CN205427236U - Plane single scale intergration wavelength devision multiplex - demultiplexer - Google Patents
Plane single scale intergration wavelength devision multiplex - demultiplexer Download PDFInfo
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- CN205427236U CN205427236U CN201520795461.2U CN201520795461U CN205427236U CN 205427236 U CN205427236 U CN 205427236U CN 201520795461 U CN201520795461 U CN 201520795461U CN 205427236 U CN205427236 U CN 205427236U
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Abstract
The utility model discloses a plane single scale intergration wavelength devision multiplex - demultiplexer, include: the chip, the one end of chip is provided with the optic fibre of 1 port and the fiber array of a N port, be provided with fiber waveguide short distance lens and a binary raster on the chip, realize the light path through the waveguide between the above -mentioned structure and connect, wherein, expanding and restrainting and focus on by the realization of waveguide short distance lens, the diffraction is realized by the binary raster. In this way, the utility model discloses it is simple reasonable, be used for the wavelength division multiplexer design with binary raster and waveguide short distance lens to realize that the device channel spacing is little, the loss is hanged down, it is little to crosstalk, the extension wavelength devision multiplex that the channel is easy, coupling efficiency is high, can form a succinct single scale intergration waveguide mode wavelength devision multiplex structure, do benefit to reduce cost and the technology degree of difficulty, the restriction of breaking batch production, the quick wavelength devision multiplex function of realization.
Description
Technical field
This utility model relates to technical field of photo communication and integrated opto-electronic technical field, particularly relates to a kind of integrated wavelength-division multiplex-demultiplexer of planar monolithic.
Background technology
Since nineteen nineties, wavelength-division multiplex becomes the major way of dilatation, wavelength-division multiplex technique becomes the mainstream technology of high-capacity and high-speed optic communication, and wavelength division multiplexer is as its core devices, demand is day by day urgent, and becomes the ultra dense wavelength division multiple (UDWDM) of hundred channels to become prior development direction.
The wavelength division multiplexer of commercialization at present mainly has grating type optical fiber (FBG), dielectric interference Filter Type (TFF), melting cone type (FBT) and integrated type optical waveguide (IOW).Wherein, TFF type, FBT type structure and the limited significant discomfort of principle answer UDWDM to use, the undue temperature sensitivity of FBG type also makes it apply to be very limited, and IOW type wavelength division multiplexer is the planar waveguide-type device based on light integrated technology, there is all potential advantage of Planar waveguide technology, all as appropriate for batch production, reproducible, size is little, the light path of complexity can be realized during photomask, with optical fiber be directed at easily etc., thus represent the WDM device technology of a kind of advanced person, but its insertion loss, also there is a big difference with the channel spacing requirement away from UDWDM for the number of channel.
The defect existed for above-mentioned prior art or deficiency, the purpose of this utility model is, it is provided that a kind of integrated wavelength-division multiplex-demultiplexer of planar monolithic based on Geodesic Lens Yu binary raster and its implementation.
Utility model content
This utility model is mainly solving the technical problems that provide a kind of integrated wavelength-division multiplex-demultiplexer of planar monolithic, simple and reasonable, binary raster and Geodesic Lens are used for wavelength division multiplexer design, to realize the wavelength-division multiplex that device channel spacing is little, it is low to be lost, crosstalk is little, extended channel is easy, coupling efficiency is high.
For solving above-mentioned technical problem, the technical scheme that this utility model uses is: provide a kind of integrated wavelength-division multiplex-demultiplexer of planar monolithic, including: chip, one end of described chip is provided with optical fiber and the fiber array of N number of port of 1 port, it is provided with an Optical Waveguide Geodesic Lens and a binary raster on described chip, realizes light path by waveguide between said structure and connect.
In one preferred embodiment of this utility model, the optical fiber of described 1 port is input optical fibre, and the fiber array of described N number of port is output optical fibre array, it is achieved demultiplexing process.
In one preferred embodiment of this utility model, the optical fiber of described 1 port is output optical fibre, and the fiber array of described N number of port is input optical fibre array, it is achieved multiplex process.
This utility model additionally provides the implementation method of the integrated wavelength-division multiplex-demultiplexer of above-mentioned planar monolithic, including:
A: demultiplexer, the optical fiber of described 1 port is input optical fibre, and the fiber array of described N number of port is output optical fibre array, and demultiplexing realizes process and comprises the following steps:
A, expand: the multi-wavelength beam inputted by input optical fibre is expanded by Optical Waveguide Geodesic Lens, becomes the collimated light beam of wide aperture；
B, diffraction: the collimated light beam after expanding is reflected binary raster diffraction, the light of different wave length is diffracted into different directions；
C, focusing: the light of different directions is focused on the different port of the corresponding different wave length of output optical fibre array by Optical Waveguide Geodesic Lens；
B: multiplexer, the optical fiber of described 1 port is output optical fibre, and the fiber array of described N number of port is input optical fibre array, and multiplexing realizes process and comprises the following steps:
A, expand: the light beam inputted by N number of input optical fibre array either port is expanded by Optical Waveguide Geodesic Lens, becomes the collimated light beam along different directions outgoing；
B, diffraction: the collimated light beam expanding rear different directions (corresponding different wave length) is diffracted into different directions by reflecting binary raster；
C, focusing: the light of different directions is focused on same output optical fibre by Optical Waveguide Geodesic Lens.
In one preferred embodiment of this utility model, in the optical fiber of 1 port, transmission is N wavelength (wavelength-division multiplex) optical signal.
In one preferred embodiment of this utility model, incident wavelength-division-multiplexed optical signal according to the longest light of wavelength from input more close to principle shine N number of different outfan.
In one preferred embodiment of this utility model, cycle and the inclination angle of described binary raster are determined by centre wavelength and wavelength interval and light path, in accordance with diffraction law.
In one preferred embodiment of this utility model, transmit in obtaining output optical fibre in the input optical fibre during demultiplexing and multiplex process is N wavelength, the optical signal arranged according to wavelength-division multiplex principle.
The beneficial effects of the utility model are: based on binary raster diffraction wavelength wide ranges, Insertion Loss is low, spectral resolution is high, Insertion Loss is low, thus it is beneficial to bigger bandwidth, more filter with low insertion loss, more channels, more high-isolation partial wave realize, Geodesic Lens is ground to be especially advantageous for expanding and is improved with focusing performance simultaneously, binary raster and Geodesic Lens are used for wavelength division multiplexer design, to realize the wavelength-division multiplex that device channel spacing is little, it is low to be lost, crosstalk is little, extended channel is easy, coupling efficiency is high.
On the one hand there is the advantages such as binary optical device diffraction efficiency is the highest, resolution is high, on the other hand have Geodesic Lens can the advantages such as aplanasia and aberration, angular aperture be big, reflective gratings adds a geodesic lens and in turn ensure that the size of device is substantially reduced.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is that this utility model ripple demultiplexes functional realiey process schematic；
Fig. 2 is this utility model ripple multiplexing functional realiey process schematic；
Fig. 3 is the structural representation of a preferred embodiment of the present utility model；
Fig. 4 is the output spectrum scattergram of this utility model preferred embodiment.
Detailed description of the invention
Technical scheme in this utility model embodiment will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
See Fig. 1 ~ 2, from the multi-wavelength beam of input optical fibre input, want to realize wavelength-division multiplex function and expand, diffraction, focus on these steps.
Expand and realized by Geodesic Lens 3 with focusing on: the light beam of multi-wavelength from input optical fibre incident through slab guide 5 laggard enter Geodesic Lens thus expanded；Collimated light beam after diffraction is again introduced into Geodesic Lens after slab guide and is focused, and forms different outgoing luminous points, enters into the different port of output optical fibre array；
Diffraction is realized by binary raster 4, and incident multi-wavelength beam occurs diffraction after binary raster, and different light beams is diffracted into different directions, it then follows diffraction law.
Implementation method is based on grating dispersion principle, implementation employing Geodesic Lens light path is integrated with binary raster, the steps such as incident complex light process expands, diffraction, focusing, focus on different directions by the light of different wave length, and transmission is to corresponding output port.
This utility model, in the method realizing single-chip integration wavelength-division multiplex, expands and focuses on the Geodesic Lens realization that 'go'gage is big, aberration is little；The binary raster that diffraction is high by diffraction efficiency, resolution is high realizes.Determined cycle parameter and the inclination angle of binary raster by centre wavelength, wavelength interval and light path, then choose the Geodesic Lens of proper focal length, it is achieved OWDM function.
In Fig. 3, the optical fiber 1 of described 1 port is input optical fibre, the fiber array 2 of described N number of port is output optical fibre array, uses the device of the Geodesic Lens demultiplexing function integrated with binary raster of 1 port input, 8 ports outputs in specific embodiment, and binary raster employing is glittered binary raster.Selecting All Parameters: centre wavelength isMulti-wavelength beam incide planar optical waveguide from input optical fibre, waveguide material is, its ducting layer equivalent refractive index, refractive index of substrate, waveguide cover layer is air, enter pit radius afterwards, effective district radius, focal lengthGeodesic lens, be expanded as collimated light beam, afterwards by grating constantMicron, inclination angle isThe binary raster diffraction that glitters, the light of different wave length is diffracted into different directions, is finally focused on the different port of output optical fibre array by geodesic lens, its output spectrum be distributed as shown in Figure 4, it is achieved light wave demultiplexing function.
This utility model uses bigbore Geodesic Lens light path and binary raster diffracting mechanism, a succinct single-chip integration waveguide type WDM structure can be formed, be beneficial to reduce cost and technology difficulty, break the restriction of batch production, realize quick wavelength-division multiplex function.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (3)
1. the integrated wavelength-division multiplex-demultiplexer of planar monolithic, it is characterized in that, including: chip, one end of described chip is provided with optical fiber and the fiber array of N number of port of 1 port, it is provided with an Optical Waveguide Geodesic Lens and a binary raster on described chip, realizes light path by waveguide between the optical fiber of described 1 port, Optical Waveguide Geodesic Lens, binary raster and the fiber array of N number of port and connect；
During demultiplexing, light path order is: the fiber array of optical fiber → Optical Waveguide Geodesic Lens → binary raster → Optical Waveguide Geodesic Lens → N number of port of 1 port；
In multiplex process, light path order is: the optical fiber of fiber array → Optical Waveguide Geodesic Lens → binary raster → Optical Waveguide Geodesic Lens → 1 port of N number of port.
Integrated wavelength-division multiplex-the demultiplexer of planar monolithic the most according to claim 1, it is characterised in that the optical fiber of described 1 port is input optical fibre, the fiber array of described N number of port is output optical fibre array, it is achieved demultiplexing process.
Integrated wavelength-division multiplex-the demultiplexer of planar monolithic the most according to claim 1, it is characterised in that the optical fiber of described 1 port is output optical fibre, the fiber array of described N number of port is input optical fibre array, it is achieved multiplex process.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549024A (en) * | 2016-10-27 | 2017-03-29 | 中山大学 | A kind of traveling wave photodetector of integrated coupling polarization manipulation |
| CN106646784A (en) * | 2017-02-20 | 2017-05-10 | 众瑞速联（武汉）科技有限公司 | Wavelength division multiplexing light emission device based on array waveguide grating |
| CN108957776A (en) * | 2018-07-31 | 2018-12-07 | 北京无线电计量测试研究所 | A kind of ion microwave clock light path device and adjusting method |
| CN109709643A (en) * | 2019-01-24 | 2019-05-03 | 浙江大学 | One kind being based on single chip integrated dual-polarization mode multiplexing-demultiplexing chip |
| CN111708175A (en) * | 2020-06-29 | 2020-09-25 | 国科光芯(海宁)科技股份有限公司 | Structured light projection device |
-
2015
- 2015-10-15 CN CN201520795461.2U patent/CN205427236U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549024A (en) * | 2016-10-27 | 2017-03-29 | 中山大学 | A kind of traveling wave photodetector of integrated coupling polarization manipulation |
| CN106646784A (en) * | 2017-02-20 | 2017-05-10 | 众瑞速联（武汉）科技有限公司 | Wavelength division multiplexing light emission device based on array waveguide grating |
| CN108957776A (en) * | 2018-07-31 | 2018-12-07 | 北京无线电计量测试研究所 | A kind of ion microwave clock light path device and adjusting method |
| CN108957776B (en) * | 2018-07-31 | 2020-08-18 | 北京无线电计量测试研究所 | Optical path device for ion microwave clock and adjusting method |
| CN109709643A (en) * | 2019-01-24 | 2019-05-03 | 浙江大学 | One kind being based on single chip integrated dual-polarization mode multiplexing-demultiplexing chip |
| CN111708175A (en) * | 2020-06-29 | 2020-09-25 | 国科光芯(海宁)科技股份有限公司 | Structured light projection device |
| WO2022000925A1 (en) * | 2020-06-29 | 2022-01-06 | 国科光芯(海宁)科技股份有限公司 | Structured light projection device |
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Granted publication date: 20160803 Termination date: 20201015 |