module respectively and carries out signal transacting; And then two-way light respectively input phase modulation module the phase place of two-way light is changed identically output to Y type waveguide combiner respectively afterwards, in Y type waveguide combiner, the+TE0/2 be converted into by the TE0 mould of two-way homophase is combined into TE0 mould, + the TE0/2 be converted into by the TE1 mould that two-way is anti-phase and ﹣ TE0/2 mould are combined into TE1 mould, then two-way light synthesizes road TE0 mould and a TE1 mould again; And then the TE0 mould that exports of Y type waveguide combiner and TE1 mould input abnormal polorization modular converter, be the TE0 modular invariance that mould TM0 mould keeps new synthesis simultaneously by TE1 mode convertion, what finally export is through the orthogonal TE0 mould of optical function module polarization ind light process and the light of TM0 mould.
On the sheet of two, another kind of integrated light guide chip, polarization does not rely on system:
The present invention includes forward polarization modular converter, Y type waveguide splitter, two optical function modules, two phase modulation module, Y type waveguide combiner and abnormal polorization modular converters; It is characterized in that:
The light that there are orthogonal TE0 mould and TM0 mould two kinds of patterns is input to forward polarization modular converter, and the TM0 mode convertion in input light is that TE1 mould keeps original TE0 modular invariance simultaneously by forward polarization modular converter; And then TE0 mould and TE1 mould are from forward polarization modular converter input Y type waveguide splitter, TE1 mould is divided into amplitude symmetry by Y type waveguide splitter, two-way+TE0/2 the mould that phase place is contrary and ﹣ TE0/2 mould, original TE0 mould is divided into full symmetric two-way+TE0/2 mould simultaneously, then light be divided into respectively containing being converted into+TE0/2 mould by TE0, be converted into+TE0/2 mould by TE1 and TE0 is converted into+TE0/2 mould, is converted into the two-way light of ﹣ TE0/2 mould by TE1; The two-way light that Y type waveguide splitter exports inputs identical optical function module respectively and carries out signal transacting; And then two-way light respectively input phase modulation module make the phase place of two-way light change difference for outputting to Y type waveguide combiner respectively after π, in Y type waveguide combiner, the+TE0/2 be converted into by the TE1 mould of two-way homophase is combined into TE0 mould, + the TE0/2 be converted into by the TE0 mould that two-way is anti-phase and ﹣ TE0/2 mould are combined into TE1 mould, then two-way light synthesizes road TE0 mould and a TE1 mould again; And then Y type waveguide combiner) the TE0 mould that exports and TE1 mould input abnormal polorization modular converter, be the TE0 modular invariance that mould TM0 mould keeps new synthesis simultaneously by TE1 mode convertion, what finally export is through the orthogonal TE0 mould of optical function module polarization ind light process and the light of TM0 mould.
Described forward polarization modular converter is identical with abnormal polorization modular converter structure, and input and output direction is contrary in systems in which; Y type waveguide splitter is identical with Y type waveguide combiner structure, and be identical Symmetric Y type waveguiding structure, input and output direction is contrary in systems in which.
Described forward polarization modular converter is the tapered transmission line structure that duct width linear transitions broadens, and described abnormal polorization modular converter is the reverse geometry of forward polarization modular converter;
Described optical function module is modulator, wave filter, switch or multiplex/demultiplex optically functional device.
Described phase modulation module for be covered with metal fever electrode on single mode waveguide lag line.
Compared with the polarization independent solution of background technology, the beneficial effect that the present invention has is:
Adopt the tapered transmission line of duct width linear change and Symmetric Y type waveguide splitter by the patten transformation of TM polarization and be separated into the pattern of two-way TE polarization, the polarization realizing light path does not rely on.It does not rely on the modal cutoff structure based on directional coupler, avoids the change of the larger device property that coupled structure produces due to fabrication error, has good process allowance.Whole system structure is simple, has stronger stability and reliability, is beneficial to integrated and practical, can in widespread use and optical mode multiplex communication system.
Accompanying drawing explanation
Fig. 1 is symmetrical light path syndeton schematic block diagram of the present invention.
Fig. 2 is antisymmetry light path syndeton schematic block diagram of the present invention.
Fig. 3 is that in the present invention, two kinds of polarization conversion modules are the tapered transmission line structural principle schematic diagram that duct width linear transitions changes.
Fig. 4 is the structural principle schematic diagram of Y type waveguide splitter and Y type waveguide combiner in the present invention.
Fig. 5 is the structural principle schematic diagram of phase modulation module in the present invention.
Fig. 6 is that in the present invention, optical function module is the waveguide device based on micro-ring resonant cavity configuration, is solved the system architecture principle schematic of polarization independent by described a series of upper integrated optical waveguide structures.
In figure: 1, forward polarization modular converter, 2, Y type waveguide splitter, 3, optical function module, 4, phase modulation module, 5, Y type waveguide combiner, 6, abnormal polorization modular converter, 101, the tapered transmission line of duct width linear transitions change, 102, TE0 mode profile is illustrated, 103, TM0 mode profile is illustrated, 104, TE1 mode profile is illustrated, 201, the waveguide of Y type, 202, multimode waveguide TE0 mode profile is illustrated, 203, multimode waveguide TE1 mode profile is illustrated, 204, the symmetrical TE0 mode component be divided into by TE0 mould, 205, the antisymmetry TE0 mode component be divided into by TE1 mould, 301, micro-ring waveguide resonator cavity, 302, the straight wave guide be coupled with micro-ring resonant cavity, 401, single mode waveguide lag line, 402, metal fever electrode.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, the present invention includes forward polarization modular converter 1, Y type waveguide splitter 2, two optical function modules 3, two phase modulation module 4, Y type waveguide combiner 5 and abnormal polorization modular converter 6; It is characterized in that:
The light that there are orthogonal TE0 mould and TM0 mould two kinds of patterns is input to forward polarization modular converter 1, and the TM0 mode convertion in input light is that TE1 mould keeps original TE0 modular invariance simultaneously by forward polarization modular converter 1; And then TE0 mould and TE1 mould input Y type waveguide splitter 2 from forward polarization modular converter 1, TE1 mould is divided into amplitude symmetry by Y type waveguide splitter 2, two-way+TE0/2 the mould that phase place is contrary and ﹣ TE0/2 mould, original TE0 mould is divided into full symmetric two-way+TE0/2 mould, then light is divided into respectively containing being converted into+TE0/2 mould by TE0, being converted into+TE0/2 mould by TE1 and being converted into+TE0/2 mould by TE0, be converted into the two-way light of ﹣ TE0/2 mould by TE1 simultaneously; The two-way light that Y type waveguide splitter 2 exports inputs identical optical function module 3 respectively and carries out signal transacting; And then two-way light respectively input phase modulation module 4 phase place of two-way light is changed identically output to Y type waveguide combiner 5 respectively afterwards, in Y type waveguide combiner 5, the+TE0/2 be converted into by the TE0 mould of two-way homophase is combined into TE0 mould, + the TE0/2 be converted into by the TE1 mould that two-way is anti-phase and ﹣ TE0/2 mould are combined into TE1 mould, then two-way light synthesizes road TE0 mould and a TE1 mould again; And then the TE0 mould that exports of Y type waveguide combiner 5 and TE1 mould input abnormal polorization modular converter 6, be the TE0 modular invariance that TM0 mould keeps new synthesis simultaneously by TE1 mode convertion, what finally export is through the orthogonal TE0 mould of optical function module polarization ind light process and the light of TM0 mould.Scheme achieves the light signal by unified symmetrical light path process different polarization pattern, solves the polarization independent problem of optical signal transmission process.
(modal sets becomes to be respectively+TE0/2 (TE0) the described two-way light after identical optical function module 3 signal transacting, + TE0/2 (TE1) and+TE0/2 (TE0), ﹣ TE0/2 (TE1)) input phase modulation module 4, adjustment makes two-way phase differential remain unchanged, be then still anti-phase by the two-way phase place contrary+TE0/2 mould of TE1 mould beam splitting and ﹣ TE0/2 mould, simultaneously by the+TE0/2 mould of the two-way symmetry of TE0 mould beam splitting, still for homophase, (it is still+TE0/2 (TE0) that pattern form constant, + TE0/2 (TE1) and+TE0/2 (TE0), ﹣ TE0/2 (TE1)), and then through described combiner 5 ,+TE0/2 (TE0) and+TE0/2 (TE0) of two-way homophase are combined into TE0 mould again, and the anti-phase+TE0/2 of two-way (TE1) and ﹣ TE0/2 (TE1) is combined into TE1 mould again, be that TM0 mould keeps TE0 modular invariance simultaneously through described abnormal polorization modular converter 6, TE1 mode convertion.Then carrying out former input TE0 mould after the ind optical signal prosessing of polarization through this programme is still TE0 mould, and former input TM0 mould is still TM0 mould, and do not affect the continuation transmission of light signal, whole system light path is symmetrical.
As shown in Figure 2, the present invention includes forward polarization modular converter 1, Y type waveguide splitter 2, two optical function modules, two phase modulation module, Y type waveguide combiner 5 and abnormal polorization modular converters 6; It is characterized in that:
The light that there are orthogonal TE0 mould and TM0 mould two kinds of patterns is input to forward polarization modular converter 1, and the TM0 mode convertion in input light is that TE1 mould keeps original TE0 modular invariance simultaneously by forward polarization modular converter 1; And then TE0 mould and TE1 mould input Y type waveguide splitter 2 from forward polarization modular converter 1, TE1 mould is divided into amplitude symmetry by Y type waveguide splitter 2, two-way+TE0/2 the mould that phase place is contrary and ﹣ TE0/2 mould, original TE0 mould is divided into full symmetric two-way+TE0/2 mould simultaneously, then light be divided into respectively containing being converted into+TE0/2 mould by TE0, be converted into+TE0/2 mould by TE1 and TE0 is converted into+TE0/2 mould, is converted into the two-way light of ﹣ TE0/2 mould by TE1; The two-way light that Y type waveguide splitter 2 exports inputs identical optical function module 3 respectively and carries out signal transacting; And then two-way light respectively input phase modulation module 4 make the phase place of two-way light change difference for outputting to Y type waveguide combiner 5 respectively after π, in Y type waveguide combiner 5, the+TE0/2 be converted into by the TE1 mould of two-way homophase is combined into TE0 mould, + the TE0/2 be converted into by the TE0 mould that two-way is anti-phase and ﹣ TE0/2 mould are combined into TE1 mould, then two-way light synthesizes road TE0 mould and a TE1 mould again; And then the TE0 mould that exports of Y type waveguide combiner 5 and TE1 mould input abnormal polorization modular converter 6, be the TE0 modular invariance that mould TM0 mould keeps new synthesis simultaneously by TE1 mode convertion, what finally export is through the orthogonal TE0 mould of optical function module polarization ind light process and the light of TM0 mould.Scheme achieves the light signal by unified symmetrical light path process different polarization pattern, solves the polarization independent problem of optical signal transmission process.
(modal sets becomes to be respectively+TE0/2 (TE0) the described two-way light after identical optical function module 3 signal transacting, + TE0/2 (TE1) and+TE0/2 (TE0),-TE0/2 (TE1)) input phase modulation module 4, adjustment makes two-way phase differential be π, then homophase can be transferred to by the contrary+TE0/2 mould of the two-way phase place of TE1 mould beam splitting and ﹣ TE0/2 mould, can be transferred from+TE0/2 the mould of the two-way symmetry of TE0 mould beam splitting to anti-phase (pattern forms and becomes+TE0/2 (TE0) simultaneously, + TE0/2 (TE1) and-TE0/2 (TE0), + TE0/2 (TE1)), and then through described combiner 5 ,+TE0/2 (TE1) and+TE0/2 (TE1) of two-way homophase are combined into TE0 mould, and the anti-phase+TE0/2 of two-way (TE0) and-TE0/2 (TE0) is combined into TE1 mould, be that TM0 mould keeps TE0 modular invariance simultaneously through described abnormal polorization modular converter 6, TE1 mode convertion.Then carrying out former input TE0 mode convertion after the ind optical signal prosessing of polarization through this programme is TM0 mould, and former input TM0 mode convertion is TE0 mould, and do not affect the continuation transmission of light signal, whole system light path is antisymmetric.
Described forward polarization modular converter 1 is identical with abnormal polorization modular converter 6 structure, and input and output direction is contrary in systems in which; Y type waveguide splitter 2 is identical with Y type waveguide combiner 5 structure, and be identical Symmetric Y type waveguiding structure, input and output direction is contrary in systems in which.
The tapered transmission line structure that described forward polarization modular converter 1 broadens for duct width linear transitions, described abnormal polorization modular converter 6 is the reverse geometry of forward polarization modular converter 1.
Described optical function module 3 is modulator, wave filter, switch or multiplex/demultiplex optically functional device.
Described phase modulation module 4 for be covered with metal fever electrode on single mode waveguide lag line.
The material of described module is any one in silicon, glass, silicon dioxide, polymkeric substance and III-V.
As shown in Figure 3, the tapered transmission line structure that described forward polarization modular converter 1 broadens for duct width linear transitions, described abnormal polorization modular converter 6 is the reverse geometry of forward polarization modular converter 1.TE0 mould 102 and TM0 mould 103 input described forward polarization modular converter 1, and along with duct width broadens gradually, TE0 mould 102 keeps polarization constant, and TM0 mould 103 can schema evolution be TE1 mould, and polarization direction changes.In described abnormal polorization modular converter 6, this process is just in time contrary.
As shown in Figure 4, described Y type waveguide splitter 2 is Symmetric Y type waveguiding structure, and described Y type waveguide combiner 5 is the reverse geometry of Y type waveguide splitter 2.TE0 mould 202 and TE1 mould 203 input described Y type waveguide splitter 2, because waveguide is beamed into two single mode waveguides from wider multimode waveguide, it is former 1/2 that TE0 mould 202 can develop into two-way energy, + TE0/2 the mould 204 of the symmetry that amplitude is identical, phase place is identical, and TE1 mould 203 can develop into two-way energy is former 1/2, amplitude is identical, the antisymmetric+TE0/2 mould that phase place is contrary and ﹣ TE0/2 mould 205.Then in the two-way waveguide of Y type waveguide splitter 2 output, all only there is TE0 mould single mode transport.In described Y type waveguide combiner 5, this process is just in time contrary.
As shown in Figure 5, described phase modulation module 4 is thermo-optic modulation waveguide delay line structure, and single mode waveguide lag line 401 is covered with metal fever electrode 402.Generate heat by making metal fever electrode 402 at metal fever electrode 402 two ends making alive and change the temperature of material, and then change the refractive index of material, realize the phase-modulation of light.Waveguiding structure illustrated in Figure 4 when it is emphasized that described phase modulation module 4 is electrooptical modulation is applicable equally, just needs to do some adjustment in the design of electrode.
As shown in Figure 6, when optical function module 3 of the present invention is the waveguide device based on micro-ring resonant cavity configuration, the TM0 mould of input is converted to TE1 mould by described forward polarization modular converter 1, TE0 modular invariance simultaneously, two-way single mode transport is divided into by described Y type waveguide splitter 2, wherein TE0 mould is divided into two-way symmetry+TE0/2 mould, and TE1 mould is divided into two-way antisymmetry+TE0/2 mould and ﹣ TE0/2 mould, then what transmit respectively in two-way single mode waveguide is+TE0/2 mould ,+TE0/2 mould and+TE0/2 mould ,-TE0/2 mould.By (device is made up of micro-ring waveguide resonator cavity 301 and the straight wave guide 302 that is coupled with micro-ring resonant cavity) during device based on micro-ring resonant cavity configuration, the signal transacting (modulation, filtering, switch and multiplex/demultiplex) of two-way light is all only operated in TE polarization mode, and polarization has nothing to do.Described phase modulation module 4 regulates the phase place of two ways of optical signals respectively, makes the phase differential of two ways of optical signals be π, then that transmit respectively in two-way single mode waveguide is+TE0/2 ,+TE0/2 and-TE0/2 ,+TE0/2.By described Y type waveguide combiner 5 and abnormal polorization modular converter 6, two-way light is again combined into a road and is converted to TM0 mould and TE0 mould.Whole waveguiding structure realizes the ind optical communication system of polarization.
Embodiments of the present invention are not limited thereto, according to foregoing of the present invention, according to ordinary technical knowledge and the customary means of this area, under the prerequisite not departing from the above-mentioned basic fundamental thought of the present invention, the amendment of other various ways, replacement or change can also be made.Anyone should learn the structure change made under the enlightenment of this programme, and every have identical or close technical scheme with this programme, within the protection domain all falling into the present invention program.
Claims (10)
1. on the sheet of integrated light guide chip, polarization does not rely on a system, comprises forward polarization modular converter (1), Y type waveguide splitter (2), two optical function modules, two phase modulation module, Y type waveguide combiner (5) and abnormal polorization modular converters (6); It is characterized in that:
The light that there are orthogonal TE0 mould and TM0 mould two kinds of patterns is input to forward polarization modular converter (1), and the TM0 mode convertion in input light is that TE1 mould keeps original TE0 modular invariance simultaneously by forward polarization modular converter (1); And then TE0 mould and TE1 mould are from forward polarization modular converter (1) input Y type waveguide splitter (2), TE1 mould is divided into amplitude symmetry by Y type waveguide splitter (2), two-way+TE0/2 the mould that phase place is contrary and ﹣ TE0/2 mould, original TE0 mould is divided into the two-way+TE0/2 mould of full symmetric, then light is divided into respectively containing being converted into+TE0/2 mould by TE0, being converted into+TE0/2 mould by TE1 and being converted into+TE0/2 mould by TE0, be converted into the two-way light of ﹣ TE0/2 mould by TE1 simultaneously; The two-way light that Y type waveguide splitter (2) exports inputs identical optical function module respectively and carries out signal transacting; And then two-way light respectively input phase modulation module the phase place of two-way light is changed identically output to Y type waveguide combiner (5) respectively afterwards, in Y type waveguide combiner (5) ,+TE0/2 be converted into by the TE0 mould of two-way homophase is combined into TE0 mould, + the TE0/2 be converted into by the TE1 mould that two-way is anti-phase and ﹣ TE0/2 mould are combined into TE1 mould, then two-way light synthesizes road TE0 mould and a TE1 mould again; And then the TE0 mould that exports of Y type waveguide combiner (5) and TE1 mould input abnormal polorization modular converter (6), be the TE0 modular invariance that TM0 mould keeps new synthesis simultaneously by TE1 mode convertion, what finally export is through the orthogonal TE0 mould of optical function module polarization ind light process and the light of TM0 mould.
2. on the sheet of a kind of integrated light guide chip according to claim 1, polarization does not rely on system, it is characterized in that: described forward polarization modular converter (1) is identical with abnormal polorization modular converter (6) structure, and input and output direction is contrary in systems in which; Y type waveguide splitter (2) is identical with Y type waveguide combiner (5) structure, and be identical Symmetric Y type waveguiding structure, input and output direction is contrary in systems in which.
3. on the sheet of a kind of integrated light guide chip according to claim 1, polarization does not rely on system, it is characterized in that: the tapered transmission line structure that described forward polarization modular converter (1) broadens for duct width linear transitions, the reverse geometry that described abnormal polorization modular converter (6) is forward polarization modular converter (1).
4. on the sheet of a kind of integrated light guide chip according to claim 1, polarization does not rely on system, it is characterized in that: described optical function module (3) is modulator, wave filter, switch or multiplex/demultiplex optically functional device.
5. on the sheet of a kind of integrated light guide chip according to claim 1, polarization does not rely on system, it is characterized in that: described phase modulation module (4) is covered with metal fever electrode on single mode waveguide lag line.
6. on the sheet of integrated light guide chip, polarization does not rely on a system, comprises forward polarization modular converter (1), Y type waveguide splitter (2), two optical function modules, two phase modulation module, Y type waveguide combiner (5) and abnormal polorization modular converters (6); It is characterized in that:
The light that there are orthogonal TE0 mould and TM0 mould two kinds of patterns is input to forward polarization modular converter (1), and the TM0 mode convertion in input light is that TE1 mould keeps original TE0 modular invariance simultaneously by forward polarization modular converter (1); And then TE0 mould and TE1 mould are from polarization conversion module (1) input Y type waveguide splitter (2), TE1 mould is divided into amplitude symmetry by Y type waveguide splitter (2), two-way+TE0/2 the mould that phase place is contrary and ﹣ TE0/2 mould, original TE0 mould is divided into the two-way+TE0/2 mould of full symmetric simultaneously, then light be divided into respectively containing being converted into+TE0/2 mould by TE0, be converted into+TE0/2 mould by TE1 and TE0 is converted into+TE0/2 mould, is converted into the two-way light of ﹣ TE0/2 mould by TE1; The two-way light that Y type waveguide splitter (2) exports inputs identical optical function module respectively and carries out signal transacting; And then two-way light respectively input phase modulation module make the phase place of two-way light change difference for outputting to Y type waveguide combiner (5) respectively after π, in Y type waveguide combiner (5) ,+TE0/2 be converted into by the TE1 mould of two-way homophase is combined into TE0 mould, + the TE0/2 be converted into by the TE0 mould that two-way is anti-phase and ﹣ TE0/2 mould are combined into TE1 mould, then two-way light synthesizes road TE0 mould and a TE1 mould again; And then the TE0 mould that exports of Y type waveguide combiner (5) and TE1 mould input abnormal polorization modular converter (6), be the TE0 modular invariance that TM0 mould keeps new synthesis simultaneously by TE1 mode convertion, what finally export is through the orthogonal TE0 mould of optical function module polarization ind light process and the light of TM0 mould.
7. on the sheet of a kind of integrated light guide chip according to claim 6, polarization does not rely on system, it is characterized in that: described forward polarization modular converter (1) is identical with abnormal polorization modular converter (6) structure, and input and output direction is contrary in systems in which; Y type waveguide splitter (2) is identical with Y type waveguide combiner (5) structure, and be identical Symmetric Y type waveguiding structure, input and output direction is contrary in systems in which.
8. on the sheet of a kind of integrated light guide chip according to claim 6, polarization does not rely on system, it is characterized in that: the tapered transmission line structure that described forward polarization modular converter (1) broadens for duct width linear transitions, the reverse geometry that described abnormal polorization modular converter (6) is forward polarization modular converter (1).
9. on the sheet of a kind of integrated light guide chip according to claim 6, polarization does not rely on system, it is characterized in that: described optical function module (3) is modulator, wave filter, switch or multiplex/demultiplex optically functional device.
10. on the sheet of a kind of integrated light guide chip according to claim 6, polarization does not rely on system, it is characterized in that: described phase modulation module (4) is covered with metal fever electrode on single mode waveguide lag line.
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