CN103605186A - Optical fiber filter - Google Patents
Optical fiber filter Download PDFInfo
- Publication number
- CN103605186A CN103605186A CN201310615561.8A CN201310615561A CN103605186A CN 103605186 A CN103605186 A CN 103605186A CN 201310615561 A CN201310615561 A CN 201310615561A CN 103605186 A CN103605186 A CN 103605186A
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- CN
- China
- Prior art keywords
- optical fiber
- fiber filter
- filter
- annulus
- optical
- 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.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 43
- 239000000835 fiber Substances 0.000 claims description 19
- 230000003287 optical effect Effects 0.000 abstract description 10
- 238000004804 winding Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000253 optical time-domain reflectometry Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses an optical fiber filter. The optical fiber filter comprises an optical fiber and is characterized in that the optical fiber is a bare optical fiber ring formed by winding a bare optical fiber, the two ends of the bare optical fiber ring are connected with a single-core optical cable respectively and are arranged in a box, and an optical connector is arranged at the other end of the single-core optical cable and servers as the input/output end of the optical fiber filter. The optical fiber filter has the advantages of being simple in structure and low in cost.
Description
Technical field
The present invention relates to optical communication field, specifically a kind of optical fiber filter.
Background technology
At optical communication field, no matter be communication system, or test macro, often use various optical fiber filters.Optical fiber filter mainly contains several types at present: the film-type wave filter of making by plated film, optical fiber acousto-optic filter, fiber grating filter, grating filter, optical fiber Fabry one perot filter, optical plane waveguide filter, melting cone type optical fiber filter.In optical cable on-line monitoring system, optical fiber of on-line monitoring, just at least need 4 optical fiber filters, cost along with OTDR, photoswitch, the proportion that the cost of optical fiber filter accounts in system cost strengthens, for the universal optical cable on-line monitoring system that uses, the average unit cost of optical fiber filter must be reduced to dozens of yuan Renminbi.
Summary of the invention
Object of the present invention is for the deficiencies in the prior art, and the optical fiber filter that a kind of cost is low is provided.
The technical scheme that realizes the object of the invention is:
A kind of optical fiber filter, comprise optical fiber, unlike the prior art: the bare fibre annulus of optical fiber for being formed by a bare fibre coiling, the two ends of Naked optical fiber annulus are connected with single fiber cable respectively, and be arranged in a box body, the other end of single fiber cable is provided with light connector, the input/output terminal that this light connector is optical fiber filter.
Described Naked optical fiber annulus be by one G.652/654 the bare fibre of type to be coiled into the number of turns be 200 ~ 400 circles, the diameter annulus that is 30mm ~ 35mm.
Principle of work of the present invention is: insensitive to fibre-optical bending to the attenuated optical signal of 1310nm window according to optical fiber macrobend optical fiber theoretical and G.652/654 type, and to the attenuated optical signal of 1550nm window the characteristic to fibre-optical bending sensitivity, by one G.652/654 the bare fibre of type to be coiled into the number of turns be 200 ~ 400 circles, the diameter annulus that is 30mm ~ 35mm, make the light signal of 1310nm window by, optical fiber filter to the light signal blocking-up of 1550nm window.。
Advantage of the present invention is: simple in structure, cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of optical fiber filter of the present invention.
In figure: 1. bare fibre annulus 2. single fiber cable 3. fusion point 4. optical fiber filter input/output terminals.
Embodiment
Specific embodiment below.
A kind of optical fiber filter, be by one G.652/654 the bare fibre of type to be coiled into the number of turns be the bare fibre annulus 1 that 400 circles, diameter are 35mm, the two ends of bare fibre are carried out to welding with two one end with the single fiber cable 2 of light connector respectively, then use epoxy resin that two fusion points 3 and bare fibre annulus 1 are enclosed in box, two light connectors become optical fiber filter input/output terminal 4.
The optical fiber filter of making is conducting state to the light signal of 1260nm ~ 1380nm wavelength, and insertion loss is less than 1dB(and comprises that two are flexibly connected a loss); The light signal of 1500nm ~ 1650nm wavelength is to the logical state of resistance, and insertion loss is greater than 30dB(and comprises that two are flexibly connected a loss).
Claims (2)
1. an optical fiber filter, comprise optical fiber, it is characterized in that: the bare fibre annulus of optical fiber for being formed by a bare fibre coiling, the two ends of Naked optical fiber annulus are connected with single fiber cable respectively, and be arranged in a box body, the other end of single fiber cable is provided with light connector, the input/output terminal that this light connector is optical fiber filter.
2. optical fiber filter according to claim 1, is characterized in that: described Naked optical fiber annulus be by one G.652/654 the bare fibre of type to be coiled into the number of turns be the annulus that 200 ~ 400 circles, diameter are 30mm ~ 35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615561.8A CN103605186A (en) | 2013-11-28 | 2013-11-28 | Optical fiber filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615561.8A CN103605186A (en) | 2013-11-28 | 2013-11-28 | Optical fiber filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103605186A true CN103605186A (en) | 2014-02-26 |
Family
ID=50123426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310615561.8A Pending CN103605186A (en) | 2013-11-28 | 2013-11-28 | Optical fiber filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103605186A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53144601A (en) * | 1977-05-23 | 1978-12-16 | Sumitomo Electric Ind Ltd | Light communication channel |
| US4762416A (en) * | 1985-11-08 | 1988-08-09 | Thomson-Csf | Monomode optical fiber reciprocal ring interferometer device |
| CN1347511A (en) * | 1999-01-25 | 2002-05-01 | 康宁股份有限公司 | Distributed resonant ring fiber filter |
| CN2529268Y (en) * | 2001-11-05 | 2003-01-01 | 鸿富锦精密工业（深圳）有限公司 | Ring type fixed light attenuator |
| CN101158732A (en) * | 2007-10-16 | 2008-04-09 | 中兴通讯股份有限公司 | Light transmit-receive integrated module self-cycle realizing device |
| CN203658617U (en) * | 2013-11-28 | 2014-06-18 | 桂林聚联科技有限公司 | Fiber filter |
-
2013
- 2013-11-28 CN CN201310615561.8A patent/CN103605186A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53144601A (en) * | 1977-05-23 | 1978-12-16 | Sumitomo Electric Ind Ltd | Light communication channel |
| US4762416A (en) * | 1985-11-08 | 1988-08-09 | Thomson-Csf | Monomode optical fiber reciprocal ring interferometer device |
| CN1347511A (en) * | 1999-01-25 | 2002-05-01 | 康宁股份有限公司 | Distributed resonant ring fiber filter |
| CN2529268Y (en) * | 2001-11-05 | 2003-01-01 | 鸿富锦精密工业（深圳）有限公司 | Ring type fixed light attenuator |
| CN101158732A (en) * | 2007-10-16 | 2008-04-09 | 中兴通讯股份有限公司 | Light transmit-receive integrated module self-cycle realizing device |
| CN203658617U (en) * | 2013-11-28 | 2014-06-18 | 桂林聚联科技有限公司 | Fiber filter |
Non-Patent Citations (1)
| Title |
|---|
| 纪运景 等: "单模光纤弯曲损耗的测量与分析", 《光学与光电技术》, vol. 1, no. 5, 31 December 2003 (2003-12-31), pages 59 - 61 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140226 |