CN201072453Y - Photon crystal optical fiber - Google Patents
Photon crystal optical fiber Download PDFInfo
- Publication number
- CN201072453Y CN201072453Y CNU2006201411952U CN200620141195U CN201072453Y CN 201072453 Y CN201072453 Y CN 201072453Y CN U2006201411952 U CNU2006201411952 U CN U2006201411952U CN 200620141195 U CN200620141195 U CN 200620141195U CN 201072453 Y CN201072453 Y CN 201072453Y
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- China
- Prior art keywords
- region
- airport
- zone line
- photonic crystal
- fiber
- Prior art date
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- 239000013307 optical fiber Substances 0.000 title claims description 7
- 239000013078 crystal Substances 0.000 title 1
- 239000000835 fiber Substances 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000004038 photonic crystal Substances 0.000 claims abstract description 22
- 239000007787 solid Substances 0.000 claims abstract description 15
- 238000005253 cladding Methods 0.000 claims abstract description 10
- 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
- 239000011343 solid material Substances 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 description 15
- 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
- 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
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The utility model relates to photonic crystal fiber, the end face of which is divided into two regions: a fiber core region and a cladding region. The cladding region 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 region is formed by a round solid region and a solid region at center and a middle region in the cladding region, the middle region is arranged and distributed with air holes, and background materials of the middle region is similar to background materials of the cladding region. The reflection rate of the fiber core solid region of the utility model is higher than the reflection rate of the background materials; in addition, being influenced by the solid materials with high reflection rate and several surrounding auxiliary small holes, the fiber has extremely large dispersive effect and can be made into high effective dispersive and compensating fiber.
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 the center high-refractive-index regions 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 the photonic crystal fiber of super large dispersion parameters 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 the design super large chromatic dispersion that a kind of features simple structure is also made easily for solving the difficulty that is difficult to realize huge effect of dispersion at present in ordinary optic fibre.
For this reason, the utility model is taked following technical scheme:
A kind of photonic crystal fiber, comprise 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 up of center solid area and zone line, wherein zone line is between center solid area and cladding regions, described zone line is placed with airport, the background material of described zone line is identical with the background material of cladding regions, and the refractive index of described center solid area material is greater than the refractive index of covering background material.
The airport of described zone line is close to solid area and is evenly arranged.
The airport diameter of described zone line is less than the airport diameter of cladding regions.
The airport of described zone line is symmetrically distributed around the center of fibre core, and the airport of described zone line can be for one of following: three; Four; Five; Six; Seven; Eight.
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: the core structure of improving photonic crystal fiber, form core structure jointly by several equal big or small airports of being close to central entity of arranging in high index of refraction central entity and the zone line, this structure has caused the photonic crystal fiber of super large dispersion parameters.
(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;
Fig. 3 be among another embodiment the photonic crystal fiber dispersion parameters with the wavelength change situation;
Among the figure, the airport in the 1-covering; Background material in the 2-covering; The center solid area of 3-fibre core; The airport of 4-zone line.
(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 and zone line is quartzy, refractive index is 1.45, the radius of each airport 1 is in the covering
Airport is evenly distributed in quartz material according to the generally acknowledged triangle rule in present technique field in the covering, and the spacing of adjacent vacant pore is
Center solid area 3 is the circular entities of a high index of refraction, and refractive index is n 1.9, and radius is
Be symmetrically distributed with three airports 4 at zone line, and these three airports are close to around the center solid area 3, the radius of above-mentioned three airports is
The zone line and the circular entity of high index of refraction that are distributed with three airports form fibre core jointly.This photonic crystal fiber has extremely strong effect of dispersion, and its dispersion parameters exists
Wavelength has the dispersion parameters up to 3260ps/nm/km.
Embodiment two:
With reference to accompanying drawing 3, except that the airport of zone line becomes five by three, all parameters are identical with embodiment one.This moment is at wavelength
Super large chromatic dispersion up to 5200ps/nm/km is arranged.
Embodiment three:
The background material of covering and zone line is a polymeric material, and other conditions are with embodiment one or embodiment two.
Claims (6)
1. photonic crystal fiber, comprise 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 up of center solid area and zone line, wherein zone line is between center solid area and cladding regions, described zone line is placed with airport, the background material of described zone line is identical with the background material of cladding regions, and the refractive index of described center solid area material is greater than the refractive index of covering background material.
2. photonic crystal fiber as claimed in claim 1, the zone line airport that it is characterized in that described fibre core is close to solid area and is evenly arranged.
3. photonic crystal fiber as claimed in claim 1 is characterized in that the airport diameter of the airport diameter of described zone line less than cladding regions.
4. as the described photonic crystal fiber of one of claim 1-3, the airport that it is characterized in that described zone line is symmetrically distributed around the center of fibre core, and the airport of described zone line can be for one of following: three; Four; Five; Six; Seven; Eight.
5. photonic crystal fiber as claimed in claim 1 is characterized in that described covering background material is the silex glass material.
6. photonic crystal fiber as claimed in claim 1 is characterized in that described covering background material is a polymeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201411952U CN201072453Y (en) | 2006-12-19 | 2006-12-19 | Photon crystal optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201411952U CN201072453Y (en) | 2006-12-19 | 2006-12-19 | Photon crystal optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201072453Y true CN201072453Y (en) | 2008-06-11 |
Family
ID=39551009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201411952U Expired - Fee Related CN201072453Y (en) | 2006-12-19 | 2006-12-19 | Photon crystal optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201072453Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193139A (en) * | 2011-05-26 | 2011-09-21 | 东华大学 | Open microstructured fiber for having composite fiber core and using shifted single-hole diversion |
-
2006
- 2006-12-19 CN CNU2006201411952U patent/CN201072453Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193139A (en) * | 2011-05-26 | 2011-09-21 | 东华大学 | Open microstructured fiber for having composite fiber core and using shifted single-hole diversion |
| CN102193139B (en) * | 2011-05-26 | 2013-01-16 | 东华大学 | Open microstructured fiber for having composite fiber core and using shifted single-hole diversion |
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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 |