CN2529268Y - Ring type fixed light attenuator - Google Patents
Ring type fixed light attenuator Download PDFInfo
- Publication number
- CN2529268Y CN2529268Y CN 01257859 CN01257859U CN2529268Y CN 2529268 Y CN2529268 Y CN 2529268Y CN 01257859 CN01257859 CN 01257859 CN 01257859 U CN01257859 U CN 01257859U CN 2529268 Y CN2529268 Y CN 2529268Y
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- China
- Prior art keywords
- optical fiber
- ring type
- type fixed
- attenuator according
- optical attenuator
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Abstract
The utility model relates to a ring type fixed light attenuator, which comprises a ring optical fiber, an optical fiber fixed holding body and two optical fiber connectors. Wherein, the bending section for the ring optical fiber has a certain radius of curvature, which holds attenuation for the light signal energy transformed through the bending section. The optical fiber fixed holding body can bear and fix the ring optical fiber. Two ends of the ring optical fiber are respectively straightened by the two optical fiber connectors to be connected with other optical device.
Description
[technical field]
The utility model is about a kind of optical attenuator, particularly about a kind of ring type fixed optical attenuator.
[background technology]
Optical attenuator is a kind of important optical passive component that occurs along with the optical communication career development, is usually used in optical communication line, the system, and in order to absorption or reflecting part luminous energy, or in the loss of evaluating system and all kinds of experiment.
The optical attenuator kind is more, and dissimilar principle of work that optical attenuator adopted and application thereof have nothing in common with each other.Loopback (Loop-Back) type optical attenuator promptly is a kind of of optical attenuator, mainly adopts an optical fiber to form the loop, as loopback optical fiber, or in modes such as optical attenuator film and clearances, makes the light signal generating decay with attenuating fiber.The ring type optical attenuator can conveniently be connected between the optical transmitting set and photodetector of same optical device, and in order to the intensity after the certain transmission range of emulation light signal process, thereby realization is to the test of each unit of optical device.
Prior art as shown in Figure 1, it is a United States Patent (USP) the 4th, 952, the ring type optical attenuator 1 that is disclosed for No. 798.This ring type optical attenuator 1 comprises two lids (11,12), a nut 13, a loopback optical fiber 14 and two optical fiber holding bodies 15, wherein these loopback optical fiber 14 two ends are by optical fiber holding body 15 fixings, and entire card is fixed in the formed space of two lids (11,12) fastening, after two lids (11,12) fasten, the internal thread 130 of nut 13 cooperates with the external thread 110 of lid (11,12) end, to fix this two lid (11,12).
Again as shown in Figure 2, this optical fiber holding body 15 comprises an optical fiber contact pins 151, and is coated with one deck nickel/evanohm film 152 at contact pin 151 front end faces, and this film 152 contacts with optical fiber 14 end faces 143, absorb or change the energy of the light signal of optical fiber 14 transmission by film 152, reach the decay effect.
But it needs this kind ring type optical attenuator to select different optical thin films according to predetermined damping capacity usually, so, only can be used as the light emulator, and because the filming process complexity, and make manufacturing cost higher.
The fixed optical attenuator of other ring type also has by clearance or attenuating fiber to reach the decay to the light signal energy.As United States Patent (USP) the 5th, 367, No. 159 promptly is to utilize the clearance to realize attenuating, but this kind optical attenuator also has complex structure, the higher defective of cost, so, still have improved necessity.
[summary of the invention]
The purpose of this utility model be to provide a kind of simple in structure, cost is lower, utilizes curved fiber to realize the ring type fixed optical attenuator of decay.
For realizing the utility model purpose, the utility model ring type fixed optical attenuator comprises loopback optical fiber, optical fiber holding body and two optical fiber connector plugs.Wherein this loopback optical fiber comprises that one has the bending section of certain curvature radius, utilizes this loopback optical fiber to make light signal generating distribute loss because of crooked, thereby reaches the decay to the light signal energy.This optical fiber holding body can carry and fix this loopback optical fiber, and the two ends of this loopback optical fiber by this two optical fiber connector plugs collimation, can be docked with other optical devices respectively.Ring type fixed optical attenuator of the present utility model further comprises a loam cake and a base, in order to accommodating this optical fiber holding body, and this two optical fiber connector plug of fixing.Ring type fixed optical attenuator of the present utility model can be adjusted the radius-of-curvature of loopback fibre-optical bending section according to required pad value when making, and is fixed in the optical fiber holding body with epoxy resin, thereby obtains the ring type fixed optical attenuator of differential declines value.
Compared to prior art, the utlity model has following advantage: because the utility model only need be adjusted the purpose that the radius-of-curvature of loopback fibre-optical bending section can reach optical attenuation, so it is simple in structure, need not complicated light channel structure and part, can reduce cost.
[description of drawings]
Fig. 1 is the three-dimensional exploded view of prior art tool decay film ring type optical attenuator.
Fig. 2 is the stereographic map of optical fiber holding body shown in Figure 1.
Fig. 3 is the stereographic map of the utility model ring type fixed optical attenuator.
Fig. 4 is the three-dimensional exploded view of the utility model ring type fixed optical attenuator.
Fig. 5 is the part decomposition view of the utility model ring type fixed optical attenuator.
[embodiment]
Please refer to Fig. 3, Fig. 4, the utility model ring type fixed optical attenuator 2 comprises loam cake 21, base 22, optical fiber holding body 23, loopback optical fiber 24 and two SC type optical fiber connector plugs 25.
Wherein, this loopback optical fiber 24 comprises a U-shaped bending section 241 and two bare fibre sections 242.This two bare fibres section 242 is respectively in order to the input and output light signal, and this U-shaped bending section 241 can be decayed to the light signal energy that is transmitted, and different curvature radius bending section 241 can produce different attenuatings.
This optical fiber holding body 23 is integrally formed, and comprises an optic fibre carrier portion 231 and two optical fiber sleeve parts 232.These two optical fiber sleeve part, 232 each tool one central through holes (figure does not show), so that two bare fibre sections 242 of loopback optical fiber 24 by and accommodate the part of loopback optical fiber 24, and form a draw-in groove 235 respectively at these two optical fiber sleeve part, 232 front ends, cooperate to fix with two SC type optical fiber connector plugs 25.232 one-tenth step-like configurations of this optic fibre carrier portion 231 and optical fiber sleeve part, its upper surface and optical fiber sleeve part 232 axle center levels are with carrying U-shaped bending section 241.This optic fibre carrier portion 231 and 232 of this optical fiber sleeve parts be a junction 233 also with 232 one-tenth step-like settings of optical fiber sleeve part, and its upper surface is a little more than the upper surface of this optic fibre carrier portion 231.This connecting portion 233 has two guide channels 234 with two optical fiber sleeve parts, 232 central through holes collimation, to guide the central through hole that this loopback optical fiber inserts this two optical fiber sleeve part 232 thus.In addition, these optic fibre carrier portion 231 center sections form a pilot hole 230 in addition.
The base 22 of this ring type fixed optical attenuator 2 comprises the body of wall 221 and U-shaped housing 222 that is arranged at its front end center section, and this body of wall 221 forms two holding slots 223 with housing 222.And this body of wall 221 all has the structure that cooperates SC type optical fiber connector plug 25 with the relative part of housing 222, to stablize this two SC type optical fiber connector plug 25 of fixing.This base 22 is from substrate rear end projection one reference column 220, to cooperate with the pilot hole 230 of optic fibre carrier portion 231 center sections and to pass this hole and realize the location.
The housing 222 of this base 22 has the draw-in groove 225 that cooperates with loam cake 21, and 21 of loam cakes have relative card key (figure does not show), and both slidably are clasped.Base 22 can be accommodated and fixed fiber holding body 23 and two optical fiber connector plugs 25 after fastening with loam cake 21.
Please answer with reference to shown in Figure 5, loopback optical fiber 24 two ends are inserted by two guide channels 234 of optical fiber holding body 23 respectively, and two bare fibre sections 242 of its end are stretched out from two optical fiber sleeve parts 232 respectively.This two bare fibres section 242 is accommodated and collimated to two standard SC type optical fiber connector plugs 25, and be clasped by the bayonet unit (figure does not show) and the draw-in groove 235 of optical fiber holding body 23 wherein.
After optical fiber holding body 23 and the assembling of two SC type optical fiber connector plugs 25 are finished, can be positioned in the base 22, wherein, accommodation space 224 is accommodated these optical fiber holding body 23, two holding slots 223 and is fixed a SC type optical fiber connector plug 25 respectively.Reference column 220 in the base 22 cooperates the pilot hole 230 that inserts these optical fiber holding body 23 rear ends, further to fix this optical fiber holding body 23.
So, can adjust the radius-of-curvature of loopback optical fiber 24 bending sections 241, when reaching required pad value, this bending section 241 is fixed on the carrier 231 of this optical fiber holding body 23 with epoxy resin according to predetermined pad value.Again loam cake 21 is fastened on the base 22, promptly finishes ring type fixed optical attenuator 2 of the present utility model.
The radius-of-curvature of the utility model ring type fixed optical attenuator U-shaped bending section can be passed through the pole adjustment of different curvature radius, and in adjustment process, two connector plugs difference termination one LASER Light Source and a power meter can be detected the light decay depreciation in real time.The mode that other the utility model ring type fixed optical attenuator U-shaped bending section can also twine multi-turn replaces, and can obtain different pad values equally.
Claims (16)
1. ring type fixed optical attenuator, it is characterized in that: it comprises the loopback optical fiber that is used to constitute light signal input and output loop, this loopback optical fiber is retained on the optical fiber holding body, and this optical fiber holding body cooperates with two optical fiber connector plugs, and is accommodated and fixing by base.
2. ring type fixed optical attenuator according to claim 1 is characterized in that: wherein this loopback optical fiber further comprises a U-shaped bending section, and this bending section has certain radius-of-curvature.
3. ring type fixed optical attenuator according to claim 1 is characterized in that: wherein this optical fiber holding body further comprises a carrier portion and two optical fiber sleeve parts.
4. ring type fixed optical attenuator according to claim 3 is characterized in that: this optical fiber holding body further comprises a junction, connects this carrier portion and this two optical fiber sleeve part, and this connecting portion is formed with two guide channels.
5. ring type fixed optical attenuator according to claim 3 is characterized in that: wherein this carrier portion and this two optical fiber sleeve part form a step body.
6. ring type fixed optical attenuator according to claim 3 is characterized in that: each tool one optical fiber through hole of this two optical fiber sleeve part wherein.
7. ring type fixed optical attenuator according to claim 3 is characterized in that: at least one draw-in groove of this two optical fiber sleeve part each tool of front end wherein can be clasped with this two optical fiber connector plug.
8. ring type fixed optical attenuator according to claim 1 is characterized in that: wherein this optical fiber holding body further comprises a pilot hole.
9. ring type fixed optical attenuator according to claim 3 is characterized in that: wherein this carrier portion further comprises a pilot hole.
10. ring type fixed optical attenuator according to claim 1 is characterized in that: wherein this base further comprises a reference column, can cooperate with this optical fiber holding body.
11. ring type fixed optical attenuator according to claim 1 is characterized in that: wherein this two optical fiber connector plug is a SC type optical fiber connector plug.
12. ring type fixed optical attenuator according to claim 1 is characterized in that: wherein this loopback optical fiber is fixed in this optical fiber holding body by epoxy resin.
13. ring type fixed optical attenuator according to claim 1 is characterized in that: wherein this base further comprises at least one body of wall, it is arranged at this base front center, and forms at least two holding slots on this base.
14. ring type fixed optical attenuator according to claim 1 is characterized in that: wherein this base further comprises a draw-in groove.
15. ring type fixed optical attenuator according to claim 1 is characterized in that: it further comprises a loam cake.
16. ring type fixed optical attenuator according to claim 15 is characterized in that: wherein this loam cake further comprises a card key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01257859 CN2529268Y (en) | 2001-11-05 | 2001-11-05 | Ring type fixed light attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01257859 CN2529268Y (en) | 2001-11-05 | 2001-11-05 | Ring type fixed light attenuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2529268Y true CN2529268Y (en) | 2003-01-01 |
Family
ID=33666541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01257859 Expired - Fee Related CN2529268Y (en) | 2001-11-05 | 2001-11-05 | Ring type fixed light attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2529268Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101160542B (en) * | 2005-04-19 | 2010-10-13 | Adc电信公司 | Loop back plug and method |
| CN102565961A (en) * | 2012-01-18 | 2012-07-11 | 安费诺光纤技术(深圳)有限公司 | Integrated optical attenuator |
| CN102749682A (en) * | 2012-07-13 | 2012-10-24 | 安费诺光纤技术(深圳)有限公司 | SC (Standard Connector) combined angle-sleeve connector kit with replaceable polarities |
| CN103605186A (en) * | 2013-11-28 | 2014-02-26 | 桂林聚联科技有限公司 | Optical fiber filter |
| CN109186825A (en) * | 2018-08-10 | 2019-01-11 | 哈尔滨工业大学（深圳） | A kind of optical fiber macrobend pressure sensor and its measuring system |
| CN110286448A (en) * | 2019-07-12 | 2019-09-27 | 爱普迪光通讯科技(深圳)有限公司 | A kind of optical fiber circuit device |
-
2001
- 2001-11-05 CN CN 01257859 patent/CN2529268Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101160542B (en) * | 2005-04-19 | 2010-10-13 | Adc电信公司 | Loop back plug and method |
| CN102565961A (en) * | 2012-01-18 | 2012-07-11 | 安费诺光纤技术(深圳)有限公司 | Integrated optical attenuator |
| CN102565961B (en) * | 2012-01-18 | 2013-11-27 | 安费诺光纤技术(深圳)有限公司 | Integrated optical attenuator |
| CN102749682A (en) * | 2012-07-13 | 2012-10-24 | 安费诺光纤技术(深圳)有限公司 | SC (Standard Connector) combined angle-sleeve connector kit with replaceable polarities |
| CN102749682B (en) * | 2012-07-13 | 2015-05-20 | 安费诺光纤技术(深圳)有限公司 | SC (Standard Connector) combined angle-sleeve connector kit with replaceable polarities |
| CN103605186A (en) * | 2013-11-28 | 2014-02-26 | 桂林聚联科技有限公司 | Optical fiber filter |
| CN109186825A (en) * | 2018-08-10 | 2019-01-11 | 哈尔滨工业大学（深圳） | A kind of optical fiber macrobend pressure sensor and its measuring system |
| CN109186825B (en) * | 2018-08-10 | 2021-02-02 | 哈尔滨工业大学（深圳） | Optical fiber macrobend pressure sensor and measuring system thereof |
| CN110286448A (en) * | 2019-07-12 | 2019-09-27 | 爱普迪光通讯科技(深圳)有限公司 | A kind of optical fiber circuit device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |