CN103376509A - Attenuator - Google Patents
Attenuator Download PDFInfo
- Publication number
- CN103376509A CN103376509A CN2012101273543A CN201210127354A CN103376509A CN 103376509 A CN103376509 A CN 103376509A CN 2012101273543 A CN2012101273543 A CN 2012101273543A CN 201210127354 A CN201210127354 A CN 201210127354A CN 103376509 A CN103376509 A CN 103376509A
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- China
- Prior art keywords
- attenuator
- input end
- fusion point
- welding
- consumption
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- 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.)
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- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses an attenuator. The attenuator is formed by a plurality of sections of optical fibers in a welding mode, and welding point consumption among the optical fibers are gradually increased from an input end to an output end. According to the technical scheme, the consumption of the welding points is increased from the input end to the output end. Due to the fact the power of the input end is large, and a welding point in low consumption is adopted at the input end to ensure that heat quantity is low. The power is reduced to be within a certain range through a series of attenuation processes at the front end, then the consumption of the welding points is increased, at the moment heat quantity generated at the welding points is low, and the heat quantity is insufficient to damage the welding points.
Description
Technical field
The present invention relates to the spectrum test field, especially high-capacity optical fiber laser, fiber amplifier, and the spectrum test of high power pump light source.
Background technology
For general spectrometer, the performance number of input light allows in the hundreds of milliwatt at most, therefore the spectrum test of power light source accesses spectrometer after needing first output light to be decayed again, the attenuator of commonly using at present, all need to connect by joint, there is following problem in this structure: 1. burn out easily the joints of optical fibre, or burn out the connector of attenuator; 2 a large amount of heats enter attenuator, cause easily the damage of attenuator; 3. shank has the part reflected light and reflects into into light source, might cause the damage of light source.
Summary of the invention
The objective of the invention is to be directed to the problem that prior art exists, provide a kind of cost lower, loss is little, and reflected light is little, can effectively protect the attenuator of light source.
Attenuator of the present invention comprises a kind of attenuator, and described attenuator forms by plural number section fused fiber splice, and the fusion point loss between each optical fiber increases gradually from input end to output terminal.
The present invention is owing to adopt above technical scheme, and each fusion point loss increases from the input end to the output terminal gradually, because the power of input end is larger, thereby this place adopts the less fusion point of loss to guarantee that heat is less; Until by a series of decay of front end, power is reduced within the certain limit, strengthen again the loss of fusion point, the heat that produce at the fusion point place this moment is less, is not enough to cause the damage of fusion point.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
For the benefit of attenuator of the present invention is done further to understand, describe below in conjunction with drawings and Examples.
With reference to shown in Figure 1, attenuator of the present invention forms by 3 weldings of plural number section optical fiber, forms fusion point 2 between each optical fiber 3, and fusion point 2 losses of 3 of each optical fiber increase gradually from input end to output terminal.Select the optical fiber 3 that is complementary with light source 1 output at input end, and link to each other with light source output in the mode of welding, the loss of this first fusion point 2 is as far as possible little, avoids producing too high heat or light echo at this point with this; Keep the optical fiber 3 about 30 centimetres after first fusion point 2, then with same type optical fiber 3 weldings of about 30 centimetres of another sections, form second fusion point 2, the loss of this fusion point 2 is slightly larger than first fusion point 2; In this way, continue to make follow-up each fusion point 2, and keep the loss of each point to be slightly larger than previous fusion point 2; What fusion points of actual needs 2 can adopt the mode of limit welded edge test output power to decide, until can satisfy the input requirements of spectrometer; Last fusion point back needs one section long conventional fiber of welding, in order to use naked fine adapter access spectrometer input end 4.
Attenuator of the present invention is compared with conventional attenuator, and cost is lower; Input end adopts the welding mode, and loss is little, and reflected light is little, can effectively protect light source; Each fusion point loss increases from the input end to the output terminal gradually, so just makes when power is higher, and loss is less, thereby the heat of fusion point is less; Until by a series of decay of front end, power is reduced within the certain limit, strengthen again the loss of fusion point, the heat that produce at the fusion point place this moment is less, is not enough to cause the damage of fusion point; Can adjust according to the size of actual light source output power the overall losses of attenuating device, meet the different needs.
Claims (1)
1. an attenuator it is characterized in that described attenuator forms by plural number section fused fiber splice, and the fusion point loss between each optical fiber increases gradually from input end to output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101273543A CN103376509A (en) | 2012-04-27 | 2012-04-27 | Attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101273543A CN103376509A (en) | 2012-04-27 | 2012-04-27 | Attenuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103376509A true CN103376509A (en) | 2013-10-30 |
Family
ID=49461892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101273543A Pending CN103376509A (en) | 2012-04-27 | 2012-04-27 | Attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103376509A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914518A (en) * | 2014-03-14 | 2015-09-16 | 浜松光子学株式会社 | Semiconductor laser module, semiconductor laser light source and semiconductor laser system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202794594U (en) * | 2012-03-26 | 2013-03-13 | 上海科乃特激光科技有限公司 | Laser attenuating device |
-
2012
- 2012-04-27 CN CN2012101273543A patent/CN103376509A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202794594U (en) * | 2012-03-26 | 2013-03-13 | 上海科乃特激光科技有限公司 | Laser attenuating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104914518A (en) * | 2014-03-14 | 2015-09-16 | 浜松光子学株式会社 | Semiconductor laser module, semiconductor laser light source and semiconductor laser system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20151111 Address after: 201400, Shanghai, Fengxian District South Village Road, No. 52 Applicant after: Shanghai Connet Fiber Optics Company Limited Address before: No. 951 Shanghai Minhang District city comprehensive business building 200240 Jianchuan Road 1 room 1086 Applicant before: Shanghai Kenaite Laser Technology Co., Ltd. |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131030 |