CN2543286Y - Wave division multiplexer/demultiplexer based on array waveguide interferometer - Google Patents
Wave division multiplexer/demultiplexer based on array waveguide interferometer Download PDFInfo
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- CN2543286Y CN2543286Y CN02229436U CN02229436U CN2543286Y CN 2543286 Y CN2543286 Y CN 2543286Y CN 02229436 U CN02229436 U CN 02229436U CN 02229436 U CN02229436 U CN 02229436U CN 2543286 Y CN2543286 Y CN 2543286Y
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- waveguide
- division multiplexer
- waveguide array
- interferometer
- wave division
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Abstract
The utility model discloses a wave division multiplexer/demultiplexer based on an array waveguide interferometer, which is characterized in that the wave division multiplexer/demultiplexer consists of array waveguide interferometers A#-[1], A#-[2], ... , A#-[N]. The array waveguide interferometers share an input light waveguide or an output light waveguide. The wave division multiplexer/demultiplexer of the utility model has a high wavelength resolution because of conducting synthesizing and separating of light waves with different wavelengths by the array waveguide interferometers, and has a modularized structure, which can realize a multichannel wave division multiplexing/demultiplexing and is prepared by an optical integrated technology with a better compatibility with optical fibers.
Description
Technical field
The utility model relates to a kind of Wavelength division multiplexer/demultiplexer based on Waveguide array interferometer, is applicable to fields such as light is integrated, optical-fiber network, light detection, is particularly useful for the optical communication field.
Background technology
Optical wavelength-division multiplex/demodulation multiplexer is mainly used in the synthetic of optical wavelength in the optical-fibre communications light path and separates.Optical wavelength-division multiplex/demodulation multiplexer mainly contains the multilayer optical film filter that utilizes the interference of light effect at present, it comprises band pass filter, cut-off type filter and notch filter etc., and wherein super narrowband optical film filter requires very high to the preparation technology of film; Adopt welding to draw the mode coupling type full optical fiber optical optical Wavelength division multiplexer/demultiplexer of awl method preparation in addition, its advantage is to make simply, and the insertion loss is low, but multiplexing interval is bigger; Utilize conventional prism in addition, optical wavelength-division multiplex/demodulation multiplexer that the branch light action of chromatic dispersion elements such as grating is made, and Fiber Bragg Grating FBG (FBG) and array waveguide grating (AWG), wherein adopt conventional prism, during grating and optical fiber compatible bad, and fiber grating is a kind of all-fiber filter, it is by carrying out periodic modulation to the fiber core refractive index, making it satisfy Bragg condition reflects, reflectivity can reach 100%, but it is a kind of notch filter, reflected light signal is opposite with former transmission direction, array waveguide grating adopts the making tens of light integrated approach to constitute grating to the Waveguide array that the hundreds of bar has certain optical path difference in addition, but it is parallel-connection structure, be that each interchannel is not separate, along with the number of channel increases, manufacture difficulty increases rapidly like this.
Summary of the invention
The purpose of this utility model is to provide a kind of Wavelength division multiplexer/demultiplexer based on Waveguide array interferometer, this Wavelength division multiplexer/demultiplexer wavelength resolution height, and channel spacing is narrow, and channel number is big, and is good with the optical fiber compatibility.
For achieving the above object, the utility model adopts Waveguide array interferometer to carry out the synthetic of optical wavelength and separate.Waveguide array interferometer is the integrated interferometer of a kind of novel light.Single Waveguide array interferometer can be regarded a light integration module with four ports as, and one of them port can be used as input port, and the light wave with certain wavelength is respectively from other three port outputs.If output wavelength output optical waveguide different, that belong to a plurality of Waveguide array interferometers respectively is integrated on the same output waveguide, can realizes wavelength division multiplexing.If the input light wave is delivered to a plurality of Waveguide array interferometers, select the light wave of exporting certain wavelength by each Waveguide array interferometer, can realize the wavelength-division demultiplexing.Because the output characteristic of each Waveguide array interferometer only depends on its internal optics structure, uncorrelated each other, therefore adopt the Wavelength division multiplexer/demultiplexer spare of Waveguide array interferometer to have modular construction, promptly increase or reduce a passage, only need to increase or reduce a Waveguide array interferometer.Each Waveguide array interferometer can pass through the integrated thousands of one optical waveguides of light integrated technology simultaneously, therefore has very high wavelength resolution, can realize super narrow channel spacing.Adopt fiber waveguide in addition, device and optical fiber have compatible preferably.
The utility model compared with prior art has the following advantages and effect:
At first, therefore have very high wavelength resolution, can realize super narrow channel spacing owing to adopt Waveguide array interferometer to carry out the synthetic of different wave length light wave and separate.Secondly it has modular organization, promptly increase or reduce a channel, only needing increases or reduces by a Waveguide array interferometer, so the increase of channel only causes the increase of device area, can not cause other difficulties in the making, can realize very multi channel wavelength division multiplexing and demultiplexing.It adopts the integrated light guide technology in addition, and device and optical fiber have compatible preferably.
Description of drawings
Fig. 1 is the fundamental diagram of Waveguide array interferometer.
Fig. 2 is based on the structural representation of the wavelength division multiplexer of Waveguide array interferometer.
Fig. 3 is based on the structural representation of the Wave decomposing multiplexer of Waveguide array interferometer.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
According to Fig. 1 as can be known, Waveguide array interferometer is by input waveguide G
In, output optical waveguide G
OutWith array fiber waveguide G
1, G
2, G
3... G
N-1, G
NForm.Light wave λ
1, λ
2... λ
NBy input waveguide G
InInput port P
1Input is through array fiber waveguide G
1, G
2, G
3... G
N-1, G
NBe coupled to output optical waveguide G
Out, because light wave is through different optical waveguide coupled to output optical waveguide G in the array fiber waveguide
OutThe time, there is optical path difference each other, have only λ like this
i, λ
jSatisfy respectively and interfere maximum condition, respectively from output port P
2With output port P
3Output, remaining light wave is from output port P
4Output.Because single Waveguide array interferometer can integrated thousands of one optical waveguide G
1, G
2, G
3... G
N-1, G
N, therefore can realize very high wavelength resolution.
According to Fig. 2 as can be known, based on the wavelength division multiplexer of Waveguide array interferometer, it is characterized in that by Waveguide array interferometer A
1, A
2..., A
NForm, and these Waveguide array interferometers A
1, A
2..., A
NShared output optical waveguide O
0Light wave λ
1i/ λ
1j, λ
2i/ λ
2j..., λ
Ni/ λ
NjRespectively by Waveguide array interferometer A
1, A
2..., A
NInput waveguide be coupled out output optical waveguide O
0Thereby, realize a plurality of wavelength X
1i, λ
2i..., λ
Ni/ λ
1j, λ
2j..., λ
NjMultiplexing.
According to Fig. 3 as can be known, based on the Wave decomposing multiplexer of Waveguide array interferometer, it is characterized in that by Waveguide array interferometer A
1, A
2..., A
NForm, and these Waveguide array interferometers A
1, A
2..., A
NShared input waveguide O
1Input light wave λ
1i, λ
1j, λ
2i, λ
2j..., λ
Ni, λ
NjRespectively by Waveguide array interferometer A
1, A
2..., A
NOutput port output separately, thus realize a plurality of wavelength X
1i, λ
1j, λ
2i, λ
2j..., λ
Ni, λ
NjDemultiplexing.
Complex chart 2 and Fig. 3 based on the Wavelength division multiplexer/demultiplexer of Waveguide array interferometer, is characterized in that Waveguide array interferometer A as can be known
1, A
2..., A
NMode according to shared output optical waveguide or input waveguide is together in series, and realizes the multiplexing or demultiplexing of wavelength.
Claims (3)
1. the Wavelength division multiplexer/demultiplexer based on Waveguide array interferometer is characterized in that Waveguide array interferometer (A
1), (A
2), (A
N) be together in series according to the mode of shared output optical waveguide or input waveguide, realize the multiplexing or demultiplexing of wavelength.
2. a kind of wavelength division multiplexer based on Waveguide array interferometer according to claim 1 is characterized in that by Waveguide array interferometer (A
1), (A
2), (A
N) form Waveguide array interferometer (A
1), (A
2), (A
N) shared output optical waveguide (O
0).
3. a kind of Wave decomposing multiplexer based on Waveguide array interferometer according to claim 1 is characterized in that Waveguide array interferometer (A
1), (A
2), (A
N) shared input waveguide (O
1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02229436U CN2543286Y (en) | 2002-05-17 | 2002-05-17 | Wave division multiplexer/demultiplexer based on array waveguide interferometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02229436U CN2543286Y (en) | 2002-05-17 | 2002-05-17 | Wave division multiplexer/demultiplexer based on array waveguide interferometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2543286Y true CN2543286Y (en) | 2003-04-02 |
Family
ID=33705747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02229436U Expired - Fee Related CN2543286Y (en) | 2002-05-17 | 2002-05-17 | Wave division multiplexer/demultiplexer based on array waveguide interferometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2543286Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427983C (en) * | 2006-12-31 | 2008-10-22 | 北京交通大学 | Combiner and demultiplexer synthesized by micro-insertion-loss strong-coupling fiber grating group and its manufacturing method |
-
2002
- 2002-05-17 CN CN02229436U patent/CN2543286Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427983C (en) * | 2006-12-31 | 2008-10-22 | 北京交通大学 | Combiner and demultiplexer synthesized by micro-insertion-loss strong-coupling fiber grating group and its manufacturing method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |