CN201355396Y - Polarization maintaining fiber beam splitter - Google Patents
Polarization maintaining fiber beam splitter Download PDFInfo
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- CN201355396Y CN201355396Y CNU2009200367994U CN200920036799U CN201355396Y CN 201355396 Y CN201355396 Y CN 201355396Y CN U2009200367994 U CNU2009200367994 U CN U2009200367994U CN 200920036799 U CN200920036799 U CN 200920036799U CN 201355396 Y CN201355396 Y CN 201355396Y
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- polarization maintaining
- output
- optical fibre
- beam splitter
- maintaining optical
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Abstract
The utility model discloses a polarization maintaining fiber beam splitter based on binary optical beam splitters, which comprises an input polarization maintaining fiber, a binary optical beam splitter and one row or a plurality of rows output polarization maintaining fibers, wherein each row is provided with one or a plurality of output polarization maintaining fibers, a collimation lens is arranged between the input polarization maintaining fiber and a binary optical beam splitting device, and an output light beam convergent lens is arranged between the binary optical beam splitter and the output polarization maintaining fibers. The output light beam convergent lens is a big lens which can collect one row or a plurality of rows of polarization maintaining fibers, wherein each row is provided with one or a plurality of output polarization maintaining fibers. The quantity of the output light beam convergent lenses can be matched with the quantity of one row or a plurality of rows of output polarization maintaining fibers. The binary optical beam splitting device keeps the light beam polarization direction unchangeable in the process of dividing the input light beams into a plurality of beams. The polarization directions of the input polarization maintaining fiber and the output polarization maintaining fibers of the polarization maintaining fiber beam splitter based on binary optical beam splitters (polarization maintaining fiber coupler) can keep constant, and the polarization maintaining fiber beam splitter has the advantages of simple production method, excellent beam evenness, excellent polarization maintaining property, low production cost and the like.
Description
Technical field
The utility model relates to a polarization maintaining optical fibre beam splitter based on the binary optical beam splitter.
Background technology
1 * 2,1 * N, or the polarization maintaining optical fibre beam splitter of N * M has very important use at aspects such as optical fiber communication, instrument and equipment, sensor, biomedical instrument, gauging instruments.The production technology of the polarization maintaining optical fibre beam splitter of pure optical fiber is very complicated, it is very difficult drawing the polarization direction that keeps in the process of awl in a plurality of optical fiber all constant at polarization maintaining optical fibre, yield rate is very low, so the price of polarization maintaining optical fibre beam splitter or title polarization-maintaining fiber coupler is more much higher than the price of ordinary optic fibre coupling mechanism.The polarization maintaining optical fibre beam splitter of present pure optical fiber at most also is 1 * 3 or 3 * 3 branch way, can't manufacture the polarization maintaining optical fibre beam splitter more than the pure optical fiber of 3 road branch ways.Development along with Fibre Optical Communication Technology, as Fiber to the home, dense wave division multipurpose, dynamic fiber optic network etc., need divide the polarization maintaining optical fibre beam splitter product of way more than 3 the tunnel, and polarization maintaining optical fibre beam splitter product comes out cheaply, and the polarization maintaining optical fibre beam splitter of present pure optical fiber is with high price, its widespread use at optical fiber communication and other field that divided the serious obstruction of shortcomings such as way is few.
Summary of the invention
Technical problem to be solved in the utility model provides that a kind of price is low, the branch way is many, keep all constant and simple fiber optic splitter of production technology in polarization direction in a plurality of optical fiber in polarization maintaining optical fibre draws the process of awl.
For solving the problems of the technologies described above, a kind of polarization maintaining optical fibre beam splitter that the utility model provides, the output polarization maintaining optical fibre that comprises input polarization maintaining optical fibre, binary optical beam splitting device and row or multiple row, whenever show one or more output polarization maintaining optical fibre, be provided with collimation lens between described input polarization maintaining optical fibre and the binary optical beam splitting device, be provided with the output beam convergent lens between described binary optical beam splitting device and the output polarization maintaining optical fibre.
Described output beam convergent lens is the output polarization maintaining optical fibre that can assemble row or multiple row, whenever shows the big lens of one or more output polarization maintaining optical fibre.
The quantity that described output beam convergent lens quantity also can be with the row or the output polarization maintaining optical fibre of multiple row is complementary.
Described binary optical beam splitting device is a grating, and grating can be the Dammann grating.Binary optical beam splitting device also can be binary optical beam array generator.
Beneficial effect: a kind of polarization maintaining optical fibre beam splitter that the utility model provides can be for one the road to multichannel (1 * N), or multichannel is to multichannel (N * M).This polarization maintaining optical fibre beam splitter (polarization-maintaining fiber coupler) based on binary optical device keeps the polarization direction in a plurality of optical fiber all constant in polarization maintaining optical fibre draws the process of awl, it is simple to have production method, beam uniformity is good, protects advantages such as bias is good, has very low cost.
Description of drawings
Fig. 1 is first kind of structural representation of the present utility model;
Fig. 2 is second kind of structural representation of the present utility model;
Fig. 3 is the third structural representation of the present utility model;
Fig. 4 is the 4th a kind of structural representation of the present utility model;
Embodiment
Below in conjunction with accompanying drawing particular content of the present utility model is described further.
As shown in Figure 1, a kind of polarization maintaining optical fibre beam splitter, comprise input polarization maintaining optical fibre 10, binary optical beam splitting device 12 and output polarization maintaining optical fibre 14, be provided with collimation lens 11 between described input polarization maintaining optical fibre 10 and the binary optical beam splitting device 12, be provided with output beam convergent lens 13 between described binary optical beam splitting device 12 and the output polarization maintaining optical fibre 14.
As shown in Figure 2, described output beam convergent lens 13 can be the big lens 23 that can assemble many output polarization maintaining optical fibres 14 arranged side by side.
Described output beam convergent lens 13 quantity are complementary for the quantity with output polarization maintaining optical fibre 14, as Fig. 1 and Fig. 3-shown in Figure 4.
Described binary optical beam splitting device 12 is a grating.Described grating is the Dammann grating.
Described binary optical beam splitting device 12 is a binary optical beam array generator.
The number of input polarization maintaining optical fibre 10 and collimation lens 11 also can be not only a pair of, as shown in Figure 3.
Claims (6)
1, a kind of polarization maintaining optical fibre beam splitter, the output polarization maintaining optical fibre that comprises input polarization maintaining optical fibre, binary optical beam splitting device and row or multiple row, whenever show one or more output polarization maintaining optical fibre, it is characterized in that: be provided with collimation lens between described input polarization maintaining optical fibre and the binary optical beam splitting device, be provided with the output beam convergent lens between described binary optical beam splitting device and the output polarization maintaining optical fibre.
2, polarization maintaining optical fibre beam splitter according to claim 1 is characterized in that: described output beam convergent lens is the output polarization maintaining optical fibre that can assemble row or multiple row, whenever shows the big lens of one or more output polarization maintaining optical fibre.
3, polarization maintaining optical fibre beam splitter according to claim 1 is characterized in that: described output beam convergent lens quantity is complementary for the quantity with the output polarization maintaining optical fibre.
4, polarization maintaining optical fibre beam splitter according to claim 1 is characterized in that: described binary optical beam splitting device is a grating.
5, polarization maintaining optical fibre beam splitter according to claim 1 is characterized in that: described binary optical beam splitting device is a binary optical beam array generator.
6, polarization maintaining optical fibre beam splitter according to claim 4 is characterized in that: described grating is the Dammann grating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200367994U CN201355396Y (en) | 2009-02-25 | 2009-02-25 | Polarization maintaining fiber beam splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200367994U CN201355396Y (en) | 2009-02-25 | 2009-02-25 | Polarization maintaining fiber beam splitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355396Y true CN201355396Y (en) | 2009-12-02 |
Family
ID=41411738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200367994U Expired - Fee Related CN201355396Y (en) | 2009-02-25 | 2009-02-25 | Polarization maintaining fiber beam splitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201355396Y (en) |
-
2009
- 2009-02-25 CN CNU2009200367994U patent/CN201355396Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20110225 |