CN202939327U - Adjustable optical power splitter and amplifier thereof - Google Patents
Adjustable optical power splitter and amplifier thereof Download PDFInfo
- Publication number
- CN202939327U CN202939327U CN 201220096159 CN201220096159U CN202939327U CN 202939327 U CN202939327 U CN 202939327U CN 201220096159 CN201220096159 CN 201220096159 CN 201220096159 U CN201220096159 U CN 201220096159U CN 202939327 U CN202939327 U CN 202939327U
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- CN
- China
- Prior art keywords
- luminous power
- light path
- power divider
- amplifier
- adjustable luminous
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Abstract
The utility model provides an adjustable optical power splitter and an amplifier thereof. The adjustable optical power splitter comprises an input polarization maintaining optical fiber, two output ends and optical power splitter components. The adjustable optical power splitter is characterized in that the angle of a polarized light fast and slow axis of the input polarization maintaining optical fiber is rotated, and light is coupled to the two output ends through a polarized light splitter so as to be outputted. According to the utility model, a simple optical path structure is adopted, and the optical power splitter can be adjusted randomly through rotating the angle of the polarized light fast and slow axis of the input polarization maintaining optical fiber. The adjustable optical power splitter can be widely applied to multistage amplifiers and array amplifiers.
Description
Technical field
The utility model relates to adjustable luminous power divider, and particularly a kind of miniaturization adjustable luminous power divider, be applied to amplifier region.
Background technology
At existing optical communication network, EDFA (Erbium-Doped Fiber Amplifier (EDFA)) uses the via node at the WDM network, comprises that light is cross-linked and the light up/down is multiplexing.In order to satisfy the demand of existing optical-fiber network, the application of EDFA array is absolutely necessary.
And the EDFA array needs a pumping to distribute to a plurality of EDFA uses, this just needs the luminous power distributor to satisfy, or a plurality of amplifier stages (Stage) in single EDFA, need to share a pumping, in the EDFA arrayed applications, dynamic change can occur in the input optical power of each EDFA amplifier, and for the highest needed pump power of utilization factor that makes pumping also needs to carry out corresponding dynamic change, this just needs the adjustable optical branching device of splitting ratio; In like manner, a plurality of amplifier stages in single EDFA share the application scenario of a pump, need to use optical splitter that pump power is assigned to the front and back amplifier stage in proportion. in order to optimize the performance of amplifier under certain pump general power condition, under the condition of varying input signal luminous power, need to use different splitting ratios.
The utility model content
Given this, for these deficiencies of existing adjustable luminous power divider, it is a kind of simple in structure that the utility model provides, the adjustable luminous power divider of miniaturization.
The utility model provides a kind of adjustable luminous power divider, comprise an input polarization maintaining optical fibre, two output terminals and optical power distribution devices thereof, it is characterized in that: input the angle of the polarized light fast and slow axis of polarization maintaining optical fibre by rotation, then be coupled to two output terminal outputs through polarizing beam splitter.
Wherein, preferred version is: described polarizing beam splitter is crystal polarization beam apparatus, wollaston prism or polarization beam splitting PBS cube.
Wherein, preferred version is: the element of described rotation input polarization maintaining optical fibre is step motor.
Wherein, preferred version is: described input polarization maintaining optical fibre and lens combination become collimator of PMF.
the utility model also comprises a kind of amplifier that comprises adjustable luminous power divider, it is characterized in that: the light beam of total pump light source output is divided into two-way via described adjustable luminous power divider, described two-way connects respectively two described adjustable luminous power dividers the total pump light source is divided into four the tunnel, N described adjustable luminous power divider is told N road light path, the first light path, the second light path .... the N light path connects respectively the first amplifier, the second amplifier ... N amplifier, the ratio of regulating its every road luminous power by regulating described adjustable luminous power divider distributes.
the utility model also comprises a kind of amplifier that comprises adjustable luminous power divider, it is characterized in that: the light beam of total pump light source output is divided into the first light path and the second light path via described adjustable luminous power divider, the first light path is connected with first order amplifier, the second light path connects second adjustable luminous power divider and is divided into Third Road light path and the four tunnel light path, the Third Road light path is connected with second level amplifier ... N road light path is by N adjustable luminous power divider connection, N road light path connects with N level amplifier, use different splitting ratios to optimize the performance of amplifier by described adjustable luminous power divider.
Protect the angle of polarisation fast and slow axis because the utility model adopts the rotation polarization maintaining optical fibre, thereby a kind of flexible adjustment is provided, the adjustable luminous power divider of miniaturization can be widely used in the image intensifer field.
Description of drawings
Below in conjunction with accompanying drawing, embodiment of the present utility model is further illustrated:
Fig. 1 is the index path of the utility model adjustable luminous power divider the first embodiment.
Fig. 1 a is that the luminous power of the utility model adjustable luminous power divider is distributed schematic diagram.
Fig. 2 is the structural representation that the utility model adjustable luminous power divider 20 is applied to the EDFA array of 1*4.
Fig. 3 is the light channel structure that the utility model adjustable luminous power divider 20 is applied to the multistage amplifier stage device in single EDFA.
Embodiment
Below in conjunction with accompanying drawing, the utility model adjustable luminous power divider is described further.
Fig. 1 is the index path of the utility model adjustable luminous power divider the first embodiment, as shown in Figure 1: luminous-power distributor 20 comprises that input polarization maintaining optical fibre 21, collimator of PMF 22, crystal optical splitter 23, roof prism 24 and twin-core collimating apparatus 25 form, the linearly polarized light of light source 26 outputs is via polarization maintaining optical fibre 21 inputs, by the two-beam by crystal optical splitter 23 detached parallel, this two-beam meets at the two-way that any is coupled into twin-core collimating apparatus 25 under the refraction of roof prism 24 by collimator of PMF 22 outgoing.As shown in Figure 1a: supposition input light is linearly polarized light, and the angle of the x axle of its polarization direction and crystal optical splitter 23 is θ
0, by the collimator of PMF 22 of step motor 221 rotations with polarization maintaining optical fibre, the input light polarization direction rotates to be and x axle degree into θ angle, and namely input polarization is rotated (θ-θ
0), suppose that the splitting ratio of those two output terminals of twin-core collimating apparatus 25 of crystal optical splitter 23 is for (ignoring the Insertion Loss that is caused by coupling efficiency and spillage of material):
I
1＝I
0*cos
2θ
I
2=I
0* sin
2θ=I
0* (1-cos
2θ), I
0Be the light intensity of incident light, the x axle that rotates the collimator of PMF anglecs of rotation and crystal optical splitter 23 when step motor 221 becomes θ, and in the twin-core collimating apparatus, the light intensity of two-way light also changes thereupon, thereby has realized the variation of splitting ratio.
Wherein, described polarizing beam splitter is crystal polarization beam apparatus, wollaston prism or polarization beam splitting PBS cube.
Wherein, the element of described rotation input collimating apparatus is step motor.
Due to the simple light channel structure of the utility model, realize that by the rotation polarization maintaining optical fibre luminous-power distributor is adjustable arbitrarily.
Fig. 2 is the structural representation that the utility model adjustable luminous power divider 20 is applied to the amplifier array of 1*4.As shown in Figure 2: the light beam of total pump light source 30 outputs is divided into the first light path and the second light path via adjustable luminous power divider 20, described the first light path be connected light path and connect respectively two adjustable luminous power dividers 20 and will be divided into four the tunnel from the light beam of total pump light source 30 output and connect respectively EDFA1, EDFA2, EDFA3 and EDFA4, the like, N adjustable luminous power divider 20 connects N EDFAN, regulate its every road luminous power arbitrary ratio by three adjustable luminous power dividers 20 and distribute, thereby make the utilization factor of total pump light source 30 the highest.
Fig. 3 is the light channel structure that the utility model adjustable luminous power divider 20 is applied to multistage amplifier stage device, as shown in Figure 3: the light beam of total pump light source 40 outputs is divided into the first light path and the second light path via adjustable luminous power divider 20, the first light path is connected connection with first order amplifier, the second light path be connected an adjustable luminous power divider 20 and connect and be divided into Third Road and be connected connection with second level amplifier, the four the tunnel be connected adjustable luminous power divider 20 and connect, the like, N adjustable luminous power divider 20 is divided into N+1 road connects with N level amplifier.By under the condition of varying input signal luminous power, use different splitting ratios by adjustable luminous power divider 20, thereby optimize the performance of amplifier.
Due to the utility model by rotation polarization maintaining optical fibre polarized light fast and slow axis angle, thereby a kind of flexible adjustment is provided, the adjustable luminous power divider of miniaturization can be widely used in the image intensifer field.
Although specifically introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection domain of the present utility model.
Claims (6)
1. adjustable luminous power divider, comprise an input polarization maintaining optical fibre, two output terminals and optical power distribution devices thereof, it is characterized in that: input the angle of the polarized light fast and slow axis of polarization maintaining optical fibre by rotation, then be coupled to two output terminal outputs through polarizing beam splitter.
2. adjustable luminous power divider according to claim 1, it is characterized in that: polarizing beam splitter is crystal polarization beam apparatus, wollaston prism or polarization beam splitting PBS cube.
3. adjustable luminous power divider according to claim 1 is characterized in that: the element of described rotation input polarization maintaining optical fibre is step motor.
4. according to claim 1 and 2 or 3 described adjustable luminous power dividers, it is characterized in that: described input polarization maintaining optical fibre and lens combination become collimator of PMF.
5. array image intensifer that comprises adjustable luminous power divider as claimed in claim 1, it is characterized in that: the light beam of total pump light source output is divided into two-way via this adjustable luminous power divider, described two-way connects respectively two these adjustable luminous power dividers the total pump light source is divided into four the tunnel, N this adjustable luminous power divider is told N road light path, the first light path, the second light path .... the N light path connects respectively the first amplifier, the second amplifier ... N amplifier, the ratio of regulating its every road luminous power by regulating described adjustable luminous power divider distributes.
6. multistage optical amplifier that comprises adjustable luminous power divider as claimed in claim 1, it is characterized in that: the light beam of total pump light source output is divided into the first light path and the second light path via this adjustable luminous power divider, the first light path is connected with first order amplifier, the second light path connects second adjustable luminous power divider and is divided into Third Road light path and the four tunnel light path, the Third Road light path is connected with second level amplifier ... N road light path is by N adjustable luminous power divider connection, N road light path connects with N level amplifier, use different splitting ratios to optimize the performance of amplifier by this adjustable luminous power divider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220096159 CN202939327U (en) | 2012-03-14 | 2012-03-14 | Adjustable optical power splitter and amplifier thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220096159 CN202939327U (en) | 2012-03-14 | 2012-03-14 | Adjustable optical power splitter and amplifier thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939327U true CN202939327U (en) | 2013-05-15 |
Family
ID=48323558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220096159 Expired - Fee Related CN202939327U (en) | 2012-03-14 | 2012-03-14 | Adjustable optical power splitter and amplifier thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022110888A1 (en) * | 2020-11-26 | 2022-06-02 | 华为技术有限公司 | Optical splitter having adjustable optical splitting ratio, fiber access terminal box, and optical distribution network |
-
2012
- 2012-03-14 CN CN 201220096159 patent/CN202939327U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022110888A1 (en) * | 2020-11-26 | 2022-06-02 | 华为技术有限公司 | Optical splitter having adjustable optical splitting ratio, fiber access terminal box, and optical distribution network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130515 Termination date: 20190314 |