CN201072454Y - Photon crystal optical fiber - Google Patents
Photon crystal optical fiber Download PDFInfo
- Publication number
- CN201072454Y CN201072454Y CNU2006201411971U CN200620141197U CN201072454Y CN 201072454 Y CN201072454 Y CN 201072454Y CN U2006201411971 U CNU2006201411971 U CN U2006201411971U CN 200620141197 U CN200620141197 U CN 200620141197U CN 201072454 Y CN201072454 Y CN 201072454Y
- Authority
- CN
- China
- Prior art keywords
- photonic crystal
- fiber
- crystal fiber
- covering
- optical 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 description 12
- 239000013078 crystal Substances 0.000 title 1
- 239000000835 fiber Substances 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000004038 photonic crystal Substances 0.000 claims abstract description 22
- 239000011343 solid material Substances 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 238000009827 uniform distribution Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005253 cladding Methods 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
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- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The utility model relates to photonic crystal fiber, the cross section of which comprises a fiber core and a cladding. The cladding is an external region uniformly distributed with air holes of a same structure, which surrounds the fiber core. Besides, the air holes in fiber background materials are arranged in periodicity, and every three adjacent air holes form a triangle; the fiber core is formed by regular polygon solid materials connected inside the air holes at center, and the reflection rate of the solid materials is higher than the reflection rate of the background materials of the fiber. The utility model promotes the fiber core structure of the photonic crystal fiber, and high reflection rate polygon materials and externally connected air round holes form the fiber core with special structure, which leads the photonic crystal fiber to have super-large dispersive effect.
Description
(1) technical field
The utility model relates to a kind of photonic crystal fiber with extremely strong effect of dispersion.
(2) background technology
Photonic crystal fiber is called porous optical fiber or microstructured optical fibers again.On fiber end face, regularly arranged many airports are elongation vertically in background material, at air aperture of the center of optical fiber disappearance, replace solid background material, perhaps insert the fibre core that refractive index is higher than other material formation leaded light of background material, and the evenly distributed formation covering of peripheral air hole in background material, the optical mode field is limited to high refractivity zone, center substantially, and this type optical fiber is by the total internal reflection principle leaded light.By regulating covering hollow pore opening, pitch of holes size, the size of central entity, the refractive index of central entity, can make photonic crystal fiber have flexile dispersion characteristics.The photonic crystal fiber of design super large dispersion parameters will provide efficient strong indemnifying measure for the chromatic dispersion cross-interference issue on the optical communication line, and huge dispersive optical fiber also might become the substitute of some unstable chromatic dispersion elements in the pulse compression amplifying technique.
(3) summary of the invention
The utility model provides the photonic crystal fiber of a kind of features simple structure and the easy super large chromatic dispersion of making in order to solve the difficulty that is difficult to realize at present the super large dispersion parameters in ordinary optic fibre.
For this reason, the utility model is taked following technical scheme:
A kind of photonic crystal fiber, the transversal section of optical fiber comprises fibre core and covering, covering is for surrounding the outer peripheral areas that is uniform-distribution with the same structure airport of fibre core, described airport is periodic arrangement in the optical fiber background material, every three adjacent air element constitute an equilateral triangle, described fibre core is made of the solid material that the airport that is positioned at the centre connects regular polygon, and the refractive index of described solid material is higher than the refractive index of optical fiber background material.
Described regular polygon can be square, equilateral triangle, regular pentagon.
Described covering background material is the silex glass material.
Described covering background material is a polymeric material.
The beneficial effect of photonic crystal fiber described in the utility model is mainly reflected in: improve the core structure of photonic crystal fiber, the common special construction fibre core that forms of high index of refraction polygon material and external air circular hole causes photonic crystal fiber to have the super large effect of dispersion.
(4) description of drawings
Fig. 1 is the cross sectional representation of an embodiment of the utility model;
Fig. 2 be in Fig. 1 example the photonic crystal fiber dispersion parameters with the wavelength change situation.
Among Fig. 1, the airport in the 1-covering, the background material in the 2-covering, the solid material of 3-regular polygon, 4-fibre core airport.
(5) embodiment
Embodiment one:
With reference to accompanying drawing 1-2, a kind of photonic crystal fiber, end face structure as shown in Figure 1, the background material 2 of covering is quartzy, refractive index is 1.45, the radius of each airport 1 is in the covering
Airport 1 is evenly distributed in background material 2 according to the generally acknowledged triangle rule in present technique field in the covering, and the spacing of adjacent vacant pore is
The core centre zone is that a radius is
Airport 4, connect a square high-index material 3 in the airport 4, refractive index is n 1.9.Center airport 4 with in connect the square entity 3 common fibre cores that form of high index of refraction.This photonic crystal fiber has extremely strong effect of dispersion, and its dispersion parameters exists
Wavelength has the dispersion parameters up to 3020ps/nm/km.
Embodiment two:
On the center of fiber end face, connect an equilateral triangle solid cylinder high-index material in the airport and form fiber core.
Claims (6)
1. photonic crystal fiber, the transversal section of optical fiber comprises fibre core and covering, covering is for surrounding the outer peripheral areas that is uniform-distribution with the same structure airport of fibre core, described airport is periodic arrangement in the optical fiber background material, every three adjacent air element constitute an equilateral triangle, it is characterized in that described fibre core is made of the solid material that the airport that is positioned at the centre connects regular polygon, the refractive index of described solid material is higher than the refractive index of optical fiber background material.
2. a kind of photonic crystal fiber as claimed in claim 1 is characterized in that described regular polygon is square.
3. a kind of photonic crystal fiber as claimed in claim 1 is characterized in that described regular polygon is an equilateral triangle.
4. a kind of photonic crystal fiber as claimed in claim 1 is characterized in that described regular polygon is a regular pentagon.
5. as the described a kind of photonic crystal fiber of one of claim 1-4, the background material that it is characterized in that covering is the silex glass material.
6. as the described a kind of photonic crystal fiber of one of claim 1-4, the background material that it is characterized in that covering is a polymeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201411971U CN201072454Y (en) | 2006-12-19 | 2006-12-19 | Photon crystal optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201411971U CN201072454Y (en) | 2006-12-19 | 2006-12-19 | Photon crystal optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201072454Y true CN201072454Y (en) | 2008-06-11 |
Family
ID=39551010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201411971U Expired - Fee Related CN201072454Y (en) | 2006-12-19 | 2006-12-19 | Photon crystal optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201072454Y (en) |
-
2006
- 2006-12-19 CN CNU2006201411971U patent/CN201072454Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080611 Termination date: 20101219 |