CN104597558A - Novel high birefringence high non-linearirty photonic crystal fiber - Google Patents
Novel high birefringence high non-linearirty photonic crystal fiber Download PDFInfo
- Publication number
- CN104597558A CN104597558A CN201510003347.6A CN201510003347A CN104597558A CN 104597558 A CN104597558 A CN 104597558A CN 201510003347 A CN201510003347 A CN 201510003347A CN 104597558 A CN104597558 A CN 104597558A
- Authority
- CN
- China
- Prior art keywords
- oval
- photonic crystal
- airport
- crystal fiber
- birefringence
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02295—Microstructured optical fibre
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02295—Microstructured optical fibre
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
- G02B6/02342—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by cladding features, i.e. light confining region
- G02B6/02371—Cross section of longitudinal structures is non-circular
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a novel high birefringence high non-linearity photonic crystal fiber. The photonic crystal fiber comprises a negative dispersion flat characteristic. The photonic crystal fiber is in a full-elliptical air hole structure. By changing the angles of the first layer of the elliptical holes, the sixfold rotation symmetry of the photonic crystal fiber is destroyed, and accordingly, high birefringence is obtained, and outstanding non-linearity and dispersion performances can be obtained. Due to the change of the air hole structure parameters, the birefringence of the photonic crystal fiber is higher than that of traditional polarization maintaining optical fibers by two magnitude orders, and high non-linearity coefficients are obtained in the X and Y polarization directions. Besides, a negative dispersion flat region approximate to 550nm ranging from 1000nm to 1550nm can be obtained. The photonic crystal fiber has wide application prospects in fields of polarization control, non-linear optics and optical fiber communications.
Description
Technical field
The present invention relates to field fiber, specifically a kind of novel high birefringence high non-linearity bears smooth chromatic dispersion photonic crystal fiber.
Background technology
In recent years, the research of photonic crystal fiber (photonic crystal fibers, PCFs) causes interest widely.Compared with traditional fiber, by changing cross-sectional structure flexibly, the characteristics such as PCFs can realize ultraflattened dispersion, unlimited single mode transport, high birefringence, high non-linearity, low limitation loss and large effective module scene are amassed.At present, PCFs is widely used in the fields such as optical communication, nonlinear optics and Fibre Optical Sensor.
The PCFs of high birefringence has important application in making polarization maintaining optical fibre and high-performance laser etc., but traditional polarization maintaining optical fibre only can obtain 10
-4the birefringence of the order of magnitude, cannot meet the demand of optical communication high speed development, and the optical fiber therefore seeking high birefringence becomes a focus in PCFs field.Generally, the sixfold symmetrical structure that photonic crystal fiber is mainly made up of triangular crystal lattice, the basic mode of the PCFs of this class formation is degeneracy in theory, and therefore can be improved the birefringence of PCFs by destruction covering or fibre core symmetry, its numerical value reaches 10
-3the order of magnitude.In order to improve the birefringence of PCFs further, M.J.Steel(document Steel M J, Osgood R M. Elliptical-hole photonic crystal fibers [J]. Opt. Lett. 2,001 26 (4): 229-231, document Steel M J, Osgood R M. Polarization and dispersive properties of elliptical hole photonic crystal fiber [J]. J. Lightw. Tech. 2,001 19 (4): 495-503) propose oval airport photonic crystal fiber (Elliptical-hole photonic crystal fibers, EPCFs), birefringence is made to reach 10
-2the order of magnitude, but limitation loss is larger.Cao(document [10] Cao Ye, Li Rong-Min, Tong Zheng-Rong. Investigation of a new kind of high birefringence photonic crystal fiber [J]. Acta Phys. Sin. (Cao Ye, Li Rongmin, the novel high double-refraction photon crystal fiber characteristic research of virgin lofty and steep one. Acta Physica Sinica), 2013 62 (8) 084215), Mohit Sharma(document Mohit Sharma, Nitu Borogohain, S. Konar et al. Index Guidiing Photonic Crystal Fibers With Large Birefringence and Walk-Off [J]. J. Lightw. Tech. 2,013 31 (21): 3339-3344) and Wang(document Wang E L, Jiang H M, Xie K et al. Photonic crystal fibers with high nonlinearity, large birefringence and multiple zero dispersion-wavelength [J]. Acta Phys. Sin. (king's second base, Jiang Haiming, Xie Kang etc. a kind of high birefringence high non-linearity many zero-dispersion wavelengths photonic crystal fiber. Acta Physica Sinica), 2014 63 (13) 134210) all high birefringence PCFs is designed by elliptical aperture and circular hole being combinationally used, birefringence is respectively 1.53 × 10
-2, 2.22 × 10
-2with 2.54 × 10
-2, but in PCFs, realize elliptical aperture and the PCFs difficulty of circular hole than full elliptical aperture with current manufacturing process simultaneously.
summary of the inventionthe object of the invention is to solve the low problem of prior art photonic crystal fiber birefringence, the high birefringence high non-linearity providing a kind of full elliptical aperture to form with the photonic crystal fiber of negative smooth dispersion, the structure of this optical fiber does not have sixfold rotational symmetry, the birefringence higher than existing birefringence mode photonic crystal fiber can be obtained, and there is high non-linearity, negative smooth dispersion, the advantage of low limitation loss.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of novel high birefringence high non-linearity has the photonic crystal fiber of negative smooth dispersion simultaneously, it is characterized in that: this photonic crystal fiber adopts the complete oval airport structure of triangular crystal lattice arrangement, there is in covering the oval airport array of higher air filling rate, at core centre, a relatively little oval airport defect is set, and by two oval airports being positioned in oval for ground floor in covering airport array about above-mentioned little oval airport relative to other oval airport 90-degree rotations, namely the oval airport in these both sides is symmetrical about the minor axis of the oval airport in center, and the major axis/minor axis of these two oval airports is vertical with the major axis/minor axis of the little oval airport of fibre core, the spacing of all oval airports is Λ, and the major axis of each oval airport and the length of minor axis that form covering are respectively D
yand D
x, the little oval major axis of airport defect and the length of minor axis are respectively d
yand d
x, the formation each oval airport of covering, the ellipticity of little oval airport defect are η=D
y/ D
x=d
y/ d
x.A kind of high birefringence high non-linearity according to claim 1 also with the smooth photonic crystal fiber of negative dispersion, is characterized in that: the background material of this optical fiber is the material that refractive index is greater than air refraction.
Example of the present invention is the Internal Reflection Photonic Crystal Fiber devising a kind of new structure based on pure quartz material.Adopt the finite Element Method Study of the full vector birefringence of this light, non-linear and dispersion characteristics.Research shows, different structural parameters have impact in various degree to this PCF performance, and analysis result also designs suitable structural parameters, makes this photonic crystal fiber can reach 3.05 × 10 in the birefringence that wavelength is 1.55 μm of places
-2, simultaneously obtain comparatively high non-linearity in X and Y polarization direction, Wei 43.6W
-1km
-1with 41.71 W
-1km
-1.In addition, this photonic crystal fiber can obtain the negative smooth dispersion of 1000nm-1550nm wavelength coverage in near-infrared band.The present invention is that the design of high birefringence high non-linearity negative dispersion flattened fiber provides a kind of possibility newly, and this optical fiber will play a significant role in Fibre Optical Sensor, optical soliton communication and super continuous spectrums generation etc.
Accompanying drawing explanation
Fig. 1 is the smooth photonic crystal fiber cross sectional representation of high birefringence high non-linearity negative dispersion of the embodiment of the present invention.
Fig. 2 is electric-field intensity distribution figure of the present invention, wherein:
Fig. 2 a is X polarization direction distribution plan, and Fig. 2 b is Y polarization direction distribution plan.
Fig. 3 is the asynchronous birefringence curve map of pitch of holes of the present invention.
Fig. 4 is the nonlinear factor curve map under different pitch of holes, wherein:
Fig. 4 a is X polarization direction curve map, and Fig. 4 b is Y polarization direction curve map.
Fig. 5 is the dispersion curve figure under different pitch of holes.
Embodiment
A kind of novel high birefringence high non-linearity has the photonic crystal fiber of negative smooth dispersion simultaneously, cross-sectional structure as shown in Figure 1, include pure quartzy background 1, in the oval airport defect 2 that fibre core is introduced, by the covering 3 of triangular crystal lattice arrangement, two oval airports 5 and 6 of half-twist in ground floor in oval airport 4 large in covering and covering, major axis and the minor axis of little oval airport 1 are respectively d
yand d
x, major axis and the minor axis of large oval airport 4 are respectively D
yand D
x, the ellipticity of the oval airport of size is η=D
y/ D
x=d
y/ d
x, the pitch of holes of oval airport is Λ, D
x=0.6 Λ.In addition, little oval airport 1 is positioned at the geometric center of this structure, and oval airport 5 is vertical with the major axis (minor axis) of oval airport 1 with the major axis (minor axis) of 6, and oval airport 5 and oval airport 6 are symmetrical about the major axis of oval airport 1.The birefringence effect of this structural formula photonic crystal fiber is more strong, light beam can be made simultaneously to be more gathered in fibre core and be conducive to obtaining high non-linearity and having excellent negative smooth dispersion characteristics.Getting airport refractive index is 1, and the refractive index of quartz is obtained by document " Interspecimen Comparison of the Refractive Index of Fused Silica ".
In PCF, the energy of light wave transmits in fibre core with the form of basic mode, and therefore whether the mode distributions of basic mode concentrates on fibre core, is the benchmark weighing PCF characteristic quality.Fig. 2 is in λ=1.55 μm, Λ=1.4 μm, D
x=0.6 Λ, d
x=D
xduring/3, η=2, the electric-field intensity distribution figure of basic mode on X and Y polarization direction.As can be seen from Figure, when λ=1.55 μm, the light-wave energy of X and Y polarization direction all can be bound in fibre core very well.
Birefringent characteristic of the present invention
When pitch of holes Λ is different, the birefringence of PCF along with wavelength variations curve as shown in Figure 3.As we know from the figure, the birefringence of PCF reduces along with the increase of Λ, increases along with the increase of wavelength.Therefore, in order to a μm place obtains higher birefringence in wavelength X=1.55, the size of Λ should be reduced as far as possible.When pitch of holes Λ=1.4 μm, D
x=0.6 Λ, d
x=D
xduring/3, η=2, the birefringence that this PCF is 1.55 μm at wavelength can reach 3.05 × 10
-2, the birefringence in 800nm to 2300nm wave band all keeps 10
-2the order of magnitude.
Nonlinear characteristic of the present invention
As shown in Figure 4, show when pitch of holes Λ is different, the nonlinear factor of PCF on X and Y polarization direction is with the change curve of wavelength, and as seen from the figure, nonlinear factor increases along with Λ and reduces, and reduces with the increase of wavelength.Therefore the structural parameters of PCF can be designed according to the needs of nonlinear factor.In pitch of holes Λ=1.4 μm, D
x=0.6 Λ, d
x=D
xduring/3, η=2, the nonlinear factor of X and Y polarization state is respectively 43.6W
-1km
-1with 41.71 W
-1km
-1, this structure is while having high birefringence, and nonlinear factor is also higher.The PCFs with high non-linearity effect has significant application value in high power pulse compression, optical soliton communication, super continuous spectrums generation etc.
Dispersion characteristics of the present invention
PCFs dispersion can cause light wave broadening in communication process, and by the distortion directly causing light signal in Optical Fiber Transmission process, dispersion has very adverse influence to fibre-optic transmission system (FOTS), limits the increase of system transfer rate and transmission range.Fig. 5 is under different pitch of holes, and the total dispersion of PCF is with the curve map of wavelength variations.Can find out, and along with the increase of pitch of holes Λ, the wave band of negative smooth dispersion broadens.Be Λ=1.6 μm at structural parameters, D
x=0.6 Λ, d
x=D
xduring/3, η=2, PCF not only has 2.69 × 10
-2high birefringence, between the 1000-1550nm simultaneously in near-infrared band, there are good negative smooth dispersion characteristics, can be used for dispersion compensation, to ensure that the total dispersion of fibre circuit is approximately zero, thus realization high speed, Large Copacity, long haul communication.
The foregoing is only one embodiment of the present invention, it not whole or unique embodiment, the conversion of those of ordinary skill in the art by reading instructions of the present invention to any equivalence that technical solution of the present invention is taked, is claim of the present invention and contains.
Claims (2)
1. a novel high birefringence high non-linearity has the photonic crystal fiber of negative smooth dispersion simultaneously, it is characterized in that: this photonic crystal fiber adopts the complete oval airport structure of triangular crystal lattice arrangement, there is in covering the oval airport array of higher air filling rate, at core centre, a relatively little oval airport defect is set, and by two oval airports being positioned in oval for ground floor in covering airport array about above-mentioned little oval airport relative to other oval airport 90-degree rotations, namely the oval airport in these both sides is symmetrical about the minor axis of the oval airport in center, and the major axis/minor axis of these two oval airports is vertical with the major axis/minor axis of the little oval airport of fibre core, the spacing of all oval airports is Λ, and the major axis of each oval airport and the length of minor axis that form covering are respectively D
yand D
x, the little oval major axis of airport defect and the length of minor axis are respectively d
yand d
x, the formation each oval airport of covering, the ellipticity of little oval airport defect are η=D
y/ D
x=d
y/ d
x.
2. a kind of high birefringence high non-linearity according to claim 1 with the smooth photonic crystal fiber of negative dispersion, it is characterized in that: the background material of this optical fiber is the material that refractive index is greater than air refraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510003347.6A CN104597558A (en) | 2015-01-05 | 2015-01-05 | Novel high birefringence high non-linearirty photonic crystal fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510003347.6A CN104597558A (en) | 2015-01-05 | 2015-01-05 | Novel high birefringence high non-linearirty photonic crystal fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104597558A true CN104597558A (en) | 2015-05-06 |
Family
ID=53123458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510003347.6A Pending CN104597558A (en) | 2015-01-05 | 2015-01-05 | Novel high birefringence high non-linearirty photonic crystal fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104597558A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054311A (en) * | 2016-08-15 | 2016-10-26 | 中国工程物理研究院激光聚变研究中心 | High-birefringence composite pohotonic crystal fiber |
| CN107843953A (en) * | 2017-07-27 | 2018-03-27 | 西安邮电大学 | A kind of big non-linear photon crystal optical fiber of high birefringence |
| CN108318966A (en) * | 2018-04-13 | 2018-07-24 | 南京航空航天大学 | A kind of photonic crystal fiber with high birefringence and high brillouin gain |
| CN111812770A (en) * | 2020-06-15 | 2020-10-23 | 艾菲博(宁波)光电科技有限责任公司 | Solid-core polarization-maintaining non-cutoff single-mode microstructure optical fiber and preparation process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200942878A (en) * | 2008-04-10 | 2009-10-16 | Yuan-Feng Zhouzhao | Revolving ellipsoid air-hole photon-crystal optical fiber |
| US20100009120A1 (en) * | 2007-02-12 | 2010-01-14 | Boyce Mary C | Pattern production and recovery by transformation |
| CN103472527A (en) * | 2013-09-27 | 2013-12-25 | 天津理工大学 | High-birefringence low-confinement-loss photonic crystal fiber |
| CN104216043A (en) * | 2014-07-31 | 2014-12-17 | 合肥工业大学 | Photonic crystal fiber polarization splitter |
-
2015
- 2015-01-05 CN CN201510003347.6A patent/CN104597558A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100009120A1 (en) * | 2007-02-12 | 2010-01-14 | Boyce Mary C | Pattern production and recovery by transformation |
| TW200942878A (en) * | 2008-04-10 | 2009-10-16 | Yuan-Feng Zhouzhao | Revolving ellipsoid air-hole photon-crystal optical fiber |
| CN103472527A (en) * | 2013-09-27 | 2013-12-25 | 天津理工大学 | High-birefringence low-confinement-loss photonic crystal fiber |
| CN104216043A (en) * | 2014-07-31 | 2014-12-17 | 合肥工业大学 | Photonic crystal fiber polarization splitter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054311A (en) * | 2016-08-15 | 2016-10-26 | 中国工程物理研究院激光聚变研究中心 | High-birefringence composite pohotonic crystal fiber |
| CN106054311B (en) * | 2016-08-15 | 2023-08-22 | 中国工程物理研究院激光聚变研究中心 | High-birefringence composite photonic crystal fiber |
| CN107843953A (en) * | 2017-07-27 | 2018-03-27 | 西安邮电大学 | A kind of big non-linear photon crystal optical fiber of high birefringence |
| CN108318966A (en) * | 2018-04-13 | 2018-07-24 | 南京航空航天大学 | A kind of photonic crystal fiber with high birefringence and high brillouin gain |
| CN111812770A (en) * | 2020-06-15 | 2020-10-23 | 艾菲博(宁波)光电科技有限责任公司 | Solid-core polarization-maintaining non-cutoff single-mode microstructure optical fiber and preparation process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103472527B (en) | A kind of High-birefringence low-confinement-lossphotonic photonic crystal fiber | |
| CN103091770B (en) | A kind of photonic crystal fiber polarization beam splitting device | |
| CN101414026A (en) | High non-linear single polarization single-mould photonic crystal fiber | |
| CN103605187B (en) | A kind of class double-core photonic crystal fiber tunable optic filter based on selective filling | |
| CN108152881B (en) | Chalcogenide high-birefringence photonic crystal fiber in waveband range of 2-5 microns | |
| CN100541249C (en) | Two-dimensional complete band gap photon crystal and depolarization beam splitter | |
| CN107843953B (en) | High-birefringence large-nonlinearity photonic crystal fiber | |
| CN103913801B (en) | A kind of New-type photon crystal optical fiber | |
| CN104597559B (en) | A kind of photonic crystal fiber for being used to produce column vectorial field | |
| CN104597558A (en) | Novel high birefringence high non-linearirty photonic crystal fiber | |
| CN105137540A (en) | Short length polarization beam splitter based on liquid crystal filling pohotonic crystal fiber | |
| CN106707405B (en) | The porous core photonic crystal fiber of the big core diameter of high birefringence | |
| CN102778723B (en) | Single-mode single-polarization photonic crystal fiber of elliptical air holes array with short axes being gradually shortened | |
| CN102279439A (en) | Hybrid light-guiding type single-polarization single-mode optical fiber | |
| CN107643561A (en) | A kind of low-loss terahertz polarization beam splitter | |
| Lou et al. | Polarization filter based on plasmonic photonic crystal fiber with asymmetry around Au-coated and liquid-filled air holes | |
| CN202093201U (en) | Single-mode single-polarization photonic crystal fiber of outside-in brachyaxis-decreasing elliptical air-hole double triangular array | |
| CN110568545B (en) | Photonic crystal fiber polarization filter | |
| CN208207272U (en) | A kind of high birefringence double-core photonic crystal fiber polarization beam apparatus | |
| CN104678485A (en) | Photonic crystal fiber with high birefringence, high nonlinearity and low confinement loss | |
| CN114035264B (en) | Dispersion compensation microstructure optical fiber | |
| CN103645535B (en) | A kind of high birefringence Hz optical fiber | |
| Hui et al. | Mid-infrared high birefringence As2Se3-based PCF with large nonlinearity and distinctive dispersion by using asymmetric elliptical air hole cladding | |
| CN209311732U (en) | A kind of gradual change type photonic crystal polarization maintaining optical fibre | |
| CN104749690A (en) | Polarization beam splitter of tellurite glass dual-core photonic crystal fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150506 |
|
| RJ01 | Rejection of invention patent application after publication |