CN2769905Y - Chromatic dispersion flat photon crystal optical fiber - Google Patents
Chromatic dispersion flat photon crystal optical fiber Download PDFInfo
- Publication number
- CN2769905Y CN2769905Y CN 200420013539 CN200420013539U CN2769905Y CN 2769905 Y CN2769905 Y CN 2769905Y CN 200420013539 CN200420013539 CN 200420013539 CN 200420013539 U CN200420013539 U CN 200420013539U CN 2769905 Y CN2769905 Y CN 2769905Y
- Authority
- CN
- China
- Prior art keywords
- air holes
- airport
- optical fiber
- photon crystal
- fiber
- Prior art date
- 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
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 17
- 239000013078 crystal Substances 0.000 title claims abstract description 10
- 239000006185 dispersion Substances 0.000 title description 16
- 239000000835 fiber Substances 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000005253 cladding Methods 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims 1
- 230000009022 nonlinear effect Effects 0.000 abstract description 4
- 241000533950 Leucojum Species 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000004038 photonic crystal Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The utility model relates to a dispersive flat-photon crystal optical fiber, which comprises a fiber core and a cladding. Air holes which are arranged in an equispaced mode are arranged on background material of an optical fiber, and the air holes have a triangular structure. The utility model is characterized in that the fiber core is composed of the air holes which surround at the inner part of the background material to be arranged in a snowflake shape; the diameter of the air holes forming a fiber core region is smaller than the diameter of the air holes forming a cladding region; the duty ratio of the air holes in the fiber core region is smaller than the duty ratio of the air holes in the cladding region; the fiber core is composed of thirteen air holes. Under the condition of the determined separation distance of the air holes, the utility model only can realize positive, null and negative dispersive flat-type optical fibers within the range of a wide band only by changing the size of the air holes in the fiber core region; a mold field has large area; the non-linear effect of the optical fiber is small.
Description
(1) technical field
The utility model relates to a kind of photonic crystal fiber, the photonic crystal fiber that particularly a kind of broadband scope internal dispersion is smooth, mode field area is bigger.
(2) background technology
Photonic crystal fiber is called porous optical fiber or microstructured optical fibers again.On fiber end face, regularly arranged many air apertures are elongation vertically in background material, at air aperture of the center of optical fiber disappearance, forms the fibre core of leaded light, and the evenly distributed formation covering of peripheral air hole in background material.Fiber core refractive index is greater than covering, and this class photonic crystal fiber is to carry out leaded light by the principle of total internal reflection, and the optical mode field is limited to the central defect position substantially.By changing covering hollow pore opening and pitch of holes size, can the various dispersion characteristics of flexible design, wherein dispersed flat photon crystal fiber is used very extensive in wavelength-division multiplex system.Adopt the double clad technology, promptly suitably reduce to be close to a circle in the covering of fibre core or a few airport sizes and can realize dispersion flattene in the broad wavelength band, but the size of the airport in the interior surrounding layer influences dispersion characteristics jointly, design dispersed flat photon crystal fiber, need to regulate two parameters, therefore be necessary to inquire into more easy design.
(3) summary of the invention
The purpose of this utility model is a photonic crystal fiber of realizing that broadband scope internal dispersion is smooth, mode field area is bigger.
For this reason, the utility model is taked following technical scheme:
A kind of photonic crystal fiber, comprise fibre core and covering, on the background material of optical fiber, be provided with the airport that is the uniform arrangement of equilateral triangle structure, the airport that it is characterized in that constituting fibre core is centered around and is flakes in the background material and arranges, the airport diameter that constitutes core region is littler than the airport diameter that constitutes cladding regions, and the airport dutycycle of core region is less than the dutycycle of cladding regions.
Further, the airport of formation fibre core is 13.
Further, the airport of formation core region lacks fully.
The utility model has the advantages that: under the condition that the airport spacing is determined, only need to change the airport size of core region, just can in broadband scope very, just realize, zero and negative dispersion flattened fiber, and mode field area is bigger, the nonlinear effect of optical fiber is less.
The optical fiber that the utility model provides can be applicable to the transmission system of wavelength-division multiplex, makes the dispersion parameters of each interchannel basic identical, and bigger mode field area has also suitably reduced the nonlinear effect in the transmission course simultaneously.
(4) description of drawings
Fig. 1 is the cross sectional representation of an embodiment of the utility model;
Fig. 2 is the another kind of cross sectional representation of the utility model
(5) embodiment
With reference to accompanying drawing 1, a kind of photonic crystal fiber comprises fibre core and covering, selecting quartz is background material 2, on the whole end face of optical fiber, and a kind of periodic arrangement that adopts the present technique field to generally acknowledge, promptly as shown in Figure 1, equilateral triangle of every three adjacent airports, 1 continuous formation.13 airports that are the flakes distribution in the end face central area are less than other airports, thereby there are less airport dutycycle and bigger refractive index in this zone, constitutes fibre core, is the leaded light zone of optical fiber, be subjected to the influence of core shape, mould field shape also is the flakes distribution as shown in Figure 2.In addition, fibre core is to center on the zone that forms by 13 less airports, and area is bigger, and the mode field area of qualification is also relatively large, can reduce the nonlinear effect of optical fiber.Outer peripheral areas is made of the uniform arrangement of bigger airport in background material, because of the airport dutycycle greater than core region, refractive index is slightly less than core region, forms covering.
Fig. 2 illustrates the cross section structure figure that the core region airport lacks fully.
When airport spacing Λ=2.3 microns (whole fiber end face), the diameter of 13 airports of core region is d
2In the time of=0.4 micron, in 1.4～1.7 microns 300 nanometer wavelength range, dispersion parameters is from-9.4～-11 ps/nm/kilometers; The airport spacing is constant, and core region airport diameter is changed into d
2In the time of=0.29 micron, in 1.4～1.7 microns 300 nanometer wavelength range, dispersion parameters is from-0.65～-0.15 ps/nm/kilometer; d
2In the time of=0.28 micron, as shown in Figure 5, dispersion parameters is from 0.2～0.7 ps/nm/kilometer; If it is d that 13 airports of core region lack fully
2In the time of=0 micron, dispersion parameters is from 13.8～12.9 ps/nm/kilometers.In the present embodiment, when the airport spacing is determined, only need change the airport size of the core region that is the flakes arrangement, realize smooth negative dispersion, smooth nearly zero little negative dispersion, smooth nearly zero little positive dispersion and smooth positive dispersion.
Claims (5)
1. dispersed flat photon crystal fiber, comprise fibre core and covering, on the background material of optical fiber, be provided with the airport that is the uniform arrangement of equilateral triangle structure, the airport that it is characterized in that constituting fibre core is centered around and is flakes in the background material and arranges, the airport diameter that constitutes core region is littler than the airport diameter that constitutes cladding regions, and the airport dutycycle of core region is less than the dutycycle of cladding regions.
2. dispersed flat photon crystal fiber as claimed in claim 1, the airport that it is characterized in that constituting fibre core is 13.
3. dispersed flat photon crystal fiber as claimed in claim 1 is characterized in that the airport that constitutes core region lacks fully.
4. as the described dispersed flat photon crystal fiber of one of claim 1-3, it is characterized in that the optical fiber background material is the silex glass material.
5. as the described dispersed flat photon crystal fiber of one of claim 1-3, it is characterized in that the optical fiber background material is a polymeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420013539 CN2769905Y (en) | 2004-12-29 | 2004-12-29 | Chromatic dispersion flat photon crystal optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420013539 CN2769905Y (en) | 2004-12-29 | 2004-12-29 | Chromatic dispersion flat photon crystal optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2769905Y true CN2769905Y (en) | 2006-04-05 |
Family
ID=36690982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420013539 Expired - Fee Related CN2769905Y (en) | 2004-12-29 | 2004-12-29 | Chromatic dispersion flat photon crystal optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2769905Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407204A (en) * | 2018-11-09 | 2019-03-01 | 燕山大学 | Quartzy base microstructured optical fibers with secondary micron liquid crystal column |
| CN115291319A (en) * | 2022-08-12 | 2022-11-04 | 西安邮电大学 | Photonic crystal fiber |
-
2004
- 2004-12-29 CN CN 200420013539 patent/CN2769905Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407204A (en) * | 2018-11-09 | 2019-03-01 | 燕山大学 | Quartzy base microstructured optical fibers with secondary micron liquid crystal column |
| CN115291319A (en) * | 2022-08-12 | 2022-11-04 | 西安邮电大学 | Photonic crystal fiber |
| CN115291319B (en) * | 2022-08-12 | 2024-03-26 | 西安邮电大学 | Photonic crystal fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100585438C (en) | A kind of high non-linear single polarization single-mould photonic crystal fiber | |
| CN101464538A (en) | Photonic crystal fiber with ultra-high double refraction and ultra-low limitation loss | |
| CN100495090C (en) | Araneose hollow optical fiber | |
| MXPA02004154A (en) | Ring photoni crystal fibers. | |
| CN101836143A (en) | Hollow-core photonic crystal fibre | |
| US20090180746A1 (en) | Holey fiber | |
| CN101281273A (en) | Ultra-high non-linear photon crystal optical fiber based on narrow slit effect | |
| EP2293126A1 (en) | Holey fiber | |
| CN1304860C (en) | Large mode field area large chromatic dispersion photonic crystal fiber | |
| AU2001234153B9 (en) | Optical fiber | |
| CN104199141A (en) | High-nonlinearity dispersion flattened photonic crystal fiber with pentagonal core | |
| CN200968994Y (en) | Photonic crystal optical fiber | |
| CN2769905Y (en) | Chromatic dispersion flat photon crystal optical fiber | |
| CN1588141A (en) | Photon crystal optical fiber | |
| CN1296735C (en) | Dispersed flat photon crystal fiber | |
| CN114035264B (en) | Dispersion compensation microstructure optical fiber | |
| CN1170177C (en) | Double core photon crystal optical fibre | |
| CN200972513Y (en) | Single mould photon crystal optical fibre | |
| CN106908894B (en) | Chromatic dispersion flat full-solid microstructure optical fiber | |
| Razzak et al. | Dispersion and confinement loss control in modified hexagonal photonic crystal fibers | |
| CN200968995Y (en) | Dispersion flat photonic optical fiber | |
| WO2008049374A1 (en) | An all-solid band gap fiber with low limit loss and low bending loss | |
| CN201000494Y (en) | Photonic crystal optical fiber | |
| CN201072453Y (en) | Photon crystal optical fiber | |
| CN100449338C (en) | Photonic crystal fiber |
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 |