CN214201850U - Mini type low-loss LAN-WDM passive optical module - Google Patents
Mini type low-loss LAN-WDM passive optical module Download PDFInfo
- Publication number
- CN214201850U CN214201850U CN202022899253.0U CN202022899253U CN214201850U CN 214201850 U CN214201850 U CN 214201850U CN 202022899253 U CN202022899253 U CN 202022899253U CN 214201850 U CN214201850 U CN 214201850U
- Authority
- CN
- China
- Prior art keywords
- output
- optical
- lan
- collimator
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Optical Communication System (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model relates to a Mini type low loss LAN-WDM passive optical module, which comprises a substrate; the base plate is fixedly provided with a collimator assembly, a right-angle prism assembly, an optical filter assembly and a reflector; the collimator assembly comprises an input collimator and a plurality of output collimators; the input collimator and the plurality of output collimators are arranged parallel to each other; the right-angle prism assembly comprises an input right-angle prism and a plurality of output right-angle prisms; the output right-angle prisms are arranged in parallel with each other; the optical filter assembly comprises a plurality of optical filters; the plurality of optical filters correspond to the plurality of output right-angle prisms one by one; the plurality of optical filters are arranged in parallel with each other; the input right-angle prism is arranged, so that the input collimator and the output collimator can be arranged in parallel, the whole structure is compact, the size is small, and the occupied space is small; the arrangement of the output right-angle prism enables the output collimators to be arranged in a close and parallel mode, so that the whole structure is compact, the size is small, and the occupied space is small.
Description
Technical Field
The utility model relates to a passive optical module technical field, more specifically say, relate to a Mini type low-loss LAN-WDM passive optical module.
Background
LAN-WDM (wavelength division multiplexing) is a WDM (wavelength division multiplexing) technology whose basic principle is: the method comprises the steps of combining (multiplexing) multiple optical signals with different wavelengths at a sending end, coupling the optical signals to the same optical fiber on an optical cable line for transmission, separating (demultiplexing) the combined multiple optical signals at a receiving end, further processing, recovering the original signals, and sending the original signals to different terminals. The center frequency of LAN-WDM technology is defined by ITU-T G.694.1 as a frequency grid of 100GHz or more spacing, a channel spacing of 200GHz to 800GHz, a wavelength range of 1260nm to 1360nm between DWDM (dense wavelength division multiplexing) and CWDM (coarse wavelength multiplexing).
The LAN-WDM passive optical module is a commonly used demultiplexing device, the most common LAN-WDM passive optical module on the market at present is formed by winding and cascading a plurality of LAN-WDM optical devices in a three-port form, the plurality of LAN-WDM optical devices respectively have selective passing effects on a plurality of optical signals of different wavelengths, when a plurality of optical signals of different wavelengths pass through a first LAN-WDM optical device, an optical signal having a specific wavelength corresponding to the LAN-WDM optical device is allowed to pass through the LAN-WDM optical device, to be output through an output terminal of the LAN-WDM optical device, the rest of the optical signals continue to the next LAN-WDM optical device, and when all LAN-WDM optical devices are traversed, the multiple optical signals are respectively output through the output ends of the LAN-WDM optical devices corresponding to the optical signals, so that demultiplexing is realized.
Referring to fig. 4, the most common structure of the LAN-WDM passive optical module on the market at present is shown, which is formed by winding and cascading 4 LAN-WDM optical devices 14, and the 4 LAN-WDM optical devices 14 respectively have λ wavelength1、λ2、λ3、λ4Has selective passing function, and the wavelengths are lambda respectively when the optical fiber is in work1、λ2、λ3、λ4Is input from a COM port and then sequentially passes through four LAN-WDM portsOptical devices 14 of respective wavelengths λ1、λ2、λ3、λ4The four optical signals are output from the output ports of the LAN-WDM optical device 14 corresponding thereto, respectively. It can be seen that although the structure of such a LAN-WDM passive optical module is simple, it is bulky and occupies a large space.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the present invention is to provide a Mini type low-loss LAN-WDM passive optical module, which is directed to the above-mentioned defects of the prior art.
The utility model provides a technical scheme that its technical problem adopted is:
constructing a Mini type low-loss LAN-WDM passive optical module, wherein the module comprises a substrate; the collimator assembly, the right-angle prism assembly, the optical filter assembly and the reflector are fixedly arranged on the substrate from left to right in sequence;
the collimator assembly comprises an input collimator used for inputting a plurality of optical signals with different wavelengths together and a plurality of output collimators corresponding to the optical signals one by one; the input collimator and the plurality of output collimators are arranged parallel to each other;
the right-angle prism assembly comprises an input right-angle prism corresponding to the input collimator and a plurality of output right-angle prisms corresponding to the plurality of output collimators one to one; the output right-angle prisms are arranged in parallel with each other;
the optical filter assembly comprises a plurality of optical filters which respectively have selective passing effects on a plurality of optical signals; the plurality of optical filters correspond to the plurality of output right-angle prisms one by one; the plurality of filters are arranged in parallel with each other.
The Mini type low loss LAN-WDM passive optical module of the present invention, wherein the input collimator and the plurality of output collimators are sequentially arranged from top to bottom; the inclined plane of the input right-angle prism faces to the upper right; the inclined plane of the output right-angle prism faces to the lower right.
The Mini type low-loss LAN-WDM passive optical module of the present invention, wherein the input collimator is used for inputting four optical signals with wavelengths of 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm together; four output collimators, four output right-angle prisms and four optical filters are arranged; the four optical filters arranged from top to bottom have selective passing effects on four optical signals with the wavelengths of 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm in sequence.
The utility model discloses a Mini type low-loss LAN-WDM passive optical module, wherein, the input collimator includes optic fibre; the optical fiber is sleeved with a capillary tube; a glass tube is fixedly sleeved outside the capillary tube; a lens is fixedly arranged at one end of the optical fiber; one end of the lens close to the optical fiber is arranged outside the capillary tube and inside the glass tube.
Mini type low-loss LAN-WDM passive optical module, wherein, the output collimator with the structure of input collimator is the same.
The utility model discloses a Mini type low-loss LAN-WDM passive optical module, wherein, the base plate is a cube plate; two adjacent side surfaces of the substrate are in transition through arc surfaces.
The Mini type low-loss LAN-WDM passive optical module of the utility model, wherein, the upper and lower sides and the right side of the reflector are provided with positioning plates; the positioning plate is fixedly connected with the base plate.
The beneficial effects of the utility model reside in that: when the optical fiber demultiplexer works, a plurality of optical signals with different wavelengths are input through the input collimator and then are refracted through the input right-angle prism to reach the reflector, and then under the reflection action of the reflector, the selection passing action of the optical filter and the refraction action of the output right-angle prism, the plurality of optical signals respectively reach the plurality of output collimators corresponding to the optical signals and are output, so that demultiplexing is realized; the input right-angle prism is arranged, so that the input collimator and the output collimator can be arranged in parallel, the whole structure is compact, the size is small, and the occupied space is small; the arrangement of the output right-angle prism enables the output collimators to be arranged in a close and parallel mode, so that the whole structure is compact, the size is small, and the occupied space is small.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:
fig. 1 is a schematic structural diagram of a Mini-type low-loss LAN-WDM passive optical module according to a preferred embodiment of the present invention;
fig. 2 is a schematic diagram of an optical path of the Mini-type low-loss LAN-WDM passive optical module according to the preferred embodiment of the present invention during operation (the line with an arrow in the figure represents the optical path);
fig. 3 is a schematic structural diagram of an input collimator of a Mini-type low-loss LAN-WDM passive optical module according to a preferred embodiment of the present invention;
fig. 4 is a schematic diagram of the structure of the most common LAN-WDM passive optical module currently on the market.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The schematic structural diagram of the Mini type low-loss LAN-WDM passive optical module according to the preferred embodiment of the present invention is shown in fig. 1, and refer to fig. 2 to 3; comprises a substrate 9; a collimator assembly, a right-angle prism assembly, an optical filter assembly and a reflector 7 are fixedly arranged on the substrate 9 from left to right in sequence;
the collimator assembly comprises an input collimator 1 and a plurality of output collimators 2, wherein the input collimator 1 is used for inputting a plurality of optical signals with different wavelengths together, and the output collimators correspond to the optical signals one to one; the input collimator 1 and the plurality of output collimators 2 are arranged parallel to each other;
the right-angle prism assembly comprises an input right-angle prism 4 corresponding to the input collimator 1 and a plurality of output right-angle prisms 3 corresponding to the output collimators 2 one by one; a plurality of output right-angle prisms 3 are arranged in parallel with each other;
the optical filter assembly comprises a plurality of optical filters 5 which respectively have selective passing effects on a plurality of optical signals; the plurality of optical filters 5 correspond to the plurality of output right-angle prisms 3 one to one; the plurality of filters 5 are arranged in parallel with each other.
During operation, a plurality of optical signals with different wavelengths are input through the input collimator 1, then are refracted through the input right-angle prism 4 and reach the reflector 7, and then under the reflection action of the reflector 7, the selective passing action of the optical filter 5 and the refraction action of the output right-angle prism 3, the plurality of optical signals respectively reach the plurality of output collimators 2 corresponding to the optical signals and are output, so that demultiplexing is realized; the input right-angle prism 4 is arranged, so that the input collimator 1 can be arranged in parallel with the output collimator 2, and the whole structure is compact, the size is small, and the occupied space is small; the arrangement of the output right-angle prism 3 enables the output collimators 2 to be arranged in a close and parallel mode, so that the whole structure is compact, the size is small, and the occupied space is small.
Preferably, the input collimator 1 and the plurality of output collimators 2 are arranged in sequence from top to bottom; the inclined plane of the input right-angle prism 4 faces to the upper right; the inclined surface of the output rectangular prism 3 faces downward to the right.
Preferably, the input collimator 1 is used for inputting four optical signals with the wavelengths of 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm together; four output collimators 2, four output right-angle prisms 3 and four optical filters 5 are arranged; the four optical filters 5 arranged from top to bottom have selective passing function on four optical signals with the wavelengths of 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm in sequence.
When the optical fiber laser device works, four optical signals with the wavelengths of 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm are input together through the input collimator 1, then are refracted through the input right-angle prism 4 and reach the position of the reflecting mirror 7, the optical signals with the wavelength of 1295.56nm reach the position of the first optical filter 5, the optical signals pass through the first optical filter 5 selectively, reach the position of the first output right-angle prism 3 through the first optical filter 5, reach the first output collimator 2 after being refracted through the first output right-angle prism 3 and output through the first output right-angle prism, three optical signals with the wavelengths of 1300.05nm, 1304.58nm and 1309.14nm, which are not passed through by the first optical filter 5, are reflected to the position of the reflecting mirror by the first optical filter 5, reach the position of the second optical filter 5 after being reflected by the reflecting mirror 7, the optical signals with the wavelength of 1300.05nm pass through the second optical filter 5 selectively, and reach the position of the second output right-angle prism 3 through the second optical filter 5, the light signals with the wavelengths of 1304.58nm and 1309.14nm which are not selectively passed by the second optical filter 5 are reflected to the reflector 7 by the second optical filter 5 and then reach the third optical filter 5 by the reflector 7 after being reflected, the light signals with the wavelength of 1304.58nm which are selectively passed by the third optical filter 5 pass through the third optical filter 5 to the third output right-angle prism 3 and then reach the third output collimator 2 after being reflected by the third output right-angle prism 3 and then are output by the third optical filter 5, the light signals with the wavelengths of 1309.14nm which are not selectively passed by the third optical filter 5 are reflected to the reflector 7 by the third optical filter 5, and then reach the fourth optical filter 5 after being reflected by the reflector 7 and then pass through the fourth optical filter 5, and then reach the fourth output right-angle prism 3 after passing through the fourth optical filter 5, and the light is refracted by a fourth output right-angle prism 3, reaches a fourth output collimator 2 and is output by the fourth output collimator, and the demultiplexing is finished.
Preferably, the input collimator 1 comprises an optical fiber 10; a capillary tube 11 is sleeved outside the optical fiber 10; a glass tube 12 is fixedly sleeved outside the capillary tube 11; a lens 13 is fixedly arranged at one end of the optical fiber 10; the end of the lens 13 near the optical fiber 10 is disposed outside the capillary 11 and inside the glass tube 12.
Preferably, the output collimator 2 has the same structure as the input collimator 1.
Preferably, the base plate 9 is a cubic plate; two adjacent side surfaces of the substrate 9 are transited through the arc-shaped surface 8; the arrangement of the arc-shaped surface 8 improves the safety and the attractiveness.
Preferably, the upper side, the lower side and the right side of the reflector 7 are provided with positioning plates 6; the positioning plate 6 is fixedly connected with the base plate 9; the positioning plate 6 is arranged to position the reflector 7 conveniently.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (7)
1. A Mini type low loss LAN-WDM passive optical module is characterized in that it comprises a substrate; the collimator assembly, the right-angle prism assembly, the optical filter assembly and the reflector are fixedly arranged on the substrate from left to right in sequence;
the collimator assembly comprises an input collimator used for inputting a plurality of optical signals with different wavelengths together and a plurality of output collimators corresponding to the optical signals one by one; the input collimator and the plurality of output collimators are arranged parallel to each other;
the right-angle prism assembly comprises an input right-angle prism corresponding to the input collimator and a plurality of output right-angle prisms corresponding to the plurality of output collimators one to one; the output right-angle prisms are arranged in parallel with each other;
the optical filter assembly comprises a plurality of optical filters which respectively have selective passing effects on a plurality of optical signals; the plurality of optical filters correspond to the plurality of output right-angle prisms one by one; the plurality of filters are arranged in parallel with each other.
2. A Mini type low loss LAN-WDM passive optical module according to claim 1, wherein said input collimator and said plurality of output collimators are arranged in sequence from top to bottom; the inclined plane of the input right-angle prism faces to the upper right; the inclined plane of the output right-angle prism faces to the lower right.
3. A Mini type low loss LAN-WDM passive optical module according to claim 2, wherein the input collimator is configured to input four optical signals with wavelengths of 1295.56nm, 1300.05nm, 1304.58nm, and 1309.14nm together; four output collimators, four output right-angle prisms and four optical filters are arranged; the four optical filters arranged from top to bottom have selective passing effects on four optical signals with the wavelengths of 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm in sequence.
4. A Mini type low loss LAN-WDM passive optical module according to claim 1, wherein said input collimator comprises an optical fiber; the optical fiber is sleeved with a capillary tube; a glass tube is fixedly sleeved outside the capillary tube; a lens is fixedly arranged at one end of the optical fiber; one end of the lens close to the optical fiber is arranged outside the capillary tube and inside the glass tube.
5. A Mini-type low loss LAN-WDM passive optical module according to any one of claims 1-4, wherein said output collimator and said input collimator are structurally identical.
6. A Mini type low loss LAN-WDM passive optical module according to claim 1, wherein said substrate is a cuboid plate; two adjacent side surfaces of the substrate are in transition through arc surfaces.
7. A Mini type low loss LAN-WDM passive optical module according to claim 1, wherein the upper and lower sides and the right side of the reflector are provided with positioning plates; the positioning plate is fixedly connected with the base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022899253.0U CN214201850U (en) | 2020-12-04 | 2020-12-04 | Mini type low-loss LAN-WDM passive optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022899253.0U CN214201850U (en) | 2020-12-04 | 2020-12-04 | Mini type low-loss LAN-WDM passive optical module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214201850U true CN214201850U (en) | 2021-09-14 |
Family
ID=77650129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022899253.0U Active CN214201850U (en) | 2020-12-04 | 2020-12-04 | Mini type low-loss LAN-WDM passive optical module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214201850U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859472A (en) * | 2022-05-25 | 2022-08-05 | 珠海光焱科技有限公司 | Multifunctional integrated optical device |
-
2020
- 2020-12-04 CN CN202022899253.0U patent/CN214201850U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859472A (en) * | 2022-05-25 | 2022-08-05 | 珠海光焱科技有限公司 | Multifunctional integrated optical device |
| CN114859472B (en) * | 2022-05-25 | 2022-12-06 | 珠海光焱科技有限公司 | Multifunctional integrated optical device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7889991B2 (en) | Planar lightwave circuit based tunable 3 port filter | |
| CN213659025U (en) | Light receiving assembly and optical module | |
| CN105938222B (en) | compact wavelength division multiplexer based on small-angle filter plate | |
| CN214201850U (en) | Mini type low-loss LAN-WDM passive optical module | |
| Mahlein | Fiber-optic communication in the wavelength-division multiplex mode | |
| CN115267975B (en) | Wavelength division multiplexer and wavelength division composite processing module | |
| CN216285820U (en) | Free space multiplex wavelength division multiplex device with turning structure | |
| JPS6046682B2 (en) | Optical multiplexing/demultiplexing circuit for optical beams | |
| CN210348082U (en) | Wave splitting and combining optical assembly | |
| JPH0527136A (en) | Optical multiplexer/demultiplexer | |
| CN113311543A (en) | Novel coarse wavelength division multiplexer assembly | |
| CN113495323A (en) | Multi-wavelength division multiplexing demultiplexing optical assembly | |
| JP2003315605A (en) | Optical device | |
| KR100499260B1 (en) | apparatus for add/drop of optical signal | |
| EP0237557B1 (en) | Fibre optic assembly | |
| CN212207744U (en) | WDM demultiplexer based on thin film interference filter | |
| WO2000041015A1 (en) | Dense wavelength division multiplexer using multiple reflection optical delay lines | |
| CN213715525U (en) | Reflection-type filter device and filter system thereof | |
| CN111443431A (en) | WDM demultiplexer based on thin film interference filter | |
| Mahlein | A high performance edge filter for wavelength-division multi-demultiplexer units | |
| JPS60191210A (en) | Optical waveguide device | |
| CN201340488Y (en) | Small comb filter with low chromatic dispersion | |
| JP2001264572A (en) | Interference light filter module device | |
| Scobey et al. | Thin film filter based components for optical add/drop | |
| KR100310138B1 (en) | Apparatus for separating and uniting optical signals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |