CN100439951C - Photonic crystal optical fiber - Google Patents
Photonic crystal optical fiber Download PDFInfo
- Publication number
- CN100439951C CN100439951C CNB2006101553182A CN200610155318A CN100439951C CN 100439951 C CN100439951 C CN 100439951C CN B2006101553182 A CNB2006101553182 A CN B2006101553182A CN 200610155318 A CN200610155318 A CN 200610155318A CN 100439951 C CN100439951 C CN 100439951C
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- Prior art keywords
- photonic crystal
- crystal fiber
- fiber
- covering
- optical fiber
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- 239000004038 photonic crystal Substances 0.000 title claims description 20
- 239000013307 optical fiber Substances 0.000 title claims description 12
- 239000000835 fiber Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 26
- 239000011343 solid material Substances 0.000 claims description 5
- 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
- 239000006185 dispersion Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 3
- 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
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
This invention relates to one photon transistor fiber, which section plane comprises fiber core and cover layer, wherein, the cover layer is of same structure air hole outside area distributed evenly; the said air hole is in round arraying in the fiber background materials; each near three air holes units form one right triangle; the said fiber core is formed by the hard materials in the center part of air hole and the materials reflection rate is higher than background reflection rate.
Description
(1) technical field
The present invention 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 present invention 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 present invention takes 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 of the present invention 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 one embodiment of the invention;
Fig. 2 is the mould field pattern of Fig. 1 example;
Fig. 3 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 1-3, 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 R=0.46 μ m in the covering, and 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 Λ=2.3 μ m.The core centre zone is that a radius is the airport 4 of R=0.5 μ m, connects a square high-index material 3 in the airport 4, and 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, the mould field distribution is as shown in Figure 2.This photonic crystal fiber has extremely strong effect of dispersion, and its dispersion parameters has dispersion parameters up to-3020ps/nm/km at 1.55 mum wavelengths.
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 airports 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 |
|---|---|---|---|
| CNB2006101553182A CN100439951C (en) | 2006-12-19 | 2006-12-19 | Photonic crystal optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101553182A CN100439951C (en) | 2006-12-19 | 2006-12-19 | Photonic crystal optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101042452A CN101042452A (en) | 2007-09-26 |
| CN100439951C true CN100439951C (en) | 2008-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101553182A Expired - Fee Related CN100439951C (en) | 2006-12-19 | 2006-12-19 | Photonic crystal optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100439951C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1118887A2 (en) * | 2000-01-21 | 2001-07-25 | Sumitomo Electric Industries, Ltd. | Photonic crystal fibre (PCF) having multiple cladding layers |
| CN1341221A (en) * | 1999-02-19 | 2002-03-20 | 布拉兹光子学有限公司 | Improvements in or relating to photonic crystal fibres |
| CN1584641A (en) * | 2004-06-01 | 2005-02-23 | 中国科学院上海光学精密机械研究所 | Photonic crystal fiber |
-
2006
- 2006-12-19 CN CNB2006101553182A patent/CN100439951C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341221A (en) * | 1999-02-19 | 2002-03-20 | 布拉兹光子学有限公司 | Improvements in or relating to photonic crystal fibres |
| EP1118887A2 (en) * | 2000-01-21 | 2001-07-25 | Sumitomo Electric Industries, Ltd. | Photonic crystal fibre (PCF) having multiple cladding layers |
| CN1584641A (en) * | 2004-06-01 | 2005-02-23 | 中国科学院上海光学精密机械研究所 | Photonic crystal fiber |
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| Publication number | Publication date |
|---|---|
| CN101042452A (en) | 2007-09-26 |
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| C06 | Publication | ||
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Granted publication date: 20081203 Termination date: 20111219 |