CN2212210Y - Rectangular like polarization holding optical fiber - Google Patents
Rectangular like polarization holding optical fiber Download PDFInfo
- Publication number
- CN2212210Y CN2212210Y CN 95243466 CN95243466U CN2212210Y CN 2212210 Y CN2212210 Y CN 2212210Y CN 95243466 CN95243466 CN 95243466 CN 95243466 U CN95243466 U CN 95243466U CN 2212210 Y CN2212210 Y CN 2212210Y
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- CN
- China
- Prior art keywords
- optical fiber
- rectangular
- holding optical
- fibre core
- polarization holding
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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.)
- Expired - Fee Related
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- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The utility model provides the novel structural form of polarization holding optical fiber. From the cross section structure of the utility model looked at, the utility model is characterized in that a stress element is the rectangular polarization holding optical fiber; the rectangular polarization holding optical fiber is the improvement of three structural forms of the cravat form, the panda form and the elliptical cladding form of the existing polarization holding optical fiber. So parameter h is optimized and enhanced by one magnitude stage on average, antijamming capability is enhanced, and temperature stability is improved.
Description
The utility model belongs to the coherent fiber communication field.Or rather, be a kind of coherent fiber sensor that can be used for, the volume in fields such as fibre optic gyroscope and the fibre optic hydrophone maintenance optical fiber that shakes.
At present, compiling shakes keeps optical fiber by its cross-section structure shape branch, and what practicality was stronger has three types: " knot type " (Fig. 1) " panda type " (Fig. 2) and " oval cladding type " (Fig. 3).Because the geometric configuration of these three types of its fibre cores and stress unit and mutual alignment are in non-steady state (SS) on mechanical relationship, be not a kind of uniform stress field in core region, thereby difficultly obtain to lie prostrate different h parameter.In addition, produce bigger double refraction amount, the stress unit of existing polarization-maintaining fiber all must have enough big area.For example, the stress elemental area of " panda type " optical fiber must be greater than 20% with the ratio of the total area, and this just causes SiO
2The relative attenuation of filler shell finally causes this polarization-maintaining fiber mechanical disturbance factor sensitivity to external world, does not have good temperature performance.
The utility model is to select a kind of ideal geometry, makes fibre core and stress unit be in steady state (SS) on mechanical relationship, forms the uniform stress field in core region, thereby obtains excellent h parameter; Simultaneously, can keep reducing the occupancy volume of stress elemental area under the identical amount of refraction situation again, thereby improve mechanism stable and the good a kind of polarization-maintaining fiber of temperature performance.
The utility model is finished as follows: from cross section structure, it is square adopting fibre core, and stress unit is a kind of polarization-maintaining fiber of class rectangle.Specifically, one by SiO
2With GeO
2Constitute the tetragonal prism fibre core 1 of even hybrid solid-state, its straight plane two sides two class rectangle column stress units 2 parallel with the fibre core cylinder that distribute are symmetrically surrounded by the inner cladding 3 that is made of silicon, phosphorus, fluorine hybrid solid-state, are in by SiO
2Fill the centre that right cylinder is a surrounding layer 4 for uniform filling, its skin is made of coating 5.
Accompanying drawing 1 is " knot type " cross section structure synoptic diagram.
Accompanying drawing 2 is " panda type " cross section structure synoptic diagram.
Accompanying drawing 4 is the utility model cross section structure shape figure.
Below enforcement of the present utility model is described further:
With the hydrofluorite dip of quartz ampoule, use deionized water rinsing, because hot nitrogen dries up with dilution.Sandwich glass work lathe, mix up concentricity.Feed fluorine 12, polish.Then, under fluorine, phosphorus, silicon combination ingredient, the deposition surrounding layer.Continue it, orientated deposition stressor layers under boron, silicon combination ingredient is carried out directional etch at other direction again.After, make sedimentary inner envoloping layer under fluorine, phosphorus, the silicon combination ingredient and under germanium, silicon combination ingredient, making the deposition sandwich layer.At last, under temperature more than 2000 ℃, keep certain negative pressure in the pipe, heat-treat.Because fibre core, inner cladding, its softening temperature of material of stressor layers and the difference of viscosity are handled through different time by different temperatures, interior pressure, it is square just having formed the section fibre core, and stress unit is the class rectangle, and the outer warp of covering is circular polarization maintaining optical fiber preformed.This prefabricated component is put on the wire drawing machine, carried out conventional wire drawing.And make double-deck coated with uv curing coating and handle.Produced guarantor compiles optical fiber with above-mentioned way, and there are comparatively ideal geometric configuration in its fibre core and stress unit, and excellent h parameter is arranged.
After adopting the utility model,, obvious breakthrough is arranged aspect technical indicator than the polarization-maintaining fiber of original three kinds of versions.As the h parameter by originally on average less than 1 * 10
-5/ rice is brought up to less than 2 * 10
-6/ rice improves nearly order of magnitude.In addition, because the optimization of stress unit and core shape, the transmission of stress is more effective, only needs " panda type " structure 1/4th stress elemental areas just to be enough to produce suitable substantially birefringence.In other words, " rectangular like type " structure has quite thick SiO
2Shell, this has just guaranteed good temperature characterisitic and anti-external interference performance.
Claims (1)
1, a kind of rectangular like type polarization-maintaining fiber is made up of fibre core, stress unit, covering and coating, and the cross section structure that it is characterized in that the rectangular like type polarization-maintaining fiber is that fibre core is square, and stress unit is a kind of polarization-maintaining fiber of class rectangle:
One by SiO
2With CeO
2Constitute the tetragonal prism fibre core 1 of even hybrid solid-state, its straight plane two sides two class rectangle column stress units 2 parallel with the fibre core cylinder that distribute are symmetrically surrounded by the inner cladding 3 that is made of silicon, phosphorus, fluorine hybrid solid-state, are in by SiO
2Fill the centre that right cylinder is a surrounding layer 4 for uniform filling, its skin is made of coating 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95243466 CN2212210Y (en) | 1995-02-22 | 1995-02-22 | Rectangular like polarization holding optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95243466 CN2212210Y (en) | 1995-02-22 | 1995-02-22 | Rectangular like polarization holding optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2212210Y true CN2212210Y (en) | 1995-11-08 |
Family
ID=33884064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95243466 Expired - Fee Related CN2212210Y (en) | 1995-02-22 | 1995-02-22 | Rectangular like polarization holding optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2212210Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351415A (en) * | 2011-06-22 | 2012-02-15 | 武汉烽火锐光科技有限公司 | Manufacture method for polarization maintaining fiber and polarization maintaining fiber |
| CN108169845A (en) * | 2018-02-26 | 2018-06-15 | 江苏法尔胜光电科技有限公司 | Class rectangle panda type polarization-preserving fiber |
| CN110954987A (en) * | 2019-12-05 | 2020-04-03 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Elliptical core-bow-tie type single-polarization structure optical fiber and manufacturing method thereof |
| CN112388157A (en) * | 2012-10-19 | 2021-02-23 | 通快机床两合公司 | Laser cutting machine and method for cutting workpieces of different thicknesses |
| WO2023081039A1 (en) * | 2021-11-03 | 2023-05-11 | Corning Research & Development Corporation | Optical fiber ribbon configured to maintain orientation of polarization-maintaining and multicore optical fibers |
-
1995
- 1995-02-22 CN CN 95243466 patent/CN2212210Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351415A (en) * | 2011-06-22 | 2012-02-15 | 武汉烽火锐光科技有限公司 | Manufacture method for polarization maintaining fiber and polarization maintaining fiber |
| CN112388157A (en) * | 2012-10-19 | 2021-02-23 | 通快机床两合公司 | Laser cutting machine and method for cutting workpieces of different thicknesses |
| CN108169845A (en) * | 2018-02-26 | 2018-06-15 | 江苏法尔胜光电科技有限公司 | Class rectangle panda type polarization-preserving fiber |
| CN110954987A (en) * | 2019-12-05 | 2020-04-03 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Elliptical core-bow-tie type single-polarization structure optical fiber and manufacturing method thereof |
| WO2023081039A1 (en) * | 2021-11-03 | 2023-05-11 | Corning Research & Development Corporation | Optical fiber ribbon configured to maintain orientation of polarization-maintaining and multicore optical fibers |
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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 |