CN208721830U - A kind of optical package for realizing DEMUX function in WDM - Google Patents
A kind of optical package for realizing DEMUX function in WDM Download PDFInfo
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- CN208721830U CN208721830U CN201821491711.3U CN201821491711U CN208721830U CN 208721830 U CN208721830 U CN 208721830U CN 201821491711 U CN201821491711 U CN 201821491711U CN 208721830 U CN208721830 U CN 208721830U
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Abstract
The utility model discloses a kind of in WDM realizes the optical package of DEMUX function, it includes prism, the prism has the first side and second side being parallel to each other, broadband anti-reflection film and broadband high-reflection film are sequentially equipped in the first side, multiple optical filters are sequentially equipped in the second side, each optical filter is used to transmit the light of different wave length, multiplexed optical containing multichannel enters inside prism from broadband anti-reflection film, during multiplexed optical is turned back between each optical filter and broadband high-reflection film, the light in each channel sequentially goes out from corresponding filter transmission in multiplexed optical.The advantages that light splitting application in 8 channels, the even more channels in 16 channels may be implemented in the utility model, compared with current AWG scheme, has Insertion Loss small, and with roomy, temperature drift is small, at low cost, expansible, commercial prospect is wide.
Description
Technical field
The utility model relates to communication optics field more particularly to a kind of optical combinations that DEMUX function is realized in WDM
Part.
Background technique
WDM is the technology of extensive utilization in optic communication, and DEMUX is essential optical element in the art.At present
DEMUX mainly passes through AWG scheme and tradition Z-BLOCK scheme is realized, this patent is based on the latter, derives a kind of novel optical group
DEMUX function may be implemented in component, the sub-assembly, while having the characteristics that better than AWG and tradition Z-BLOCK.
Summary of the invention
In order to solve deficiency in the prior art, the purpose of this utility model is to provide one kind, and DEMUX is realized in WDM
The advantages that optical package of function, small with Insertion Loss, with roomy, temperature drift is small, at low cost, expansible.
To achieve the above object, the utility model uses following technical scheme:
A kind of optical package for realizing DEMUX function in WDM comprising prism, which, which has, is parallel to each other
First side and second side are sequentially equipped with broadband anti-reflection film and broadband high-reflection film, described second side in the first side
Sequentially it is equipped with multiple optical filters on face, each optical filter is used to transmit the light of different wave length, and the multiplexed optical containing multichannel is from broadband
Anti-reflection film enters inside prism, each in multiplexed optical during multiplexed optical is turned back between each optical filter and broadband high-reflection film
The light in channel sequentially goes out from corresponding filter transmission.
Further, each optical filter is adhesively fixed on the second side by glue-line, the refractive index and prism of mesoglea
Match.
Further, the prism is rhombic prism, and first side and second side are tapered plane.
A kind of optical package for realizing DEMUX function in WDM comprising prism, which, which has, is parallel to each other
First side and second side are sequentially equipped with broadband anti-reflection film and broadband high-reflection film, described second side in the first side
Sequentially be equipped with multiple filter membranous layers on face, each filter membranous layer is used to transmit the light of different wave length, the multiplexed optical containing multichannel from
Broadband anti-reflection film enters inside prism, during multiplexed optical is turned back between each optical filter and broadband high-reflection film, multiplexed optical
In the light in each channel sequentially transmitted from corresponding filter membranous layer.
Further, each filter membranous layer passes through mask technological forming.
Further, the prism is rhombic prism, and first side and second side are tapered plane.
The utility model is carrier using prism, makes a kind of combination by the way that several optical filters or filter membranous layer are arranged
Part, the sub-assembly can realize DEMUX function in WDM, and port number is related to the number of optical filter or filter membranous layer, can be with
The light splitting application for realizing 8 channels, the even more channels in 16 channels has Insertion Loss small compared with current AWG scheme, with roomy,
The advantages that temperature drift is small, at low cost, expansible, commercial prospect is wide.
Detailed description of the invention
The utility model is described in further details below in conjunction with the drawings and specific embodiments:
Fig. 1 is the schematic diagram of the utility model embodiment 1；
Fig. 2 is the schematic diagram of the utility model embodiment 2.
Specific embodiment
Embodiment 1, as shown in Figure 1, a kind of optical package for realizing DEMUX function in WDM of the utility model, packet
Prism 1 is included, which has the first side and second side being parallel to each other, and is sequentially equipped with broadband in the first side and increases
Permeable membrane 2 and broadband high-reflection film 3 are sequentially equipped with multiple optical filters 4 in the second side, and each optical filter 4 is for transmiting difference
The light of wavelength, the multiplexed optical containing multichannel enter inside prism 1 from broadband anti-reflection film 2, and multiplexed optical is in each optical filter 4 and broadband
During turning back between highly reflecting films 3, the light in each channel is sequentially transmitted from corresponding optical filter 4 in multiplexed optical.
Each optical filter 4 is adhesively fixed on the second side by glue-line, and refractive index and the prism 1 of mesoglea match.
Wherein, prism 1 is rhombic prism, and first side and second side are tapered plane.
The production method of 1 optical package of embodiment:
1, design & processes prism 1.Prism 1 is the carrier of entire sub-assembly, will be according to the demand in different channels in design
The size of (including number of channels, interchannel away from) design prism 1, thickness, angle.It is cold worked using optics by body in processing
Mode, the strict control depth of parallelism, thickness, angle.Finally carry out subregion plated film (broadband anti-reflection film 2+ broadband high-reflection film 3).
2, design & processes optical filter 4.Optical filter 4 is the core component being divided, using coating designs software, according to
The Demand Design optical filter 4 in different channels, designing points are the flat of plated film curve, the drift of central wavelength.In processing, filter
Mating plate 4 usually carries out plated film with a depth of parallelism and the good Wafer of face shape, then cuts, detection is selected, spare.
3, sub-assembly is assembled.The matching of selective refraction rate, the glue of good reliability, by above-mentioned prism 1 and each optical filter 4 into
Row fitting, attention control glue-line consistency during fitting, while bubble is avoided, the bad phenomenons such as dislocation.
1 working principle of embodiment: by taking 8 channels as an example, multiplexed optical (1271nm~1411nm, pitch=20nm) is wide from left side
Band 2 region of anti-reflection film enters groupware system, and multiplexed optical first gets to lowermost optical filter 4 in first optical filter 4(Fig. 1
Be first), first optical filter 4 is by the light transmission of channel 1(1271nm), the reflection of remaining light, these reflected lights using
Second optical filter 4 is entered after the reflection of 1 broadband high-reflection film 3 of prism, similarly, second optical filter 4 is by channel 2
The light transmission of (1291nm), the reflection of remaining light, and so on, after 8 optical filters 4, multiplexed optical is demultiplexed one by one
It comes, realizes the function of DEMUX.
Embodiment 2, as shown in Fig. 2, a kind of optical package for realizing DEMUX function in WDM of the utility model, packet
Prism 1 is included, which has the first side and second side being parallel to each other, and is sequentially equipped with broadband in the first side and increases
Permeable membrane 2 and broadband high-reflection film 3 are sequentially equipped with multiple filter membranous layers 4 in the second side, and each filter membranous layer 4 is for transmiting
The light of different wave length, the multiplexed optical containing multichannel enter inside prism 1 from broadband anti-reflection film 2, and multiplexed optical is in each 4 He of optical filter
During turning back between broadband high-reflection film 3, the light in each channel is sequentially transmitted from corresponding filter membranous layer 4 in multiplexed optical.
Each filter membranous layer 4 passes through mask technological forming.
Wherein, prism 1 is rhombic prism, and first side and second side are tapered plane.
The description of its function of embodiment 2 is essentially identical with utility model embodiment 1, and difference is that embodiment 1 is with optical filter 4
It is divided, embodiment 1 is then directly to be divided with the plated film of different zones, and the plated film of different zones utilizes mask
Technology is realized.
Claims (6)
1. a kind of optical package for realizing DEMUX function in WDM, it is characterised in that: it includes prism, which has phase
Mutually parallel first side and second side is sequentially equipped with broadband anti-reflection film and broadband high-reflection film, institute in the first side
It states and is sequentially equipped with multiple optical filters in second side, each optical filter is used to transmit the light of different wave length, the multiplexing containing multichannel
Light enters inside prism from broadband anti-reflection film, multiple during multiplexed optical is turned back between each optical filter and broadband high-reflection film
The light in each channel sequentially goes out from corresponding filter transmission in using up.
2. a kind of optical package for realizing DEMUX function in WDM according to claim 1, it is characterised in that: each filter
Mating plate is adhesively fixed on the second side by glue-line, and refractive index and the prism of mesoglea match.
3. a kind of optical package for realizing DEMUX function in WDM according to claim 1, it is characterised in that: described
Prism is rhombic prism, and first side and second side are tapered plane.
4. a kind of optical package for realizing DEMUX function in WDM, it is characterised in that: it includes prism, which has phase
Mutually parallel first side and second side is sequentially equipped with broadband anti-reflection film and broadband high-reflection film, institute in the first side
It states and is sequentially equipped with multiple filter membranous layers in second side, each filter membranous layer is used to transmit the light of different wave length, contains multichannel
Multiplexed optical enters inside prism from broadband anti-reflection film, the process that multiplexed optical is turned back between each optical filter and broadband high-reflection film
In, the light in each channel is sequentially transmitted from corresponding filter membranous layer in multiplexed optical.
5. a kind of optical package for realizing DEMUX function in WDM according to claim 4, it is characterised in that: each filter
Light film layer passes through mask technological forming.
6. a kind of optical package for realizing DEMUX function in WDM according to claim 4, it is characterised in that: described
Prism is rhombic prism, and first side and second side are tapered plane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810403467 | 2018-04-28 | ||
| CN2018104034679 | 2018-04-28 |
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| CN208721830U true CN208721830U (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821491711.3U Active CN208721830U (en) | 2018-04-28 | 2018-09-12 | A kind of optical package for realizing DEMUX function in WDM |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213824A (en) * | 2020-10-29 | 2021-01-12 | 苏州伽蓝致远电子科技股份有限公司 | Wavelength division assembly and preparation method thereof |
| CN112882158A (en) * | 2019-11-29 | 2021-06-01 | 福州高意光学有限公司 | Miniaturized optical assembly capable of realizing wavelength division multiplexing and demultiplexing functions |
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2018
- 2018-09-12 CN CN201821491711.3U patent/CN208721830U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882158A (en) * | 2019-11-29 | 2021-06-01 | 福州高意光学有限公司 | Miniaturized optical assembly capable of realizing wavelength division multiplexing and demultiplexing functions |
| CN112213824A (en) * | 2020-10-29 | 2021-01-12 | 苏州伽蓝致远电子科技股份有限公司 | Wavelength division assembly and preparation method thereof |
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