CN106468803A - A kind of bend-insensitive single-mode optical fiber - Google Patents
A kind of bend-insensitive single-mode optical fiber Download PDFInfo
- Publication number
- CN106468803A CN106468803A CN201610759063.4A CN201610759063A CN106468803A CN 106468803 A CN106468803 A CN 106468803A CN 201610759063 A CN201610759063 A CN 201610759063A CN 106468803 A CN106468803 A CN 106468803A
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- China
- Prior art keywords
- layer
- optical fiber
- covering
- bend
- sagging
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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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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
- G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
- G02B6/03633—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - -
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The present invention relates to a kind of bend-insensitive single-mode optical fiber, belong to sensing technical field of optical fiber, include sandwich layer, sink covering and surrounding layer, it is characterized in that a diameter of 5 ~ 7 μm of described sandwich layer, relative index of refraction is 0.88 0.94%, and described sagging covering closely coats sandwich layer, is the sagging covering of multilamellar, the total one-sided thickness of sagging covering is 6 ~ 10 μm, and relative index of refraction is 0.05 ~ 0.1%；Described surrounding layer is pure silicon dioxide surrounding layer.The invention has the beneficial effects as follows：The sagging covering of setting multilamellar makes optical fiber possess excellent bending resistance, is preferably applied to fibre optic hydrophone industry etc..Fiber manufacturing cost of the present invention is relatively low, is suitable for batch production.
Description
Technical field
The present invention relates to a kind of bend-insensitive single-mode optical fiber, belong to sensing technical field of optical fiber, be particularly useful for optical fiber
Hydrophone component.
Background technology
Fibre optic hydrophone is a kind of underwater signal sensor on optical fiber, optoelectronic technology base for foundation.It passes through
Highly sensitive optical coherence detection, underwater sound vibration is converted into optical signal, reaches signal processing system extraction sound by optical fiber
Signal message.It has the features such as sensitivity is high, and good frequency response, suitable long-distance large-range are monitored.
The bending diameter that the telecommunication optical fiber being usually used and common G.657 bend insensitive fiber enclose in 10mm@200
Under, macrobending loss is more than 1dB it is impossible to meet transmission and the sensing requirements of fibre optic hydrophone.
Content of the invention
The technical problem to be solved is that overcoming the shortcomings of that prior art exists provides a kind of bending property good
Good bend-insensitive single-mode optical fiber.
The present invention is that the adopted technical scheme that solves the above problems is：Include sandwich layer, sink covering and surrounding layer, its
It is characterised by a diameter of 5 ~ 7 μm of described sandwich layer, relative index of refraction is 0.88-0.94%, described sagging covering closely coats core
Layer, is the sagging covering of multilamellar, and the total one-sided thickness of sagging covering is 6 ~ 10 μm, and relative index of refraction is -0.05 ~ -0.1%；Described
Surrounding layer be pure silicon dioxide surrounding layer.
By such scheme, the sagging layer number of the sagging covering of described multilamellar is 2 ~ 5, the One-sided Widths of each sagging layer
For 1 ~ 2 μm.
By such scheme, a diameter of 60 μm, 80 μm or 125 μm of described surrounding layer.
By such scheme, described sandwich layer is the silica glass layer mixing germanium, Ge-doped molar concentration 10-22%, many
The sagging layer of the sagging covering of layer is the silica glass layer of fluorine doped, and the molar concentration of Fluorin doped is 10-22%.
By such scheme, at wavelength 1550nm, bending radius is that 10mm reaches around the macrobending loss of 200 circles to described optical fiber
0.1~0.001dB/km.
The invention has the beneficial effects as follows：The sagging covering of setting multilamellar makes optical fiber possess excellent bending resistance, preferably
It is applied to fibre optic hydrophone industry etc..Fiber manufacturing cost of the present invention is relatively low, is suitable for batch production.
Brief description
Fig. 1 is one embodiment of the invention relative index of refraction generalized section.
Specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
In the embodiment of the present invention, sagging covering bend-insensitive single-mode optical fiber more than one kind is provided, includes sandwich layer a, sink
Covering b and surrounding layer c, a diameter of 6 μm of described sandwich layer, relative index of refraction is 0.92%, and described sagging covering sink for multilamellar
Covering, the total one-sided thickness of sagging covering is 6 μm, and relative index of refraction is -0.1%, and described sagging covering is 3, and each sink
The One-sided Widths of covering are 1 μm, each sagging covering equi-spaced apart.Described surrounding layer is pure silicon dioxide surrounding layer, surrounding layer
A diameter of 80 μm.
Described sandwich layer is the silica glass layer mixing germanium, Ge-doped molar concentration 10-22%, and multilamellar is sunk covering
Sagging layer be fluorine doped silica glass layer, the molar concentration of Fluorin doped is 10-22%.
Claims (5)
1. a kind of bend-insensitive single-mode optical fiber, includes sandwich layer, sink covering and surrounding layer it is characterised in that institute
State sandwich layer a diameter of 5 ~ 7 μm, relative index of refraction is 0.88 ~ 0.94%, and described sagging covering closely coats sandwich layer, is
Multilamellar is sunk covering, and the total one-sided thickness of sagging covering is 6 ~ 10 μm, and relative index of refraction is -0.05 ~ -0.1%；Described outsourcing
Layer is pure silicon dioxide surrounding layer.
2. bend-insensitive single-mode optical fiber according to claim 1 is it is characterised in that described multilamellar is sunk under covering
Sunken layer number is 2 ~ 5, and the One-sided Widths of each sagging layer are 1 ~ 2 μm.
3. bend-insensitive single-mode optical fiber according to claim 1 and 2 it is characterised in that described surrounding layer a diameter of
60 μm, 80 μm or 125 μm.
4. bend-insensitive single-mode optical fiber according to claim 1 and 2 is it is characterised in that described sandwich layer is mix germanium two
Silicon oxide glass layers, Ge-doped molar concentration 10-22%, multilamellar sink covering sagging layer be fluorine doped silica glass
Layer, the molar concentration of Fluorin doped is 10-22%.
5. bend-insensitive single-mode optical fiber according to claim 1 and 2 is it is characterised in that described optical fiber is in wavelength 1550nm
Place, bending radius is that 10mm reaches 0.1 ~ 0.001dB/km around the macrobending loss of 200 circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610759063.4A CN106468803A (en) | 2016-08-30 | 2016-08-30 | A kind of bend-insensitive single-mode optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610759063.4A CN106468803A (en) | 2016-08-30 | 2016-08-30 | A kind of bend-insensitive single-mode optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106468803A true CN106468803A (en) | 2017-03-01 |
Family
ID=58230239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610759063.4A Pending CN106468803A (en) | 2016-08-30 | 2016-08-30 | A kind of bend-insensitive single-mode optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106468803A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718888A (en) * | 2009-11-06 | 2010-06-02 | 长飞光纤光缆有限公司 | Dispersion compensation fiber and module thereof |
| CN101738681A (en) * | 2010-01-20 | 2010-06-16 | 长飞光纤光缆有限公司 | High bandwidth multimode fiber |
| CN102243336A (en) * | 2011-07-25 | 2011-11-16 | 长飞光纤光缆有限公司 | Dispersion compensation fiber |
| CN104216044A (en) * | 2014-09-17 | 2014-12-17 | 长飞光纤光缆股份有限公司 | Low-attenuation bending insensitive single mode fiber |
-
2016
- 2016-08-30 CN CN201610759063.4A patent/CN106468803A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718888A (en) * | 2009-11-06 | 2010-06-02 | 长飞光纤光缆有限公司 | Dispersion compensation fiber and module thereof |
| CN101738681A (en) * | 2010-01-20 | 2010-06-16 | 长飞光纤光缆有限公司 | High bandwidth multimode fiber |
| CN102243336A (en) * | 2011-07-25 | 2011-11-16 | 长飞光纤光缆有限公司 | Dispersion compensation fiber |
| CN104216044A (en) * | 2014-09-17 | 2014-12-17 | 长飞光纤光缆股份有限公司 | Low-attenuation bending insensitive single mode fiber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170301 |