CN202649522U - WDM multiplexing and demultiplexing device with small structure - Google Patents
WDM multiplexing and demultiplexing device with small structure Download PDFInfo
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- CN202649522U CN202649522U CN 201220274724 CN201220274724U CN202649522U CN 202649522 U CN202649522 U CN 202649522U CN 201220274724 CN201220274724 CN 201220274724 CN 201220274724 U CN201220274724 U CN 201220274724U CN 202649522 U CN202649522 U CN 202649522U
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- wdm
- total reflection
- right angle
- reflection prism
- optical filter
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Abstract
The utility model relates to a WDM multiplexing and demultiplexing device with a small structure. The WDM multiplexing and demultiplexing device with the small structure comprises a right angle total reflection prism and at least two WDM optical filters, wherein the WDM optical filters are respectively pasted at an inclined plane of the right angle total reflection prism, an outer side of any WDM optical filter is correspondingly provided with a collimator respectively, an outer side of the inclined plane of the right angle total reflection prism is correspondingly provided with a collimator, and any collimator is fixedly arranged on a collimator support respectively. After total reflection of the light through the prism, incident light arrives at the optical filters, a light beam with specific wave length permeates the corresponding optical filter and is outputted by the corresponding collimator, other light beams with other wave length are reflected by the optical filter to the prism, after continuously total reflection, other light beams are respectively outputted after permeating the optical filters with other wave length. The WDM multiplexing and demultiplexing device with the small structure has simple assembly technology, can realize light beam multiplexing and demultiplexing of the light beams, and has small insertion loss, small packaging dimensions; the right angle total reflection prism and the collimators are fixed on the collimator support through glue, and sleeve tubes of the collimators are circular tubes, and the collimators have small contact faces with the support, so temperature stability is improved.
Description
Technical field:
The utility model relates to physical field, relates in particular to optical fiber communication equipment, particularly multiplexing the and demodulation multiplexer of a kind of WDM of small-scale structure.
Background technology:
Fibre Optical Communication Technology is widely used in telecommunications, data transmission and the CATV (cable television).High performance optical fiber telecommunications system requires optical module wherein to have good optical property and temperature stability.In order in same optical fiber, to transmit multiple signals, available technology adopting wavelength-division multiplex technique (wavelength-division multiplexing, be called for short WDM), can allow simultaneously two or more optical wavelength signals pass through separately transmission information of different optical channels.Wavelength-division multiplex technique is realized by multiplexing and demodulation multiplexer.By the single fiber collimating apparatus, filter plate and two fine collimating apparatuss consist of the individual devices of WDM, form the multiplexing and demultiplexing module of WDM by two or more such individual devices cascades.Multiplexing and the demultiplexing module insertion loss of this structure is larger, and temperature influence is large, and package dimension is large, is unfavorable for the system integration.
US Patent No. 2004/0067014A1 improves traditional structure, and a series of narrow band pass filter and reflector plate are fixed on the substrate, and light beam successively passes through reflector plate through a collimating apparatus incident, behind the narrow band filter slice, is coupled in the output collimator.The shortcoming of this patent is, reflector plate is relevant with port number, and port number is more, and reflector plate is more, and reflector plate is to angular-sensitive, and port number is more, the more difficult coupling of light path, and be subjected to the impact of temperature larger.
Similarly United States Patent (USP) also has US2005/0141815 A1 and US2003/0138194 A1 etc., but the basic structure of these patents is similar to the above, and temperature stability is not fine.
Summary of the invention:
The purpose of this utility model is to provide the multiplexing and demodulation multiplexer of a kind of WDM of small-scale structure, and the multiplexing and demodulation multiplexer of the WDM of described this small-scale structure will solve multiplexing in the prior art and the undesirable technical matters of demodulation multiplexer temperature stability.
Multiplexing and the demodulation multiplexer of the WDM of this small-scale structure of the present utility model, comprise a right angle total reflection prism and at least two WDM optical filters, described right angle total reflection prism includes two right angle faces and an inclined-plane, any one described WDM optical filter all includes a reflecting surface, wherein, described WDM optical filter all is attached in the inclined-plane of described right angle total reflection prism, the outside of any one WDM optical filter all separately correspondence be provided with a collimating apparatus, the outside on the inclined-plane of right angle total reflection prism also correspondence is provided with a collimating apparatus, and any one collimating apparatus all is fixedly installed on the collimating apparatus support.
Further, be coated with anti-reflection film on the inclined-plane of right angle total reflection prism.
Further, described WDM optical filter is scattered in two rows on the inclined-plane of right angle total reflection prism, and upper row WDM optical filter and lower row WDM optical filter are interspersed in the horizontal.
Further, described collimating apparatus support is fixedly installed on the inclined-plane of right angle total reflection prism.
Further, all collimating apparatus all is arranged on the same collimating apparatus support.
Further, the collimating apparatus support is vertical with the inclined-plane of right angle total reflection prism.
Further, the inclined-plane of the reflecting surface of WDM optical filter and right angle total reflection prism in opposite directions.
Further, the edge of WDM optical filter is connected by the inclined-plane of glue with the right angle total reflection prism.
Further, any one described collimating apparatus all comprises lens, an optical fiber head and a collimating apparatus sleeve pipe separately, described optical fiber head and described lens all are fixed in the described collimating apparatus sleeve pipe separately, optical fiber head is made of optical fiber and ferrule, and described optical fiber is positioned at described ferrule.
Further, the radial section of described collimating apparatus sleeve pipe is rounded.
Principle of work of the present utility model is: be transferred in the application of a plurality of optical fiber after will decomposing from the light beam of a plurality of wavelength in one road optical fiber, corresponding to the collimating apparatus on the inclined-plane of right angle total reflection prism as light input end, after the total reflection of light beam through two right angle faces in the right angle total reflection prism, incide on first optical filter, the light beam of specific wavelength sees through first optical filter by the collimating apparatus output of correspondence, the light beam of its commplementary wave length is reflected back the inclined-plane of right angle total reflection prism by first optical filter, again through the total reflection of right angle total reflection prism, by behind the WDM optical filter of other specific wavelength, enter respectively corresponding collimating apparatus output successively.
Will be from the light beam concentration of transmissions of a plurality of wavelength of a plurality of optical fiber in the application of one road optical fiber, corresponding to the collimating apparatus on the inclined-plane of right angle total reflection prism as light output end, the light beam of each wavelength outputs to the WDM optical filter by the collimating apparatus on the Transmission Fibers separately, after seeing through the WDM optical filter, through the total reflection of right angle total reflection prism, output to one road optical fiber from light output end.
The utility model is compared with prior art, and its effect is actively with obvious.The utility model all is fixedly installed on whole WDM optical filters in the same inclined-plane of right angle total reflection prism, assembly technology is simple during paster, utilize the right angle total reflection prism to cooperate the multiplexing and demultiplexing of realizing light beam with the WDM optical filter of a plurality of different wave lengths, insertion loss is little, and package dimension is little, is easy to assembling, right angle total reflection prism, collimating apparatus are fixed on the collimating apparatus support by glue, the collimating apparatus sleeve pipe is pipe, and is little with collimating apparatus support surface of contact, greatly improved temperature stability.
Description of drawings:
Fig. 1 is the side structure schematic diagram of the multiplexing and demodulation multiplexer of the WDM of small-scale structure of the present utility model.
Fig. 2 is the structural representation on the inclined-plane of the right angle total reflection prism in the multiplexing and demodulation multiplexer of the WDM of small-scale structure of the present utility model.
Fig. 3 is the structural representation of the collimating apparatus in the multiplexing and demodulation multiplexer of the WDM of small-scale structure of the present utility model
Embodiment:
Embodiment 1:
As depicted in figs. 1 and 2, multiplexing and the demodulation multiplexer of the WDM of small-scale structure of the present utility model, comprise a right angle total reflection prism 301, WDM optical filter 3041, WDM optical filter 3042, WDM optical filter 3043 and WDM optical filter 3044, described right angle total reflection prism 301 includes two right angle faces and an inclined-plane, WDM optical filter 3041, WDM optical filter 3042, WDM optical filter 3043 and WDM optical filter 3044 include a reflecting surface separately, WDM optical filter 3041, WDM optical filter 3042, WDM optical filter 3043 and WDM optical filter 3044 all are attached in the inclined-plane of right angle total reflection prism 301, the outside of any one WDM optical filter all separately correspondence be provided with a collimating apparatus, the outside correspondence of expressing WDM optical filter 3041 among Fig. 1 is provided with a collimating apparatus 3031, the outside correspondence of WDM optical filter 3042 is provided with a collimating apparatus 3032, the outside on the inclined-plane of right angle total reflection prism 301 also correspondence is provided with a collimating apparatus (not shown), position 305 in the inclined-plane of right angle total reflection prism 301 be incident ray in the position of prism surface, all collimating apparatuss all are fixedly installed on the collimating apparatus support 302.
Further, be coated with anti-reflection film on the inclined-plane of right angle total reflection prism 301.
Further, WDM optical filter 3041, WDM optical filter 3042, WDM optical filter 3043 and WDM optical filter 3044 are scattered in two rows on the inclined-plane of right angle total reflection prism 301, and upper row's WDM optical filter 3042 and WDM optical filter 3044 are interspersed in the horizontal with lower row's WDM optical filter 3041 and WDM optical filter 3043.
Further, collimating apparatus support 302 is fixedly installed on the inclined-plane of right angle total reflection prism 301.
Further, all collimating apparatus all is arranged on the same collimating apparatus support 302.
Further, collimating apparatus support 302 is vertical with the inclined-plane of right angle total reflection prism 301.
Further, the inclined-plane of the reflecting surface of WDM optical filter and right angle total reflection prism 301 in opposite directions.
Further, the edge of WDM optical filter is connected by the inclined-plane of glue with right angle total reflection prism 301.
The principle of work of the present embodiment is: be transferred in the application of a plurality of optical fiber after will decomposing from the light beam of a plurality of wavelength in one road optical fiber, corresponding to the collimating apparatus on the inclined-plane of right angle total reflection prism 301 as light input end, after the total reflection of light beam through two right angle faces in the right angle total reflection prism 301, incide on first optical filter, the light beam of specific wavelength sees through first optical filter by the collimating apparatus output of correspondence, the light beam of its commplementary wave length is reflected back the inclined-plane of right angle total reflection prism 301 by first filter plate, again through the total reflection of right angle total reflection prism 301, by behind the WDM optical filter of other specific wavelength, enter respectively corresponding collimating apparatus output successively.
Will be from the light beam concentration of transmissions of a plurality of wavelength of a plurality of optical fiber in the application of one road optical fiber, corresponding to the collimating apparatus on the inclined-plane of right angle total reflection prism 301 as light output end, the light beam of each wavelength outputs to the WDM optical filter by the collimating apparatus on the Transmission Fibers separately, after seeing through the WDM optical filter, through the total reflection of right angle total reflection prism 301, output to one road optical fiber from light output end.
As shown in Figure 3, collimating apparatus comprises lens 502, optical fiber head 503 and collimating apparatus sleeve pipe 501, and optical fiber head 503 and lens 502 are positioned at collimating apparatus sleeve pipe 501, and fix by glue.Optical fiber head 503 is made of optical fiber 5032 and ferrule 5031, and optical fiber 5032 is positioned at ferrule 5031, and interfixes by glue.The end face of optical fiber head 503 and lens 502 all is coated with anti-reflection film.
Collimating apparatus 303 adopts adhesive curing with collimating apparatus support 302, and collimating apparatus sleeve pipe 501 is cylindrical tube, and is little with collimating apparatus support 302 surface of contact, adopts adhesive curing, and temperature stability is good.
Claims (10)
1. the multiplexing and demodulation multiplexer of the WDM of a small-scale structure, comprise a right angle total reflection prism and at least two WDM optical filters, described right angle total reflection prism includes two right angle faces and an inclined-plane, any one described WDM optical filter all includes a reflecting surface, it is characterized in that: described WDM optical filter all is attached in the inclined-plane of described right angle total reflection prism, the outside of any one WDM optical filter all separately correspondence be provided with a collimating apparatus, the outside on the inclined-plane of right angle total reflection prism also correspondence is provided with a collimating apparatus, and any one collimating apparatus all is fixedly installed on the collimating apparatus support.
2. and demodulation multiplexer multiplexing such as the WDM of the described small-scale structure of claim 1 is characterized in that: be coated with anti-reflection film on the inclined-plane of right angle total reflection prism.
3. and demodulation multiplexer multiplexing such as the WDM of the described small-scale structure of claim 1, it is characterized in that: described WDM optical filter is scattered in two rows on the inclined-plane of right angle total reflection prism, and upper row WDM optical filter and lower row WDM optical filter are interspersed in the horizontal.
4. and demodulation multiplexer multiplexing such as the WDM of the described small-scale structure of claim 1, it is characterized in that: described collimating apparatus support is fixedly installed on the inclined-plane of right angle total reflection prism.
5. and demodulation multiplexer multiplexing such as the WDM of the described small-scale structure of claim 1 is characterized in that: all collimating apparatuss all are arranged on the same collimating apparatus support.
6. and demodulation multiplexer multiplexing such as the WDM of the described small-scale structure of claim 1, it is characterized in that: the collimating apparatus support is vertical with the inclined-plane of right angle total reflection prism.
7. and demodulation multiplexer multiplexing such as the WDM of the described small-scale structure of claim 1, it is characterized in that: the inclined-plane of the reflecting surface of WDM optical filter and right angle total reflection prism in opposite directions.
8. and demodulation multiplexer multiplexing such as the WDM of the described small-scale structure of claim 1, it is characterized in that: the edge of WDM optical filter is connected by the inclined-plane of glue with the right angle total reflection prism.
9. and demodulation multiplexer multiplexing such as the WDM of the described small-scale structure of claim 1, it is characterized in that: any one described collimating apparatus all comprises lens, an optical fiber head and a collimating apparatus sleeve pipe separately, described optical fiber head and described lens all are fixed in the described collimating apparatus sleeve pipe separately, optical fiber head is made of optical fiber and ferrule, and described optical fiber is positioned at described ferrule.
10. and demodulation multiplexer multiplexing such as the WDM of the described small-scale structure of claim 9, it is characterized in that: the radial section of described collimating apparatus sleeve pipe is rounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220274724 CN202649522U (en) | 2012-06-12 | 2012-06-12 | WDM multiplexing and demultiplexing device with small structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220274724 CN202649522U (en) | 2012-06-12 | 2012-06-12 | WDM multiplexing and demultiplexing device with small structure |
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| CN202649522U true CN202649522U (en) | 2013-01-02 |
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| CN 201220274724 Expired - Fee Related CN202649522U (en) | 2012-06-12 | 2012-06-12 | WDM multiplexing and demultiplexing device with small structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425338A (en) * | 2015-11-10 | 2016-03-23 | 武汉电信器件有限公司 | Wavelength division multiplexing/demultiplexing component |
| CN105938222A (en) * | 2015-12-31 | 2016-09-14 | 杭州富光科技有限公司 | Small-angle-type-filter-plate-based compact type wavelength division multiplexer |
| WO2019001444A1 (en) * | 2017-06-28 | 2019-01-03 | Huawei Technologies Co., Ltd. | Filter block for an n-channel multiplexing/demultiplexing device and optical wavelength division/demultiplexing device |
| CN109917516A (en) * | 2019-03-29 | 2019-06-21 | 中国计量大学 | A kind of compact wavelength division multiplexer |
| CN111736267A (en) * | 2020-07-27 | 2020-10-02 | 武汉沃隆云网通信技术股份有限公司 | Ultra-small compact type multi-channel wavelength division multiplexing module |
-
2012
- 2012-06-12 CN CN 201220274724 patent/CN202649522U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425338A (en) * | 2015-11-10 | 2016-03-23 | 武汉电信器件有限公司 | Wavelength division multiplexing/demultiplexing component |
| CN105425338B (en) * | 2015-11-10 | 2019-03-08 | 武汉电信器件有限公司 | A kind of wavelength-division multiplex/demultiplexing component |
| CN105938222A (en) * | 2015-12-31 | 2016-09-14 | 杭州富光科技有限公司 | Small-angle-type-filter-plate-based compact type wavelength division multiplexer |
| CN105938222B (en) * | 2015-12-31 | 2019-12-10 | 杭州富光科技有限公司 | compact wavelength division multiplexer based on small-angle filter plate |
| WO2019001444A1 (en) * | 2017-06-28 | 2019-01-03 | Huawei Technologies Co., Ltd. | Filter block for an n-channel multiplexing/demultiplexing device and optical wavelength division/demultiplexing device |
| CN109917516A (en) * | 2019-03-29 | 2019-06-21 | 中国计量大学 | A kind of compact wavelength division multiplexer |
| CN109917516B (en) * | 2019-03-29 | 2024-04-05 | 中国计量大学 | Compact wavelength division multiplexer |
| CN111736267A (en) * | 2020-07-27 | 2020-10-02 | 武汉沃隆云网通信技术股份有限公司 | Ultra-small compact type multi-channel wavelength division multiplexing module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20170612 |