CN203658617U - Fiber filter - Google Patents
Fiber filter Download PDFInfo
- Publication number
- CN203658617U CN203658617U CN201320763539.3U CN201320763539U CN203658617U CN 203658617 U CN203658617 U CN 203658617U CN 201320763539 U CN201320763539 U CN 201320763539U CN 203658617 U CN203658617 U CN 203658617U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- fiber filter
- filter
- annulus
- fiber
- 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.)
- Expired - Lifetime
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 29
- 239000013307 optical fiber Substances 0.000 claims description 33
- 238000004804 winding Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 7
- 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
Images
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The utility model discloses a fiber filter including a fiber. The fiber filter is characterized in that: the fiber is a bare fiber ring which is formed by winding of a bare fiber; two ends of the bare fiber ring are respectively connected with a single core cable, and is arranged in a box; the other end of the single core cable is provided with a light joint; and the light joint is an input / output end of the fiber filter. The fiber filter has the advantages of simple structure and low cost.
Description
Technical field
The utility model 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: film-type wave filter, optical fiber acousto-optic filter, fiber grating filter, grating filter, optical fiber Fabry one perot filter, optical plane waveguide filter, the melting cone type optical fiber filter made by plated film.In optical cable on-line monitoring system, optical fiber of on-line monitoring, just at least need 4 optical fiber filters, along with the cost of 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.
Utility model content
The purpose of this utility model 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 utility model object is:
A kind of optical fiber filter, comprise optical fiber, unlike the prior art: optical fiber is the bare fibre annulus 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 utility model 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 the optical fiber filter of, light signal blocking-up to 1550nm window.。
The utility model has the advantages that: simple in structure, cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model optical fiber filter.
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: optical fiber is the bare fibre annulus 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 200 ~ 400 circles, the diameter annulus that is 30mm ~ 35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763539.3U CN203658617U (en) | 2013-11-28 | 2013-11-28 | Fiber filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320763539.3U CN203658617U (en) | 2013-11-28 | 2013-11-28 | Fiber filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203658617U true CN203658617U (en) | 2014-06-18 |
Family
ID=50924992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320763539.3U Expired - Lifetime CN203658617U (en) | 2013-11-28 | 2013-11-28 | Fiber filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203658617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605186A (en) * | 2013-11-28 | 2014-02-26 | 桂林聚联科技有限公司 | Optical fiber filter |
-
2013
- 2013-11-28 CN CN201320763539.3U patent/CN203658617U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605186A (en) * | 2013-11-28 | 2014-02-26 | 桂林聚联科技有限公司 | Optical fiber filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |