CN104880765B - A kind of twin-core polarization-maintaining photonic crystal fiber - Google Patents
A kind of twin-core polarization-maintaining photonic crystal fiber Download PDFInfo
- Publication number
- CN104880765B CN104880765B CN201510362992.7A CN201510362992A CN104880765B CN 104880765 B CN104880765 B CN 104880765B CN 201510362992 A CN201510362992 A CN 201510362992A CN 104880765 B CN104880765 B CN 104880765B
- Authority
- CN
- China
- Prior art keywords
- core
- twin
- photonic crystal
- crystal fiber
- polarization
- 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.)
- Active
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
- G02B6/02319—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by core or core-cladding interface features
- G02B6/02338—Structured core, e.g. core contains more than one material, non-constant refractive index distribution in core, asymmetric or non-circular elements in core unit, multiple cores, insertions between core and clad
-
- 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
- G02B6/02042—Multicore optical fibres
-
- 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
- G02B6/02347—Longitudinal structures arranged to form a regular periodic lattice, e.g. triangular, square, honeycomb unit cell repeated throughout cladding
-
- 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
- G02B6/024—Optical fibres with cladding with or without a coating with polarisation maintaining properties
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/105—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type having optical polarisation effects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention discloses a kind of twin-core polarization-maintaining photonic crystal fiber, the medium holes of periodic arrangement are disposed with the radial direction two-dimensional directional of a diameter of 125um quartz substrates, the medium holes form hexagon medium hole array, a diameter of d1 of each medium holes；The spacing Λ of medium holes is 5.23~5.83um, two non-conterminous medium holes are lacked in the medium hole array so as to form two fibre cores, the spacing of two fibre cores is 30~35um, d2 is changed in the diameter that each fiber core there are two medium holes, and d2 ＞ d1, so as to form four big medium holes.Currently invention addresses optical fiber gyroscope precision requirement and volume small form factor requirements, the length of Fibre Optical Sensor is doubled in same volume, and be able to ensure that polarization-maintaining performance, overcome cross-interference issue.
Description
Technical field
The present invention relates to the design and production field of photonic crystal fiber, is specifically a kind of twin-core polarization-maintaining photonic crystal light
It is fine.
Background technology
The application of angle/motion-sensing is increasingly extensive, such as mobile phone, unmanned aerial vehicle widely apply gyro as a sensor to
Realize positioning and control.And a kind of angular transducer that optical fibre gyro is applied as inertial navigation system, usage amount rise year by year.Tradition
Optical fibre gyro use panda protecting polarized light fiber or bow-tie type polarization maintaining optical fibre more.These sensors have been successfully applied in winged at present
The fields such as machine, automobile, ship.But with application to optical fiber gyroscope precision requirement and volume small form factor requirements, optical fibre gyro
One extremely urgent difficulty is that the performance of polarization-maintaining fiber coil is increasingly difficult in adapt to this requirement.
Photonic crystal fiber has extensively by studying for many years in fields such as information transmission, temperature sensing and spectroscopy
General application.The structure design of photonic crystal fiber is also varied.
Chinese patent (Application No. 201110029982.3)《A kind of double waveguide parallel polarization maintaining fiber and its manufacturer
Method》A kind of method that polarization maintaining optical fibre is manufactured by the way of two fibers/waveguides arranged side by side is described, this method is to use two simultaneously
Row prefabricated rods wire drawing or wire drawing at the same time in two fiber drawing furnaces in a fiber drawing furnace, by two optical fiber and one is listed in coating
The method risen.Its optical fiber structure is as shown in Figure 1, structure includes two fibre cores 1 and respective covering 2, stressed zone 3 and internal coating
4th, external coating 5.The design uses two panda optic fibres.There are the problem of be not account for increasing sensing under the same volume
The problem of device light path and the coupling demand of double-core photonic crystal fiber.
The content of the invention
The present invention designs from optical fiber gyroscope precision requirement and volume small form factor requirements and has manufactured a kind of twin-core polarization-maintaining
The length of Fibre Optical Sensor is doubled by photonic crystal fiber, the optical fiber in same volume.
The present invention proposes this twin-core polarization-maintaining photonic crystal fiber, in the radial direction two dimension for the quartz substrate that outside diameter is 125um
Be disposed with the medium holes of periodic arrangement on direction, the medium holes form hexagon medium hole array, each medium holes it is straight
Footpath is d1；The spacing Λ of medium holes is 5.23~5.83um, lacked in the medium hole array two non-conterminous medium holes from
And two fibre cores are formed, the spacing of two fibre cores is 30~35um, has the diameter of two medium holes in each fiber core
D2, and d2 ＞ d1 are changed to, so as to form four big medium holes.
The medium holes are airport, and the number of plies of the medium holes for being looped around fiber core is 6~7 layers.
The scope of the d1 is 2.5~3.0um, and the scope of the d2 is 6.5~8.5um.
One end of the double-core photonic crystal fiber is single curved waveguide, and the both ends of the curved waveguide are arranged in parallel,
Its radial spacing is 30~35um, is coupled respectively with two fibre cores.
One end of the double-core photonic crystal fiber is Y waveguide, the radial spacing of the two-arm of the Y waveguide for 30~
35um, couples with two fibre cores respectively.
One end of the double-core photonic crystal fiber is twin-core coupler, and the twin-core coupler includes two single light
Fibre, one end of two single-core fibers are arranged in parallel, its side all rubbing down, diameter reduction cause the fibre core spacing of two single-core fibers
For 30~35um, coupled respectively with two fibre cores of double-core photonic crystal fiber；The other end of two single-core fibers is free end.
The far field mode spot of described two fibre cores is ellipse, including major axis and short axle, and the length of major axis and short axle ratio is
1.2:1~1.7：1.
The major axis of described two far field mode spots is parallel with short axle difference, and one of two major axis and two short axles are one
On bar straight line.
Described four big medium holes are point-blank.
The major axis of described two far field mode spots is parallel with short axle difference, and two major axis are not point-blank, two short
Axis is also not point-blank.
The present invention is compared with the prior art possessed beneficial effect：Currently invention addresses optical fiber gyroscope precision requirement and
Volume small form factor requirements, design and have manufactured a kind of twin-core polarization-maintaining photonic crystal fiber, the optical fiber is in same volume by light
The length of fibre sensing is doubled, and is able to ensure that polarization-maintaining performance and overcomes cross-interference issue.This optical fiber and its apply in light
Fine gyro field still belongs to the first time.
Brief description of the drawings
Fig. 1 is the structure chart of the prior art；
Fig. 2 is the cross section topological diagram of embodiment 1；
Fig. 3 is the far field mode spot schematic diagram of embodiment 1；
Fig. 4 is crosstalk and fibre core spaced relationship curve map；
Fig. 5 is crosstalk and length relation curve map；
Fig. 6 is the Y waveguide coupling schematic diagram of embodiment 1；
Fig. 7 is the twin-core coupler structure schematic diagram of embodiment 1；
Fig. 8 is the cross section topological diagram of embodiment 2；
Fig. 9 is the twin-core coupler structure schematic diagram of embodiment 2；
Figure 10 is the cross section topological diagram of embodiment 3；
Figure 11 is the twin-core coupler structure schematic diagram of embodiment 3；
Embodiment
The polarization maintaining optical fibre that tradition is applied to optical fibre gyro is all an only fuse, its cladding outer diameter is 80um or 125um.
Under such design, the volume that each of which fuse takes is larger, and it is unfavorable to be minimized for optical fibre gyro.The light that the present invention designs
Fibre is that two fuses of placement, the volume that so each fuse occupies have been reduced to the circle of 62.5um diameters in the covering of 125um
Within cylinder.Or say under the same product around ring body, this fiber design allows longer light path, can improve optical fibre gyro
Precision.
Embodiment 1
Symmetrical twin-core polarization-maintaining photonic crystal fiber cross section topological diagram as shown in Figure 2, in the radial direction of quartz substrate
The airport of periodic arrangement is disposed with two-dimensional directional, airport forms regular hexagon medium hole array, each medium holes
The scope of diameter d1 is 2.5~3.0um.The spacing Λ of medium holes is 5.23~5.83um.The X-direction in figure, medium holes battle array
Two medium holes are lacked in row so as to form two fibre cores, the spacing of two fibre cores is 6 Λ, in the range of 31.4~35um.
D2 is changed in the diameter of two medium holes of each fibre core horizontal direction (i.e. X-direction) left and right, the diameter range of d2 is 6.5~
8.5um, so as to form four big medium holes.The most numbers of plies for being looped around the medium holes of single fiber core are 6 layers.
As shown in figure 3, two polarization-maintaining fibre cores are non-circular symmetric structures, the similar ellipse of its far field mode spot, there are one
Major axis and a short axle, and the length of major axis and short axle ratio is 1.2:1~1.7：1.
The center line of the center line and silica clad of the fiber core and air cladding layer is completely overlapped, as shown in Figure 2.It is this
Two major axis and short axle of optical fiber are all parallel constructions, specifically the two of this root optical fiber short axle in terms of Y-axis in straight line
On.Two major axis of this root optical fiber, 6 ∧ of deviation from X-axis.
For any one twin-core fiber, this optical fiber is used, it is necessary to consider cross-interference issue.Crosstalk refers to from one
The signal of a fibre core transmission has traveled to another fibre core.Crosstalk between the communications field, fuse can cause communications errors
The increase of rate, causes communication disruption when serious.For sensing, crosstalk is abnormal by the detection limit for causing test side, sensor
Correct sensing amount cannot be exported, causes faulty sensor.Simulation calculates fibre core spacing to cross talk effects in the present embodiment.Such as
Crosstalk and the curve map of fibre core spaced relationship shown in Fig. 4 see that crosstalk is less than -30dB when spacing is more than 27um.At the same time
In terms of another angle, crosstalk is increased with the increase of propagation distance, therefore simulation calculates transmission range from 100m
To influence of the distance to crosstalk of 3000m, as shown in Figure 5, it was confirmed that crosstalk is because distance increases 30 times from 100 meters, crosstalk increase
About 2dB.Accordingly, it is considered to arrive practical application reason, the scope by the line space design of twin-core into 30~35um, can be effectively ensured
The crosstalk of twin-core fiber does not influence the practical application of optical fiber.
In addition, the polarization holding capacity of twin-core polarization maintaining optical fibre is to determine another aspect of fiber optic applications, for this reason, this hair
The bright optical fiber for devising hole diameter size d1, air pitch of holes ∧ and diameter macropores size d2, ensures each of twin-core fiber
The cross-talk of a fuse is not more than the level of -30dB.The overall diameter of optical fiber is remained into 80~125um, the wherein model of d1 in design
It is 2.5-3um to enclose, and ∧ is 5.23-5.83um, and d2 is 6.5-8.5um, under such design, the major axis of the mould spot of fibre core：Short axle
The ratio between be not more than the level of -30dB in the cross-talks of 1.2~1.7 each fuse that can ensure twin-core fiber in the range of this,
Meet the requirement of application.
One end of above-mentioned optical fiber can be coupled by following three kinds of modes.
(1) one end face of curved waveguide uncoupling made of a lithium columbate crystal.The both ends of curved waveguide are parallel
Set, it is ensured that the radial spacing at its both ends is within 30~35um；Light from one end face of twin-core polarization-maintaining photonic crystal fiber its
In the injection of fuse, another end face is transferred to, due to the end face of two fibre core spacing and curved waveguide distance and polarization
Just the same, the light so coupled will be looped back in another fibre core of another end face and transmit.Laser is finally from entering afterwards
Another fuse of mouth end face projects.
(2) as shown in fig. 6, the 20 uncoupling low crosstalk twin-core polarization-maintaining photon of Y waveguide made of a lithium columbate crystal
Crystal optical fibre 21, the two-arm spacing of Y waveguide 20 is within 30-35um.In practical application, two fiber cores 22 will be directly right
The two-arm of Y waveguide should be coupled into, since the spacing range of two fuses of optical fiber is 30~35um, the Y waveguide of corresponding design
Radially spacing is also 30~35um to two-arm.The major and minor axis design of the two-arm of Y waveguide 20 is consistent with optical fiber 21, and according to major axis
The mode of major axis is aligned.
(3) the twin-core coupler uncoupling twin-core polarization-maintaining photonic crystal fiber made of two polarization maintaining optical fibre side rubbing downs
Two fibre cores.As shown in fig. 7, the panda protecting polarized light fiber fibre core spacing of two covering reductions is 30~35um.In this way, two fibres
Core is coupled into two fuses of fixing end of twin-core coupler by directly corresponding to, and major and minor axis design is consistent with optical fiber, and according to length
Axis is directed at the mode of major axis (major axis is upper and lower vertical direction, and spaced and parallel, and short axle is point-blank).Throw side
The other end for grinding the twin-core coupler of work is two independent polarization maintaining optical fibre free ends.(Fig. 7 cathetus is long axis direction)
Twin-core coupler can certainly be produced using bow-tie type polarization maintaining optical fibre side rubbing down.
Embodiment 2
Twin-core polarization-maintaining photonic crystal fiber cross section topological diagram as shown in Figure 8, its difference from Example 1 are
Mainly, its fibre core and covering all non-centrosymmetry：The center line of fiber core and air cladding layer in Fig. 8 (sit by the Y-direction i.e. in figure
Parameter) (center line is whole cross section by the center of the 6th airport of left number with the vertical center line of silica clad
Center line) there are half ∧ (∧ represent be the adjacent airport of any two center spacing) offset.The reason for offset, exists
In left side airport covering than 1 few one layer of embodiment.
In addition, fibre core is all disposed within Y-axis.In this way, two major axis in terms of X-axis point-blank, and two major axis
6 ∧ of deviation in terms of Y-axis.
Needed in view of observing axis, X-axis or Y-axis can also place symmetrical two mark points in optical fiber silica clad
(not shown), can be observed and be recognized with side so when carrying out optical fiber and device or optical fiber and optical fiber operates axis.
In coupling, three kinds of coupled modes in embodiment 1 can be used, are simply aligned in the long and short axis of far field mode spot
On adjust accordingly.Such as using mode in the 3rd, i.e., using twin-core coupler uncoupling when, two single polarization maintaining optical fibres
Structure is as shown in figure 9, point-blank, (Fig. 9 cathetus is major axis side to 6 ∧ of short axle parallel interval to major axis after the rubbing down of side
To).
Embodiment 3
Twin-core polarization-maintaining photonic crystal fiber cross section topological diagram as shown in Figure 10, its difference from Example 1 exist
In main, its fibre core is that X-axis and Y-axis are all asymmetrical.In Figure 10, the center line of air cladding layer and the center line of silica clad are complete
It is complete consistent, but the offset of the center line of two fibre cores and the center line of silica clad in Y-axis there are half of ∧, and be located at respectively
The arranged on left and right sides of silica clad Y-axis center line.A ∧ is spaced between two fibre cores in the X-axis, 6 are spaced in Y-direction
A ∧.Its far field mode spot is also similar ellipse, and there are a major axis and a short axle, and two major axis are all parallel with short axle
Structure, but two major axis 1 ∧ of deviation in terms of X-axis, 6 ∧ of deviation in terms of Y-axis.The fibre core and covering of this optical fiber are all rotations
Turn symmetrical.In the topological structure of the optical fiber, two fibre cores shift to install, it, which suppresses the performance of crosstalk, is also more improved.
With embodiment 2, it is contemplated that axis, which is observed, to be needed, and X-axis or Y-axis can also be placed symmetrically in optical fiber silica clad
Two mark point (not shown)s, can so be observed when carrying out optical fiber and device or optical fiber and optical fiber operates axis with side
And identification.
In coupling, three kinds of coupled modes in embodiment 1 can be used, are simply aligned in the long and short axis of far field mode spot
And adjusted accordingly in spacing.Such as using mode in the 3rd, i.e., using twin-core coupler uncoupling when, two single polarization-maintainings
The structure of optical fiber is as shown in figure 11, and long 1 ∧ of axis deviation after the rubbing down of side, (Figure 11 cathetus is major axis side to 6 ∧ of short axle deviation
To).
Above content is to combine specific embodiment further description made for the present invention, it is impossible to assert this hair
Bright specific implementation is confined to these explanations.
Claims (10)
1. a kind of twin-core polarization-maintaining photonic crystal fiber, is disposed with the radial direction two-dimensional directional of the quartz substrate of a diameter of 125um
The medium holes of periodic arrangement, the medium holes form hexagon medium hole array, a diameter of d1 of each medium holes；Its feature
It is：The spacing Λ of medium holes is 5.23~5.83um, in the medium hole array two non-conterminous medium holes of missing so as to
Two fibre cores are formed, the spacing of two fibre cores is 30~35um, is changed in the diameter that each fiber core there are two medium holes
For d2, and d2 ＞ d1, so as to form four big medium holes.
2. twin-core polarization-maintaining photonic crystal fiber as claimed in claim 1, it is characterised in that：The medium holes are airport, ring
The number of plies for being wound on the airport of the fiber core is 6~7 layers.
3. twin-core polarization-maintaining photonic crystal fiber as claimed in claim 2, it is characterised in that：The scope of the d1 is 2.5~
The scope of 3.0um, the d2 are 6.5~8.5um.
4. twin-core polarization-maintaining photonic crystal fiber as claimed in claim 3, it is characterised in that：The double-core photonic crystal fiber
One end is single curved waveguide, and the both ends of the curved waveguide are arranged in parallel, its radial spacing is 30~35um, respectively with two
Fibre core couples.
5. twin-core polarization-maintaining photonic crystal fiber as claimed in claim 3, it is characterised in that：The double-core photonic crystal fiber
One end is Y waveguide, and the radial spacing of the two-arm of the Y waveguide is 30~35um, is coupled respectively with two fibre cores.
6. twin-core polarization-maintaining photonic crystal fiber as claimed in claim 3, it is characterised in that：The double-core photonic crystal fiber
One end is twin-core coupler, and the twin-core coupler includes two single-core fibers, and one end of two single-core fibers is arranged in parallel, its
Side all rubbing down, diameter reduction make it that the fibre core spacing of two single-core fibers is 30~35um, respectively with double-core photon crystal light
Fine two fibre cores coupling；The other end of two single-core fibers is free end.
7. the twin-core polarization-maintaining photonic crystal fiber as described in any one in claim 4~6, it is characterised in that：It is described two
The far field mode spot of fibre core is all ellipse, including respective major axis and short axle, and the length of major axis and short axle ratio is 1.2:1~
1.7：1.
8. twin-core polarization-maintaining photonic crystal fiber as claimed in claim 7, it is characterised in that：The major axis of described two far field mode spots
It is parallel with short axle difference, and one of two major axis and two short axles are point-blank.
9. twin-core polarization-maintaining photonic crystal fiber as claimed in claim 8, it is characterised in that：Described four big medium holes are at one
On straight line.
10. twin-core polarization-maintaining photonic crystal fiber as claimed in claim 7, it is characterised in that：The length of described two far field mode spots
Axis is parallel with short axle difference, and two major axis are not point-blank, and two short axles are also not point-blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510362992.7A CN104880765B (en) | 2015-06-26 | 2015-06-26 | A kind of twin-core polarization-maintaining photonic crystal fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510362992.7A CN104880765B (en) | 2015-06-26 | 2015-06-26 | A kind of twin-core polarization-maintaining photonic crystal fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104880765A CN104880765A (en) | 2015-09-02 |
| CN104880765B true CN104880765B (en) | 2018-04-20 |
Family
ID=53948329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510362992.7A Active CN104880765B (en) | 2015-06-26 | 2015-06-26 | A kind of twin-core polarization-maintaining photonic crystal fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104880765B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932777A (en) * | 2018-12-12 | 2019-06-25 | 西南科技大学 | A kind of high sensitivity pressure sensing photonic crystal fiber and its pressure sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294808A (en) * | 2008-06-12 | 2008-10-29 | 浙江大学 | Optical fiber gyroscope based on double-core photon crystal optical fiber |
| CN101294807A (en) * | 2008-06-12 | 2008-10-29 | 浙江大学 | Full-photon crystal optical fiber gyroscope |
| CN101387519A (en) * | 2008-10-29 | 2009-03-18 | 北京航空航天大学 | Hollow photonic crystal fiber gyroscope |
| CN104111493A (en) * | 2014-07-11 | 2014-10-22 | 天津理工大学 | High-birefringence flat-dispersion double-core photonic crystal fiber and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001318268A (en) * | 2000-05-09 | 2001-11-16 | Totoku Electric Co Ltd | Tow-core, polarization maintaining optical fiber |
-
2015
- 2015-06-26 CN CN201510362992.7A patent/CN104880765B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294808A (en) * | 2008-06-12 | 2008-10-29 | 浙江大学 | Optical fiber gyroscope based on double-core photon crystal optical fiber |
| CN101294807A (en) * | 2008-06-12 | 2008-10-29 | 浙江大学 | Full-photon crystal optical fiber gyroscope |
| CN101387519A (en) * | 2008-10-29 | 2009-03-18 | 北京航空航天大学 | Hollow photonic crystal fiber gyroscope |
| CN104111493A (en) * | 2014-07-11 | 2014-10-22 | 天津理工大学 | High-birefringence flat-dispersion double-core photonic crystal fiber and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 双芯光子晶体光纤的结构设计与特性分析;黄惠;《中国知网》;20140501;全文 * |
| 高双折射双芯光子晶体光纤特性;李丹等;《中国激光》;20120430;第39卷(第4期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104880765A (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2538251B1 (en) | Multi-core optical fibre | |
| CN102103228B (en) | Double waveguide parallel polarization maintaining fiber and manufacturing method thereof | |
| CN100541244C (en) | Polarization maintaining optical fibre and optical fibre gyro | |
| CN112505824B (en) | Approximate single polarization thin-diameter solid core polarization-maintaining photonic crystal fiber with two-layer air hole structure | |
| JP5782502B2 (en) | Multi-core fiber and multi-core fiber connection method using the same | |
| CN104316040B (en) | A kind of novel optical fiber gyro optical interference circuit based on photonic crystal fiber | |
| CN101294808A (en) | Optical fiber gyroscope based on double-core photon crystal optical fiber | |
| CN101881854A (en) | Inner wall melt-embedded type multicore single mode polarization-maintaining fiber grating and manufacture method | |
| CN102914299A (en) | Fiber-optic gyroscope based on single-mode single polarized photon crystal optical fiber | |
| CN102213790B (en) | Be convenient to panda type polarization-preserving fiber and the manufacture method thereof of coiling | |
| CN107315221B (en) | A kind of thin footpath solid core polarization-maintaining photonic crystal fiber of double-layer structure | |
| CN108775898A (en) | A kind of fiber optic loop and preparation method thereof inhibiting optical fibre gyroscope magnetic field susceptibility | |
| CN102213791A (en) | Panda small-diameter polarization-maintaining optical fiber | |
| CN110118539B (en) | Optical fiber tilt angle sensor and method for overcoming temperature interference | |
| CN104714272B (en) | A kind of stress gradation type thin footpath panda protecting polarized light fiber | |
| CN104880765B (en) | A kind of twin-core polarization-maintaining photonic crystal fiber | |
| US20050084223A1 (en) | Polarization retaining photonic crystal fiber | |
| CN109211432B (en) | Method for testing temperature distribution of optical fiber ring in optical fiber gyroscope | |
| CN104765100B (en) | A kind of thin footpath reality core polarization-maintaining photonic crystal fiber of four-layer structure | |
| CN105278032A (en) | Stress-focusing shaft-alignment panda polarization-maintaining fiber and shaft alignment method thereof | |
| CN205229511U (en) | Stress focus counter shaft type panda polarization maintaining fiber | |
| CN103344231A (en) | Polarization-maintaining photonic crystal optical-fiber gyroscope device | |
| CN202256757U (en) | Small-diameter panda-type polarization maintaining optical fiber | |
| CN113031150B (en) | Hollow polarization maintaining optical fiber with core region having arc-shaped symmetrical thin-wall asymmetric structure | |
| TWM496768U (en) | Photonic crystal fiber structure of circular air fiber jacket elliptical air fiber core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200403 Address after: 510000 4th floor, No.3, Hengling 2nd Road, Tangdong, Tianhe District, Guangzhou, Guangdong Province Patentee after: Guangzhou Griffin Financial Information Technology Co., Ltd Address before: 518000 Guangdong city of Shenzhen province Nanshan District Shekou Sea from two phase 26 3A Patentee before: SHENZHEN TONGSHENG NEW TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210527 Address after: 518000 Room 101, building 1, No. 168, East District, Zhangge village, Zhangge community, Fucheng street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Tongsheng optoelectronics Co.,Ltd. Address before: 4 / F, No.3, Hengling 2nd Road, Tangdong, Tianhe District, Guangzhou, Guangdong 510000 Patentee before: Guangzhou Griffin Financial Information Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |