CN206248880U - A kind of photonic crystal fiber of negative dispersion high - Google Patents
A kind of photonic crystal fiber of negative dispersion high Download PDFInfo
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- CN206248880U CN206248880U CN201621331521.6U CN201621331521U CN206248880U CN 206248880 U CN206248880 U CN 206248880U CN 201621331521 U CN201621331521 U CN 201621331521U CN 206248880 U CN206248880 U CN 206248880U
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- negative dispersion
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Abstract
A kind of photonic crystal fiber of negative dispersion high, including base material, fibre core and the covering being centered around on the outside of fibre core are provided with base material, wherein covering is made up of several along optical fiber arranged radially and the circular airport that is parallel to each other, the covering includes several the 3rd airports being distributed along regular hexagon, the center of regular hexagon is provided with the first airport that two rows are parallel to each other, two base materials that ranked first between airport constitute fibre core；The second airport of several periodic arrangements is provided between the first airport and the 3rd airport；More than the aperture of the 3rd airport, the aperture of the 3rd airport is more than the aperture of the second airport in the aperture of first airport；Spacing between the adjacent airport axis of any two is equal.The utility model provides a kind of photonic crystal fiber of negative dispersion high, negative dispersion high and low confinement loss characteristic is presented in whole C-band, it is adaptable to broadband chromatic dispersion compensation.
Description
Technical field
The utility model is related to a kind of photonic crystal fiber, specifically a kind of photonic crystal fiber of negative dispersion high.
Background technology
Photonic crystal fiber Photonic Crystal Fibers, PCF are based on fiber core defect area and along fiber axis
Constituted to the airport of the presentation periodic arrangement on cladding cross section, it has the abnormal color in near-infrared and visible waveband
Scattered, extremely strong birefringence, endless single mode, relatively low loss, non-thread characteristic high, controllable pattern area, the multicore of easily drawing
The unique optical property of the characteristics such as structure.Dispersion causes for the light wave of different frequency in same Propagation speed difference
Pulse stretching, seriously limits transmission rate.The most efficient method that fibre-optical dispersion is reduced in optical communication system is to carry out color
Dissipate compensation.PCF research work is goed deep into based on researcher, finds the characteristic of PCF, can be by adjusting photonic crystal light
Fine microstructure parameters are flexibly adjusted.
In recent years, dispersion compensating fiber had also obtained extensive research report.M. Asiful lslam etc. devise one kind
Full-internal reflection type anise photonic crystal fiber, in the range of wavelength 1460-1625nm, negative dispersion is -400 ~ -725 pskm-1·nm-1.M. Mejbaul Haque etc. propose broadband chromatic dispersion compensation optical fiber, the negative dispersion at 1.55 μm of wavelength for-
790 ps·km-1·nm-1.It is vertical it is superfine devise a kind of octagon PCF as dispersion compensating fiber, at 1.55 μm of wavelength
Negative dispersion can reach -1434.9 pskm-1·nm-1.Zhang Yani devises a kind of hexagonal lattice PCF, in 1.55 μm of wavelength
The negative dispersion at place is up to -3400 pskm-1·nm-1.This negative dispersion photonic crystal fiber high can be as dispersion compensation light
Fine Dispersion Compensating Fiber, DCF are compensated to dispersion, reduce the total color in optic communication Transmission system
Dissipate, improve signal quality.
Utility model content
In order to solve deficiency of the prior art, the utility model provides a kind of photonic crystal fiber of negative dispersion high,
Whole C-band is presented negative dispersion high and low confinement loss characteristic, it is adaptable to broadband chromatic dispersion compensation.
To achieve these goals, the concrete scheme that the utility model is used for：
A kind of photonic crystal fiber of negative dispersion high, including base material, fibre core are provided with base material and are centered around outside fibre core
The covering of side, wherein covering are made up of several along optical fiber arranged radially and the circular airport that is parallel to each other, the covering bag
Several the 3rd airports being distributed along regular hexagon are included, the center of regular hexagon is provided with two rows are parallel to each other first
Airport, two base materials that ranked first between airport constitute fibre core；If being provided between the first airport and the 3rd airport
Dry the second airport of periodic arrangement；The aperture of first airport is more than the aperture of the 3rd airport, the 3rd air
Aperture of the aperture in hole more than the second airport；Spacing between the adjacent airport of any two between axis is equal.
Often ranked first airport and have four, and the first airport 1.14 μm of aperture.
Second airport sets layer altogether, and aperture is 0.83 μm.
3rd airport sets layer altogether, and aperture is 0.88 μm.
Spacing between any two airport is 1.15 μm.
The optical fiber base material is quartz, and its refractive index is 1.45.
Beneficial effect：
1st, photonic crystal fiber described in the utility model is presented negative dispersion high in low-loss communication window C-band, can
Dispersion compensation effectively is carried out to bandwidth；
2nd, the high birefringence effect that the utility model is presented, is suitable for the Polarization Control of Fibre Optical Sensor, high-accuracy light
Learn device and optical communication system.
Brief description of the drawings
Fig. 1 is the cross-sectional view of the utility model photonic crystal fiber；
Fig. 2 is the dispersion curve figure of the utility model photonic crystal fiber；
Fig. 3 is the birefringence curve map of the utility model photonic crystal fiber；
Fig. 4 is the confinement loss curve map of the utility model photonic crystal fiber.
Reference：1st, fibre core, the 2, first airport, the 3, second airport, the 4, the 3rd airport.
Specific embodiment
Implementation method of the present utility model is illustrated below according to accompanying drawing.
As shown in figure 1, a kind of photonic crystal fiber of negative dispersion high, including base material, fibre core 1 is provided with base material and is enclosed
It is wound on the covering in the outside of fibre core 1, wherein covering is made up of several along optical fiber arranged radially and the circular airport that is parallel to each other,
The covering includes several the 3rd airports 4 being distributed along regular hexagon, and the center of regular hexagon is provided with two row's phases
Mutual the first parallel airport 2, two base materials that ranked first between airport 2 constitute fibre core 1；It is empty in the first airport 2 and the 3rd
The second airport 3 of several periodic arrangements is provided between stomata 4；The aperture of first airport 2 is empty more than the 3rd
The aperture of stomata 4, the aperture of the aperture more than the second airport 3 of the 3rd airport 4.Except ranked first position phase in airport 2
Outside corresponding first airport 2, the spacing between the adjacent airport axis of any two is equal.
As a kind of preferred scheme, often ranked first airport 2 and have four, and the first airport 2 1.14 μm of aperture.Institute
State the second airport 3 and set 3 layers altogether, and aperture is 0.83 μm.3rd airport 4 sets 3 layers altogether, and aperture is 0.88 μ
m.Spacing between any two air axially bored line is 1.15 μm.The optical fiber base material is quartz, and its refractive index is 1.45.
Fig. 2,3 and 4 are respectively dispersion curve figure, the birefringence curve map peace treaty of photonic crystal fiber described in the utility model
Beam damage curve figure.As illustrated, photonic crystal fiber described in the utility model is presented high in low-loss communication window C-band
Negative dispersion, particularly at 1.55 μm of wavelength, negative dispersion value is -11660pskm-1·nm-1, confinement loss is about 10-3dB·
km-1。
Photonic crystal fiber described in the utility model is presented negative dispersion high, low-loss, tool in low-loss communication window C-band
There is good dispersion compensation ability, can be in dense wavelength division multiplexing and long range, Large Copacity, high power and high speed optical communication
Wide application is obtained in system.
Claims (6)
1. a kind of photonic crystal fiber of negative dispersion high, including base material, is provided with fibre core on base material（1）Be centered around fibre core
（1）The covering in outside, wherein covering are made up of several along optical fiber arranged radially and the circular airport that is parallel to each other, its feature
It is：The covering includes several the 3rd airports being distributed along regular hexagon（4）, it is provided with the center of regular hexagon
The first airport that two rows are parallel to each other（2）, two ranked first airport（2）Between base material constitute fibre core（1）；In the first air
Hole（2）With the 3rd airport（4）Between be provided with the second airport of several periodic arrangements（3）；First airport
（2）Aperture be more than the 3rd airport（4）Aperture, the 3rd airport（4）Aperture be more than the second airport（3）Aperture；
Spacing between the adjacent airport axis of any two is equal.
2. a kind of photonic crystal fiber of negative dispersion high as claimed in claim 1, it is characterised in that：Often ranked first airport
（2）Have four, and the first airport（2）1.14 μm of aperture.
3. a kind of photonic crystal fiber of negative dispersion high as claimed in claim 1, it is characterised in that：Second airport
（3）3 layers are set altogether, and aperture is 0.83 μm.
4. a kind of photonic crystal fiber of negative dispersion high as claimed in claim 1, it is characterised in that：3rd airport
（4）3 layers are set altogether, and aperture is 0.88 μm.
5. a kind of photonic crystal fiber of negative dispersion high as claimed in claim 1, it is characterised in that：Any two air
Spacing between hole is 1.15 μm.
6. a kind of photonic crystal fiber of negative dispersion high as claimed in claim 1, it is characterised in that：The optical fiber base material is stone
English, its refractive index is 1.45.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331521.6U CN206248880U (en) | 2016-12-07 | 2016-12-07 | A kind of photonic crystal fiber of negative dispersion high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331521.6U CN206248880U (en) | 2016-12-07 | 2016-12-07 | A kind of photonic crystal fiber of negative dispersion high |
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| Publication Number | Publication Date |
|---|---|
| CN206248880U true CN206248880U (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621331521.6U Expired - Fee Related CN206248880U (en) | 2016-12-07 | 2016-12-07 | A kind of photonic crystal fiber of negative dispersion high |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247303A (en) * | 2017-06-27 | 2017-10-13 | 重庆邮电大学 | A kind of new equal aperture pure circle hole high double-refraction photon crystal fiber |
| CN113671620A (en) * | 2021-08-23 | 2021-11-19 | 燕山大学 | Single-core polarization-maintaining dispersion compensation microstructure optical fiber |
| CN114035265A (en) * | 2021-11-29 | 2022-02-11 | 湖南大学 | Photonic crystal fiber transmission system suitable for ultra-long distance transmission |
-
2016
- 2016-12-07 CN CN201621331521.6U patent/CN206248880U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247303A (en) * | 2017-06-27 | 2017-10-13 | 重庆邮电大学 | A kind of new equal aperture pure circle hole high double-refraction photon crystal fiber |
| CN113671620A (en) * | 2021-08-23 | 2021-11-19 | 燕山大学 | Single-core polarization-maintaining dispersion compensation microstructure optical fiber |
| CN113671620B (en) * | 2021-08-23 | 2022-05-24 | 燕山大学 | Single-core polarization-maintaining dispersion compensation microstructure optical fiber |
| CN114035265A (en) * | 2021-11-29 | 2022-02-11 | 湖南大学 | Photonic crystal fiber transmission system suitable for ultra-long distance transmission |
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| GR01 | Patent grant | ||
| 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: 20170613 Termination date: 20171207 |