CN105227260B - The coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type - Google Patents
The coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type Download PDFInfo
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Abstract
The invention discloses a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type.Including the first input waveguide, the second input waveguide and multiple wavelength channel receiving units；First input waveguide and the second input waveguide are arranged in parallel, and multiple wavelength channel receiving units are sequentially provided with along wave guide direction interval between the first input waveguide and the second input waveguide；The TE that each wavelength channel receiving unit includes being sequentially arranged along the first input waveguide direction polarizes wavelength channel reception group and TM polarization wavelength channel reception groups；First input waveguide and the second input waveguide difference input signal light and local light, are downloaded reception through each wavelength channel receiving unit to the flashlight of different wave length successively.The present invention can be used for palarization multiplexing, the multichannel coherent optical communication system of wavelength-division multiplex, without using polarization beam apparatus, polarization rotator etc., it is to avoid waveguide intersection.Have the advantages that simple in construction, port number is easy to expansion, High Extinction Ratio.
Description
Technical field
The present invention relates to a kind of optic communication reception technique, more particularly, to a kind of the double inclined of micro-ring resonant cavity resonator type
Shake the coherent detection receiver of multi-wavelength, it is adaptable to the coherent optical communication system of palarization multiplexing multicarrier.
Background technology
With the fast development of internet, mobile communication technology, required increasingly for the bandwidth capacity of optical communication system
It is high.Wavelength-division multiplex technique realizes the transmission of simple optical fiber multi-wavelength passage, is effectively increased the capacity of optical transport.With mixing
The invention of doped fiber amplifier, is quickly popularized and is developed in optical communication network.Coherent detection technology is in wavelength-division multiplex
The utilization ratio of frequency spectrum can be effectively improved on the basis of technology, the further bandwidth for improving optical transport is received wide recently
General concern.With the increase of communication port quantity, the number of elements of optical networks transmitter module and Optical Receivers is more next
More, cost more and more higher, the power consumption of simultaneity factor also gradually increases.How low cost, low-power consumption, multichannel, Gao Pu are realized
Efficiency, the optical communication system of long range turn into the target that people pursue.Integrated optics can realize in the plane light beam limitation and
Transmission, realizes the minimizing of multiple function elements, integrated, and large batch of production can also effectively reduce the cost of device, together
When also significantly reduce the power consumption of device.
A variety of upper coherent reception systems realize coherent receiver, the list of application, such as quarter-phase of single carrier list polarization
The differential receiver of the coherent receiver of carrier wave dual-polarization quarter-phase, multicarrier direct detection receiver and multicarrier.At present
100G high speed Optical Receivers is commercial, and the quadrature phase shift key of the single carrier palarization multiplexing of coherent detection is all based on mostly
(PDM-QPSK) the modulation code technology of control.In order to further improve transmission rate, multi-wavelength coherent light communication technology is expected to turn into
Break through super 100G of future generation major technique.
However, rarely having the report of single chip integrated multi-wavelength coherent detection receiver at present.General optical receiver needs not
The local light and polarization beam apparatus of co-wavelength signal separately detect the flashlight of different polarization and local light.With logical
There are many intersections between the increase fiber waveguide of road number so that whole system-on-chip is extremely complex, while also increasing system
The difficulty of phase controlling.Document【Doerr,C.R.；Zhang,L.；Winzer,P.J.,"Monolithic InP
Multiwavelength Coherent Receiver Using a Chirped Arrayed Waveguide Grating,"
Lightwave Technology,Journal of,vol.29,no.4,pp.536,541,Feb.15,2011】Propose that one kind is adopted
The reception of 4 wavelength channels of dual-polarization is realized with the structure based on array waveguide grating, array waveguide grating is simultaneously as solution
Multiplexer, polarization beam apparatus and 90 ° of blender, it is to avoid the intersection between waveguide.However, the design of the structure is complicated, device
Size is big, passage Insertion Loss is big, and the expansion of wavelength channel is poor.Therefore, need badly development it is a kind of it is simple in construction, be easy to expand
Multi-wavelength coherent detection receiver.
The content of the invention
For problem present in background technology, micro-ring resonant cavity array is based on object of the present invention is to provide one kind
Dual-polarization multi-wavelength coherent detection receiver, simple in construction, passage is easy to expand, dual-polarization multi-wavelength coherent light can be achieved and leads to
Letter technology, so as to dramatically increase optical communication link transmission capacity.
The technical solution adopted in the present invention is：
The present invention includes the first input waveguide, the second input waveguide and multiple wavelength channel receiving units；First incoming wave
Lead arranged in parallel with the second input waveguide, be sequentially provided between the first input waveguide and the second input waveguide along wave guide direction interval
Multiple wavelength channel receiving units；The TE that each wavelength channel receiving unit includes being sequentially arranged along the first input waveguide direction is inclined
Vibration wave long-channel reception group and TM polarization wavelength channel reception groups；First input waveguide and the second input waveguide are inputted respectively to be had
The flashlight of multiple wavelength channels and local light, are polarized, TM is polarized to TE respectively through each wavelength channel receiving unit successively
The flashlight of different wave length and local light are downloaded reception.
Described TE polarization wavelength channel reception groups include the slotting parting micro-ring resonant cavity of two TE polarizations, TE and polarized
90 ° of blenders and photoelectricity balance detector array, the slotting parting micro-ring resonant cavity of two TE polarizations are located at the first incoming wave respectively
The inner side between the second input waveguide is led, and is coupled respectively with the first input waveguide and the second input waveguide, two TE polarizations
Slotting parting micro-ring resonant cavity between provided with two single modes connection waveguides arranged in parallel, two single modes connection waveguides and first defeated
Enter that waveguide is parallel, two single modes connection waveguides are input in 90 ° of blenders of TE polarizations, 90 ° of blender output ends of TE polarizations
It is connected to photoelectricity balance detector array and is converted into electric signal.
The slotting parting micro-ring resonant cavity of described two TE polarizations to TE polarization signals light and local light-receiving and is filtered respectively
Ripple, filtered flashlight and local light connect waveguide by respective single mode respectively and are sent in 90 ° of blenders of TE polarizations
Row demodulation, electric signal is formed after most carrying out opto-electronic conversion through light level weighing apparatus detector array afterwards.
Described TM polarization wavelength channel reception groups include the slotting parting micro-ring resonant cavity of two TM polarizations, TM and polarized
90 ° of blenders and photoelectricity balance detector array, the slotting parting micro-ring resonant cavity of two TM polarizations are located at the first incoming wave respectively
The inner side between the second input waveguide is led, and is coupled respectively with the first input waveguide and the second input waveguide, two TM polarizations
Slotting parting micro-ring resonant cavity between provided with two single modes connection waveguides arranged in parallel, two single modes connection waveguides and first defeated
Enter that waveguide is parallel, two single modes connection waveguides are input in 90 ° of blenders of TM polarizations, 90 ° of blender output ends of TM polarizations
It is connected to photoelectricity balance detector array and is converted into electric signal.
Two described slotting parting micro-ring resonant cavities to TM polarization signals light and local light-receiving and are filtered respectively, after filtering
Flashlight and local light respectively by respective single mode connect waveguide be sent to TM polarization 90 ° of blenders in be demodulated, most
Electric signal is formed after carrying out opto-electronic conversion by photoelectricity balance detector array.
Described the first input waveguide and the second input waveguide is single mode waveguide, is respectively used to input the letter of different polarization
Number light and local light.
Separation layer and metal electrode are covered with described slotting parting micro-ring resonant cavity, by adjusting the electricity on loading electrode
Press to tune the operation wavelength of micro-ring resonant cavity.
The slotting parting micro-ring resonant cavity of described two TE polarizations or TM polarizations has identical resonance wavelength, and each wavelength
The resonance wavelength of parting micro-ring resonant cavity is inserted in channel reception unit to fix channel spacing Δ λchEqual-difference arrangement.
Described two TE polarizations or the slotting parting micro-ring resonant cavity of TM polarizations are inputted with the first input waveguide, second respectively
The coefficient of coup between single mode waveguide is identical.
90 ° of described blenders are 2 × 4 passage multiple-mode interfence types, 2 × 4 passages are star-like, the multimode with delay line is done
Relate to the combination of device or the star pattern with delay line etc..
The invention has the advantages that：
The present invention is by introducing the micro-ring resonant cavity array with different resonance wavelengths, by creatively by micro-ring resonant
The wavelength selectivity of chamber, polarization selectivity are effectively used, so as to TE be polarized, the multi-wavelength passage of TM polarizations effectively divides
From, and the flashlight after separation is handled with local light each via frequency mixer and balanced detector.
The present invention is without using the polarization regulation and control device such as polarization beam apparatus, polarization rotator so that whole chip design is more
To be simple, while also avoid waveguide intersection, be conducive to reducing added losses and simplify phase controlling etc.；Due to humorous using micro-loop
The chamber that shakes is designed, and simple in construction, wavelength channel number is easy to expand.
Brief description of the drawings
Fig. 1 is embodiments of the invention schematic diagram.
Fig. 2 is the fundamental diagram of the present invention.
In figure：1st, the first input waveguide, the 2, second input waveguide.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, the present invention, which includes the first input waveguide 1, the second input waveguide 2 and multiple wavelength channels, receives single
Member；First input waveguide 1 and the second input waveguide 2 are arranged in parallel, along ripple between the first input waveguide 1 and the second input waveguide 2
Lead direction interval and be sequentially provided with multiple wavelength channel receiving units；Each wavelength channel receiving unit is included along the first input waveguide
TE polarization wavelength channel reception groups and TM polarization wavelength channel reception groups that 1 direction is sequentially arranged；First input waveguide 1 and second
Input waveguide 2 is inputted respectively flashlight and local light, successively through signal of each wavelength channel receiving unit to different wave length
Light is downloaded reception.
TE polarization wavelength channel reception groups include two slotting 90 ° that divide (Add-Drop) type micro-ring resonant cavities, TE to polarize and mixed
Clutch and photoelectricity balance detector array, two slotting parting micro-ring resonant cavities are located at the first input waveguide 1 and the second input respectively
Inner side between waveguide 2, and coupled respectively with the first input waveguide 1 and the second input waveguide 2, two slotting parting micro-ring resonant cavities
Between provided with two single modes connection waveguides arranged in parallel, two single modes connection waveguides are parallel with the first input waveguide 1, two lists
Mould connection waveguide is input in 90 ° of blenders of TE polarizations, 90 ° of blender output ends connection photoelectricity balanced detector of TE polarizations
Array switching is electric signal, and photoelectricity balance detector array is connected to digital information processing system.
The slotting parting micro-ring resonant cavity of two TE polarizations to TE polarization signals light and local light-receiving and is filtered respectively, is filtered
Flashlight and local light afterwards is sent in 90 ° of blenders of TE polarizations by the connection waveguide of respective single mode and is demodulated respectively,
Electric signal is formed after most carrying out opto-electronic conversion through light level weighing apparatus detector array afterwards, finally by digital information processing system by mould
Distortion and damage of the number conversion to signal carry out processing recovering signal.
TM polarization wavelength channel reception groups include 90 ° of mixing of the slotting parting micro-ring resonant cavity of two TM polarizations, TM polarizations
Device and photoelectricity balance detector array, the slotting parting micro-ring resonant cavity of two TM polarization are located at the first input waveguide 1 and the respectively
Inner side between two input waveguides 2, and coupled respectively with the first input waveguide 1 and the second input waveguide 2, what two TM were polarized inserts
Provided with two single mode connection waveguides arranged in parallel, two single mode connection waveguides and the first incoming wave between parting micro-ring resonant cavity
Lead 1 parallel, two single modes connection waveguides are input in 90 ° of blenders of TM polarizations, 90 ° of blender output ends connection of TM polarizations
Electric signal is converted into photoelectricity balance detector array, photoelectricity balance detector array is connected to digital information processing system.
Two slotting parting micro-ring resonant cavities to TM polarization signals light and local light-receiving and are filtered respectively, filtered signal
Light and local light are sent in 90 ° of blenders of TM polarizations by the connection waveguide of respective single mode are demodulated respectively, then through light
Electric equilibrium detector array carries out opto-electronic conversion, finally by digital information processing system by analog-to-digital conversion to the distortion of signal and
Damage carries out processing recovering signal.
First input waveguide 1 and the second input waveguide 2 are single mode waveguide.First input waveguide 1 is used to realize that TE, TM are inclined
The different wave length flashlight input shaken.Second input waveguide 2 is used for the local light input of different wave length for realizing TE, TM polarization.
The slotting parting micro-ring resonant cavity that the present invention is used, each own separation layer in top and metal electrode.Added by regulation
The resonance wavelength that the voltage on electrode can adjust micro-ring resonant cavity is carried, the band logical filter of the flashlight and local light of different wave length is realized
Wave energy.
Each micro-ring resonant cavity, 90 ° of blenders, photo-detectors are connected by single mode planar fiber waveguide in receiving unit of the present invention
Connect.
Preferably, two micro-ring resonant cavities of same palarization multiplexing are realized in each receiving unit, and there is identical structure to set
Meter, i.e., resonator length, duct width, the coefficient of coup each between the first input waveguide 1 or the second input waveguide 2 are homogeneous
Together.Two micro-ring resonant cavities realize the wavelength X of a certain polarization (TE or TM) respectivelynFlashlight and local light filtering.Each
TE or TM polarizes 90 ° of blender output ends and is respectively connected with photoelectricity balanced detector and digital information processing system.
As shown in figure 1, the present invention include two input waveguides and N number of wavelength channel receiving unit (n=1,2,3,4 ...,
N), multiple wavelength channel (λ of the input TE and TM of single mode waveguide 1 polarizations1~λN) flashlight, single mode waveguide 2 input TE and TM it is inclined
Multi-wavelength passage (the λ shaken1~λN) local light, its operation principle is as follows：
As shown in figure 1, wherein first wave length λ1Channel reception unit：Wavelength is λ1TE, TM polarization signal light via single mode
Waveguide is inputted, and the wavelength X of TE polarizations is realized by micro-ring resonant cavity 111Filtering, by micro-ring resonant cavity 12 realize TM polarization ripple
Long λ1Filtering so that wavelength is λ1TE, TM polarization signal light pass through respectively from corresponding micro-ring resonant cavity download port and respectively
Waveguide o11 is connected by single mode and single mode connects waveguide o12 download transmissions into respective TE, TM 90 ° of blenders of polarization；It is similar
, TE, TM polarize local light and inputted via single mode waveguide, and the wavelength X of TE polarizations is realized by micro-ring resonant cavity 131Filtering, by
Micro-ring resonant cavity 14 realizes the wavelength X of TM polarizations1Filtering so that wavelength is λ1TE, TM polarization signal light respectively from corresponding micro-
Annular resonant cavity download port simultaneously connects waveguide o13 and single mode connection waveguide o14 download transmissions to respective TE via single mode respectively
Polarization, TM are polarized in 90 ° of blenders.
As shown in figure 1, wherein the n-th wavelength XnChannel reception unit：Wavelength is λnTE, TM polarization signal light via single mode
Waveguide is inputted, and the wavelength X of TE polarizations is realized by micro-ring resonant cavity n1nFiltering, by micro-ring resonant cavity n2 realize TM polarization ripple
Long λnFiltering so that wavelength is λnTE, TM polarization signal light pass through respectively from corresponding micro-ring resonant cavity download port and respectively
Waveguide on1 is connected by single mode and single mode connects waveguide on2 download transmissions into respective TE, TM 90 ° of blenders of polarization；It is similar
, TE, TM polarize local light and inputted via single mode waveguide, and the wavelength X of TE polarizations is realized by micro-ring resonant cavity n3nFiltering, by
Micro-ring resonant cavity n4 realizes the wavelength X of TM polarizationsnFiltering so that wavelength is λnTE, TM polarization signal light respectively from corresponding micro-
Annular resonant cavity download port simultaneously connects waveguide on3 and single mode via single mode respectively and connects waveguide on4 download transmissions to respective
TE, TM are polarized in 90 ° of blenders.
Wherein in n-th of receiving unit：
The n-th 1 slotting parting micro-ring resonant cavities are mutually close with flashlight input waveguide 1, occur evanescent wave coupling.Micro-ring resonant
Chamber radius is Rn, TE is polarized into wavelength XnSignal optically coupling in micro-ring resonant cavity, through being coupled positioned at micro-ring resonant cavity opposite side
The single mode waveguide on1 coupling outputs in area, and it is connected to the input port of 90 ° of blenders of TE polarizations.
The n-th 2 slotting parting micro-ring resonant cavities are mutually close with flashlight input waveguide 1, occur evanescent wave coupling.Micro-ring resonant
Chamber radius is Rn', TM is polarized into wavelength XnSignal optically coupling in micro-ring resonant cavity, through positioned at micro-ring resonant cavity opposite side coupling
The single mode waveguide on2 coupling outputs in area are closed, and are connected to the input port of 90 ° of blenders of TM polarizations.
The n-th 3 slotting parting micro-ring resonant cavities are mutually close with local light input waveguide 2, occur evanescent wave coupling.Micro-ring resonant
Chamber radius is Rn, TE is polarized into wavelength XnIt is local optically coupling in micro-ring resonant cavity, through being coupled positioned at micro-ring resonant cavity opposite side
The single mode waveguide on3 coupling outputs in area, and it is connected to the input port of 90 ° of blenders of TE polarization work.
The n-th 4 slotting parting micro-ring resonant cavities are mutually close with local light input waveguide 2, occur evanescent wave coupling.Micro-ring resonant
Chamber radius is Rn', TM is polarized into wavelength XnIt is local optically coupling in micro-ring resonant cavity, through positioned at micro-ring resonant cavity opposite side coupling
The single mode waveguide on4 coupling outputs in area are closed, and are connected to the input port of 90 ° of blenders of TM polarization work.
As shown in Fig. 2 in each receiving unit the free spectral range of each micro-ring resonant cavity need be more than number of channels and
The product of adjacency channel wavelength interval.Therefore, micro-ring resonant cavity or the cascade of bending radius smaller (such as~3 μm) can be used
The mode of micro-ring resonant cavity.In order to reduce polarization interference, micro-ring resonant cavity should have larger birefringence effect so that micro-loop is humorous
The chamber that shakes has larger polarization dependent wavelength (resonance wavelength of the polarization of PD λ, i.e., two is separated by).Its PD λ should be greater than number of channels
With the product of the wavelength interval of adjacency channel, it is ensured that all passages are not influenceed by other passage adjacent level time resonance wavelengths.It is micro-
The width of annular resonant cavity should be determined by required birefringence size.In order to which the spectral response curve of TE, TM polarization is roughly the same,
TE, TM polarization resonator should be roughly the same with the coefficient of coup of input waveguide, are the micro-ring resonant cavity coupled zone of this TE, TM polarization
Different waveguide spacing should be chosen.It is humorous that each micro-loop can be tuned on micro-ring resonant cavity by adjusting the voltage on metal electrode
Shake the resonance wavelength of chamber, be allowed to be aligned with desired value.
The specific embodiment of the present invention is given below, is mainly illustrated by taking n-th of receiving unit as an example：
The single mode waveguide 1 of the n-th 1 micro-ring resonant cavities and input signal light is mutually close to occurring evanescent wave coupling, micro-ring resonant cavity
For single mode waveguide, radius is Rn, the resonance wavelength of micro-ring resonant cavity is λn, the wavelength of TE polarizations is λnOptically coupling to n1 micro-loops
In resonator.By being coupled to single mode waveguide on1 in micro-ring resonant cavity opposite side after micro-ring resonant cavity resonance, and it is inclined to be input to TE
The input port of the 90 ° of hybrid multiplex devices shaken.Wherein single mode waveguide on1 is parallel with input waveguide 1 to be placed.
The single mode waveguide 2 of the n-th 2 micro-ring resonant cavities and the local light of input is mutually close to occurring evanescent wave coupling, micro-ring resonant cavity
For single mode waveguide, radius is Rn, the resonance wavelength of micro-ring resonant cavity is λn, the wavelength of TE polarizations is λnOptically coupling to n2 micro-loops
In resonator.By being coupled to single mode waveguide on2 in micro-ring resonant cavity opposite side after micro-ring resonant cavity resonance, and it is inclined to be input to TE
The input port of the 90 ° of hybrid multiplex devices shaken.Wherein single mode waveguide on2 is parallel with input waveguide 2 to be placed.
The single mode waveguide 1 of the n-th 3 micro-ring resonant cavities and input signal light is mutually close to occurring evanescent wave coupling, micro-ring resonant cavity
For single mode waveguide, radius is Rn', the resonance wavelength of micro-ring resonant cavity is λn, the wavelength of TM polarizations is λnIt is micro- optically coupling to on3
In annular resonant cavity.By being coupled to single mode waveguide on3 in micro-ring resonant cavity opposite side after micro-ring resonant cavity resonance, and it is input to TM
Polarize the input port of 90 ° of hybrid multiplex devices of work.Wherein single mode waveguide on3 is parallel with input waveguide 1 to be placed.
The single mode waveguide 2 of the n-th 4 micro-ring resonant cavities and the local light of input is mutually close to occurring evanescent wave coupling, micro-ring resonant cavity
For single mode waveguide, radius is Rn', the resonance wavelength of micro-ring resonant cavity is λn', the wavelength of TM polarizations is λn' it is micro- optically coupling to n4
In annular resonant cavity.By being coupled to single mode waveguide 4n in micro-ring resonant cavity opposite side after micro-ring resonant cavity resonance, and it is input to TM
Polarize the input port of 90 ° of hybrid multiplex devices of work.Wherein single mode waveguide 4n is parallel with input waveguide 2 to be placed.
Micro-ring resonant cavity n1 and n3 bending radius, duct width are identical in n-th of receiving unit, and micro-ring resonant cavity n1 is same
The coefficient of coup of single mode waveguide 1 is roughly the same with the coefficient of coup between single mode waveguide 2 with micro-ring resonant cavity n3, micro-ring resonant cavity n1
Realize that the wavelength of TE polarizations is λ respectively with micro-ring resonant cavity n3nFlashlight and local light filtering.
Micro-ring resonant cavity n2 and n4 bending radius, duct width are identical in n-th of receiving unit, and micro-ring resonant cavity n2 is same
The coefficient of coup of single mode waveguide 1 is roughly the same with the coefficient of coup between single mode waveguide 2 with micro-ring resonant cavity n4, micro-ring resonant cavity n2
Realize the filtering of TM polarization wavelength Xs n flashlight and local light respectively with micro-ring resonant cavity n4.
As can be seen here, the present invention using combine the micro-ring resonant cavity array with different resonance wavelengths wavelength selection and
Polarization selection, device is regulated and controled without using polarization, chip design is simple, it is to avoid waveguide intersection, and wavelength channel number is easy to expand, tool
There is prominent significant technique effect.
Claims (12)
1. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type, it is characterised in that：Including
One input waveguide (1), the second input waveguide (2) and multiple wavelength channel receiving units；First input waveguide (1) and the second input
Waveguide (2) is arranged in parallel, is sequentially provided between the first input waveguide (1) and the second input waveguide (2) along wave guide direction interval many
Individual wavelength channel receiving unit；Each wavelength channel receiving unit includes the TE being sequentially arranged along the first input waveguide (1) direction
Polarize wavelength channel reception group and TM polarization wavelength channel reception groups；First input waveguide (1) and the second input waveguide (2) are respectively
Flashlight and local light of the input with multiple wavelength channels, TE is polarized respectively through each wavelength channel receiving unit successively,
The flashlight and local light of the different wave length of TM polarizations are downloaded reception.
2. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 1, its
It is characterised by：Described TE polarization wavelength channel reception groups include the slotting parting micro-ring resonant cavity of two TE polarizations, TE and polarized
90 ° of blenders and photoelectricity balance detector array, the slotting parting micro-ring resonant cavity of two TE polarizations are located at the first incoming wave respectively
Lead the inner side between (1) and the second input waveguide (2), and respectively with the first input waveguide (1) and the second input waveguide (2) coupling
Close, provided with two single mode connection waveguides arranged in parallel between the slotting parting micro-ring resonant cavity of two TE polarizations, two single modes connect
Connect that waveguide is parallel with the first input waveguide (1), two single modes connection waveguides are input in 90 ° of blenders of TE polarizations, TE polarizations
90 ° of blender output ends be connected to photoelectricity balance detector array be converted into electric signal.
3. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 2, its
It is characterised by：The slotting parting micro-ring resonant cavity of described two TE polarizations to TE polarization signals light and local light-receiving and is filtered respectively
Ripple, filtered flashlight and local light connect waveguide by respective single mode respectively and are sent in 90 ° of blenders of TE polarizations
Row demodulation, electric signal is formed after most carrying out opto-electronic conversion through light level weighing apparatus detector array afterwards.
4. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 1, its
It is characterised by：Described TM polarization wavelength channel reception groups include the slotting parting micro-ring resonant cavity of two TM polarizations, TM and polarized
90 ° of blenders and photoelectricity balance detector array, the slotting parting micro-ring resonant cavity of two TM polarizations are located at the first incoming wave respectively
Lead the inner side between (1) and the second input waveguide (2), and respectively with the first input waveguide (1) and the second input waveguide (2) coupling
Close, provided with two single mode connection waveguides arranged in parallel between the slotting parting micro-ring resonant cavity of two TM polarizations, two single modes connect
Connect that waveguide is parallel with the first input waveguide (1), two single modes connection waveguides are input in 90 ° of blenders of TM polarizations, TM polarizations
90 ° of blender output ends be connected to photoelectricity balance detector array be converted into electric signal.
5. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 4, its
It is characterised by：The slotting parting micro-ring resonant cavity of described two TM polarizations to TM polarization signals light and local light-receiving and is filtered respectively
Ripple, filtered flashlight and local light connect waveguide by respective single mode respectively and are sent in 90 ° of blenders of TM polarizations
Row demodulation, electric signal is formed after most carrying out opto-electronic conversion through light level weighing apparatus detector array afterwards.
6. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 1, its
It is characterised by：Described the first input waveguide (1) and the second input waveguide (2) is single mode waveguide, is respectively used to input different
The flashlight of polarization and local light.
7. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 2 or 4,
It is characterized in that：Separation layer and metal electrode are covered with described slotting parting micro-ring resonant cavity, by adjusting on loading electrode
Voltage tune the operation wavelength of micro-ring resonant cavity.
8. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 2, its
It is characterised by：The slotting parting micro-ring resonant cavity of described two TE polarizations has identical resonance wavelength, and each wavelength channel connects
Receive and insert the resonance wavelength of parting micro-ring resonant cavity in unit to fix channel spacing Δ λchEqual-difference arrangement.
9. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 4, its
It is characterised by：The slotting parting micro-ring resonant cavity of described two TM polarizations has identical resonance wavelength, and each wavelength channel connects
Receive and insert the resonance wavelength of parting micro-ring resonant cavity in unit to fix channel spacing Δ λchEqual-difference arrangement.
10. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 2, its
It is characterised by：Described two TE polarizations insert parting micro-ring resonant cavity and input single mode ripple with the first input waveguide (1), second respectively
The coefficient of coup led between (2) is identical.
11. a kind of coherent detection receiver of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 4, its
It is characterised by：The slotting parting micro-ring resonant cavity of described two TM polarizations inputs single mode with the first input waveguide (1), second respectively
The coefficient of coup between waveguide (2) is identical.
12. a kind of coherent detection of the dual-polarization multi-wavelength of micro-ring resonant cavity resonator type described in as requested 2 or 4 is received
Device, it is characterised in that：90 ° of described blenders are 2 × 4 passage multiple-mode interfence types, 2 × 4 passages are star-like, with delay line
The combination of multimode interference or star pattern with delay line etc..
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| CN114866155B (en) * | 2021-02-03 | 2024-01-05 | 华为技术有限公司 | Wave split phase dry receiving device, data receiving method and receiving and transmitting system |
| CN113783653B (en) * | 2021-08-19 | 2022-07-08 | 中国科学院西安光学精密机械研究所 | Wavelength division multiplexing optical receiver system based on micro-ring resonator |
| CN114838744A (en) * | 2022-04-27 | 2022-08-02 | 东南大学 | Optical fiber Bragg grating spectrum demodulation chip based on micro-ring |
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| WO2014147821A1 (en) * | 2013-03-22 | 2014-09-25 | 富士通株式会社 | Wavelength-division multiplexing optical receiver |
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