CN1052379A - Birefringence optical fibre by stress and porous structure - Google Patents
Birefringence optical fibre by stress and porous structure Download PDFInfo
- Publication number
- CN1052379A CN1052379A CN 89109223 CN89109223A CN1052379A CN 1052379 A CN1052379 A CN 1052379A CN 89109223 CN89109223 CN 89109223 CN 89109223 A CN89109223 A CN 89109223A CN 1052379 A CN1052379 A CN 1052379A
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- optical fiber
- stress
- micropore
- stressed zone
- fiber
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- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The present invention proposes a kind of new optical fiber structure: the arc stressed zone of in the covering of optical fiber, introducing micropore and annular or symmetry simultaneously.This optical fiber has the good characteristic of high birefringence optical fiber and glass/metal optical fiber simultaneously concurrently, and light can be protected inclined to one side transmission after rising partially in optical fiber.Utilize this optical fiber might make optical active fiber and passive devices such as polarizing coupler, single polarization laser.This optic fibre manufacture process is simple, utilizes domestic existing optical fiber fabrication technology, need not to add in addition the special equipment rate height that just can manufacture a finished product, and cost is lower.
Description
The present invention relates to optical fiber technology.
Along with developing rapidly of optical-fibre communications and optical fiber sensing technology, people have developed diversified optical fiber.Wherein stress type high birefringence optical fiber and glass/metal optical fiber have many crucial application.At present, the stress type high birefringence optical fiber of comparative maturity has panda optic fibre and tie fiber in the world, they all are the stressed zones of having introduced non-garden symmetry in the geometry of common garden symmetry, directly produce asymmetric stress distribution, thereby have formed birefringence.But all difficult control such as their complex manufacturing technology, the shape of stressed zone, size, position etc., and prefabricated rods is easy to " bursting ", yield rate is low, and price is more expensive.Glass/metal optical fiber is actually and digs a hole in the covering of general single mode fiber, injects metal then in the hole, and its manufacture craft is quite simple, but it does not have the high birefringence characteristic, has limited its application to a great extent.
The object of the present invention is to provide a kind of stress type high birefringence optical fiber that can overcome above-mentioned optical fiber shortcoming.
The present invention is achieved in that and introduces micropore and garden annular or symmetrical arc stressed zone simultaneously in the covering of optical fiber.Stress riser comes from annulus or the arch area with high expansion coefficient, birefringence or directly come from the stressed zone of non-garden symmetry, or come from the introducing of the micropore of non-garden symmetry indirectly.Suitably select thickness, position and the expansion coefficient of stressed zone, can obtain high birefringence.
Belt stress district, garden of the present invention can be interior ring type (stressed zone is between micropore and fuse), external circular type (micropore is between fuse and stressed zone), or polycycle.Except garden annular or arc, the stressed zone can also adopt other shape.The shape of micropore can be a D shape, also can be garden shape, can also be other shape.Also can in the covering of optical fiber, introduce two micropores symmetrically.
The present invention has very high birefringent characteristic, and protecting bias can be good.Because the present invention introduces micropore and stressed zone simultaneously, thereby have the advantage of general high birefringence optical fiber and glass/metal optical fiber concurrently, of many uses, as in micropore, injecting low-melting-point metal Ga, Ia etc., can make the polarizer, phase-shifters etc. also might be made panda type, bow-tie fiber is difficult to make optical fiber passive and active devices such as the polarizing coupler of merit, single polarization laser.It is simple to make technology of the present invention.Under existing process conditions of China and appointed condition, need not to add in addition specific installation and just can produce, and the yield rate height, cost is lower.
The invention will be further described below in conjunction with accompanying drawing.
Accompanying drawing one, a kind of structure of the present invention (external circular type)
Accompanying drawing two, another kind of structure of the present invention (stressed zone is the arc of symmetry)
With reference to figure one, in fuse (1) covering (2) very nearby, digging a D shape hole (3), the belt stress district (4) of a high thermal expansion coefficient is introduced in the outside of hole (3).
Claims (1)
1, a kind of high birefringence optical fiber is characterized in that containing simultaneously in the covering (2) of optical fiber micropore (3) and garden annular or symmetrical arc stressed zone (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89109223 CN1052379A (en) | 1989-12-09 | 1989-12-09 | Birefringence optical fibre by stress and porous structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89109223 CN1052379A (en) | 1989-12-09 | 1989-12-09 | Birefringence optical fibre by stress and porous structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1052379A true CN1052379A (en) | 1991-06-19 |
Family
ID=4857916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89109223 Pending CN1052379A (en) | 1989-12-09 | 1989-12-09 | Birefringence optical fibre by stress and porous structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1052379A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242348A (en) * | 2015-11-10 | 2016-01-13 | 长飞光纤光缆股份有限公司 | Twisted optical fiber and manufacturing method thereof |
-
1989
- 1989-12-09 CN CN 89109223 patent/CN1052379A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242348A (en) * | 2015-11-10 | 2016-01-13 | 长飞光纤光缆股份有限公司 | Twisted optical fiber and manufacturing method thereof |
| CN105242348B (en) * | 2015-11-10 | 2018-01-12 | 长飞光纤光缆股份有限公司 | A kind of twisted fiber and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |