CN105891957A - All-fiber one-order OAM (orbital angular momentum) mode generation system - Google Patents
All-fiber one-order OAM (orbital angular momentum) mode generation system Download PDFInfo
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- CN105891957A CN105891957A CN201610423400.2A CN201610423400A CN105891957A CN 105891957 A CN105891957 A CN 105891957A CN 201610423400 A CN201610423400 A CN 201610423400A CN 105891957 A CN105891957 A CN 105891957A
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- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2726—Optical coupling means with polarisation selective and adjusting means in or on light guides, e.g. polarisation means assembled in a light guide
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- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2753—Optical coupling means with polarisation selective and adjusting means characterised by their function or use, i.e. of the complete device
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Abstract
The embodiments of the invention provide an all-fiber one-order OAM (orbital angular momentum) mode generation system. The all-fiber one-order OAM mode generation system comprises a mode filtering unit, a mode disturbing unit and a mode generating unit, wherein all of the mode filtering unit, the mode disturbing unit and the mode generating unit belong to fiber type units; the mode filtering unit is used for filtering away high-order modes in fibers to obtain low-order linear mode LP01 modes, wherein the input of the mode filtering unit is obtained after light rays pass through a polarization controller; the mode disturbing unit is used for receiving the LP01 modes output by the mode filtering unit and converting the LP01 modes into LP11 modes; the mode generating unit is used for receiving the LP11 modes output by the mode disturbing unit and generating one-order OAM modes. According to the all-fiber one-order OAM mode generation system, the insertion loss of the one-order OAM mode generation system can be reduced.
Description
Technical field
The present invention relates to communication technical field, the single order OAM pattern particularly relating to a kind of all-fiber produces
System.
Background technology
Along with the current social continuous growth to communication bandwidth requirements, the capacity of single mode fiber communications system is
Approach shannon limit, for solving message capacity crisis on the horizon, the method for available mode division multiplexing, i.e.
Exist while utilizing light to propagate generation in a fiber and the different information of mutually non-interfering different mode transmission.
And the pattern in optical fiber comprise scalar mould composition LP (Liner Polarization, linearly polarized mode) pattern and
OAM (Orbital Angular Momentum, the orbital angular momentum) pattern of Vector Mode composition, therefore goes up
State the generation of both of which, be converted into a very important link when realizing mode division multiplexing.
Up to now, many systems producing OAM pattern have been suggested.Traditional single order OAM mould
Formula produces system, such as free space device, owing to it is passive device, application the most in a communications system
During insertion loss relatively big, and for example conventional planar optical waveguide technique, owing to its light wave output form is rectangle
Output, output mode does not mates with the input pattern of next link in communication system, therefore equally exists pattern
The problem producing relatively lossy during output.
Summary of the invention
The purpose of the embodiment of the present invention is to provide the single order OAM pattern generation system of a kind of all-fiber, with
Reduce the insertion loss of single order OAM pattern generation system.Concrete technical scheme is as follows:
The invention provides the single order OAM pattern generation system of a kind of all-fiber, including filter form unit, disturb
Form unit, pattern generation unit；Described filter form unit, disturb form unit and described pattern generation unit is equal
Belong to optical fiber class unit；
Described filter form unit filters the high-order mode in optical fiber thus obtains low order linear pattern LP01Mould, its
In, the input of filter form unit is obtained through Polarization Controller by light；
Described form unit of disturbing receives the LP of described filter form unit output01, by LP01Mould is converted into LP11Mould；
Described pattern generation unit disturbs, described in receiving, the LP that form unit exports11Mould, produces single order OAM
Pattern.
Optionally, described filter form unit by the seamless uniform winding of less fundamental mode optical fibre in insulating bar or stub institute
Constituting, wherein, the diameter range of described insulating bar or stub is not less than 0.5mm and no more than 3mm,
The described less fundamental mode optical fibre seamless winding number of turns on described insulating bar or stub is not less than 5 circles.
Optionally, disturb described in form unit interted successively by less fundamental mode optical fibre walk around in same plane equidistantly and
Insulating bar arranged in parallel or stub and formed, wherein, described spacing is for can hold less fundamental mode optical fibre
The distance passed.
Optionally, described pattern generation unit is oval few mould light by the tangent plane along fibre diameter
Fine or few mould polarization maintaining optical fibre is constituted.
The single order OAM pattern generation system of a kind of all-fiber that the embodiment of the present invention provides, by based on entirely
The single order OAM pattern generation system of optical fiber is bigger to solve single order OAM pattern generation system insertion loss
Problem.The system insertion loss provided due to the embodiment of the present invention is little, therefore improves single order OAM
Pattern generation system and the compatibility of Fiber Optical Communication System, and then whole optical fiber telecommunications system efficiency can be promoted.
Simultaneously because the feature that optical fiber volume is little, system easy of integrationization that the embodiment of the present invention is provided and with low cost.
Certainly, arbitrary product or the method for implementing the present invention must be not necessarily required to reach all the above excellent simultaneously
Point.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The knot of the single order OAM pattern generation system of a kind of all-fiber that Fig. 1 is provided by the embodiment of the present invention
Structure schematic diagram；
The single order OAM pattern generation system of a kind of all-fiber that Fig. 2 is provided by the embodiment of the present invention is disturbed
The structural representation of form unit；
The dress of the single order OAM pattern generation system of a kind of all-fiber that Fig. 3 is provided by the embodiment of the present invention
Put schematic diagram；
Fig. 4 is phase contrast and the relation schematic diagram of less fundamental mode optical fibre length of two orthogonal degenerate modes；
The one of the single order OAM pattern generation system of a kind of all-fiber that Fig. 5 is provided by the embodiment of the present invention
Plant the device schematic diagram of implementation；
The one of the single order OAM pattern generation system of a kind of all-fiber that Fig. 6 is provided by the embodiment of the present invention
Plant the monitoring device schematic diagram of implementation；
The one of the single order OAM pattern generation system of a kind of all-fiber that Fig. 7 is provided by the embodiment of the present invention
Plant the output result figure of filter membrane unit in implementation；
The one of the single order OAM pattern generation system of a kind of all-fiber that Fig. 8 is provided by the embodiment of the present invention
Plant the output result figure disturbing form unit in implementation；
The one of the single order OAM pattern generation system of a kind of all-fiber that Fig. 9 is provided by the embodiment of the present invention
Plant the output result figure of pattern generation unit in implementation；
The single order OAM pattern generation system of a kind of all-fiber that Figure 10 is provided by the embodiment of the present invention
A kind of monitoring result figure of implementation.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
Embodiments provide the single order OAM pattern generation system of a kind of all-fiber, to solve single order
The problem that OAM modular system insertion loss is bigger.
The single order OAM pattern generation system of a kind of all-fiber provided the embodiment of the present invention below enters
Row is introduced.
It is emphasized that the single order OAM pattern of a kind of all-fiber that the embodiment of the present invention provided is produced
Raw system is applied to optical fiber telecommunications system, and in fiber optic communication systems, the part of application native system can be light
The transmitting portion of fiber communication system.Wherein, the kind of this optical fiber telecommunications system can include voice communication, number
According to communication etc..
As it is shown in figure 1, the single order OAM pattern of a kind of all-fiber that the embodiment of the present invention is provided produces system
System, can include filtering form unit 110, disturbing form unit 120, pattern generation unit 130:
Filter form unit 110 is specifically for filtering the high-order mode in optical fiber, thus obtains low order linear pattern
LP01Mould；Disturb form unit 120 and receive the LP of described filter form unit output01, by LP01Mould is converted into LP11
Mould；Pattern generation unit 130 disturbs, described in receiving, the LP that form unit exports11Mould, produces single order OAM mould
Formula.
Described filter form unit 110, disturb form unit 120 and described pattern generation unit 130 belongs to optical fiber
Class unit.
Wherein, the input of filter form unit 110 is obtained through Polarization Controller by light, Polarization Controller
Implement principle and step be prior art, do not repeat at this.
It is emphasized that LP11Mould includes that two separate and that energy is the most mutually propagated is orthogonal
Degenerate mode LP11aAnd LP11b.The concrete grammar producing single order OAM can be to make two orthogonal letters
And mould LP11aAnd LP11bProduceIntegral multiple orThe phase contrast of integral multiple.Need further
It is emphasized that pattern generation unit 130 includes fast axle and slow axis, make two orthogonal degenerate mode LP11a
And LP11bThe concrete grammar producing above-mentioned phase contrast can be by: makes pattern generation unit 120 be exported
LP11The fast axle of the optical axis of pattern and pattern generation unit 130 or slow axis angle at 45 °, though orthogonal degeneracy
Mould LP11aAnd LP11bFast axle and slow axis transmission respectively along pattern generation unit 130.
It should be noted that above-mentioned single order OAM includes left-handed OAM and dextrorotation OAM.
Concrete, above-mentioned filter form unit by the seamless uniform winding of less fundamental mode optical fibre in insulating bar or stub institute
Constitute.Wherein, the diameter range of described insulating bar or stub is not less than 0.5mm and no more than 3mm,
The less fundamental mode optical fibre seamless winding number of turns on described insulating bar or stub is not less than 5 circles.
Wherein, less fundamental mode optical fibre is, the pattern quantity optical fiber less than 10.
It is emphasized that the length of above-mentioned insulating bar or stub by be wound around less fundamental mode optical fibre diameter and
The winding number of turns determines.For example, a diameter of 50um of less fundamental mode optical fibre, being wound around the number of turns is 10 circles,
So, the length of described insulating bar or stub is not less than 500um.Need further exist for it is emphasized that
The effect of described insulating bar or stub the most only makes the fixing existence of less fundamental mode optical fibre form spirally.
It is to say, when less fundamental mode optical fibre can form spirally fixing in the presence of, above-mentioned insulating bar or lead
Body rod must be not necessarily present.
Concrete, above-mentioned disturb form unit interted successively by less fundamental mode optical fibre walk around in same plane equidistantly and
Insulating bar arranged in parallel or stub and formed, concrete canoe can be as shown in Figure 2.Wherein,
Less fundamental mode optical fibre is, the pattern quantity optical fiber less than 10.
It is emphasized that Fig. 2 is merely illustrative less fundamental mode optical fibre and is wound around insulating bar or the mode of stub,
Less fundamental mode optical fibre therein and barred body not to optical fiber used time actually used and stub, insulating bar big
Little, thickness, quantity are defined.
Need further exist for it is emphasized that the quantity of above-mentioned insulating bar or stub is no less than 5, each
The diameter of root insulating bar or stub is not more than 3mm not less than 0.5mm simultaneously.Wherein, constitute above-mentioned
Disturb form unit can be single insulating bar, single stub, or can also be insulating bar with
The combination of stub.
It is understood that the spacing between insulating bar or stub is to accommodate lower less fundamental mode optical fibre
Distance, a diameter of 30um of the most above-mentioned less fundamental mode optical fibre, the then distance between insulating bar or stub
For 30um.
It is emphasized that the effect of described insulating bar or stub the most only makes less fundamental mode optical fibre with above-mentioned
The bending status of form is fixing to be existed.It is to say, when less fundamental mode optical fibre can be with the bending status of above-mentioned form
In the presence of Gu Ding, above-mentioned insulating bar or stub must be not necessarily present.
Concrete, above-mentioned pattern generation unit is oval few mould light by the tangent plane along fibre diameter
Fine or few mould polarization maintaining optical fibre is constituted.Wherein, the tangent plane along fibre diameter is that circular few mould protects polarisation
Fine increased stressed zone by common less fundamental mode optical fibre and obtain, can be that panda type polarization-preserving fiber, bow-tie type guarantor are inclined
Optical fiber, oval fuse polarization maintaining optical fibre or oval covering polarization maintaining optical fibre etc..Meanwhile, above-mentioned straight along optical fiber
The less fundamental mode optical fibre that the tangent plane in footpath is oval can be suppressed in real time by common less fundamental mode optical fibre and form, and specifically presses
Method processed can be, is compressed to directly by the common less fundamental mode optical fibre that diametric(al) tangent plane is circular by external force
Direction, footpath tangent plane is oval less fundamental mode optical fibre.It should be noted that the dynamics now suppressed, the most above-mentioned
Transverse and the difference of short axle, the biggest, then the efficiency of optical fiber generation single order OAM is the highest.And pressed
The length of the few mould light of system, is determined by compacting dynamics, compacting dynamics is the biggest, needs few mould light of compacting
Fine length is the shortest；Compacting dynamics is the least, and the length needing the less fundamental mode optical fibre of compacting is the longest.
The single order OAM pattern generation system of a kind of all-fiber that the embodiment of the present invention provides, as it is shown on figure 3,
By OAM pattern generation system based on all-fiber, produce and meet next link input mould in communication system
The single order OAM pattern of formula, the problem bigger to solve single order OAM pattern generation system insertion loss.By
The system insertion loss provided in the embodiment of the present invention is little, therefore improves single order OAM pattern and produces system
System and the compatibility of Fiber Optical Communication System, and then whole optical fiber telecommunications system efficiency can be promoted.Producing
Cheng Zhong, the embodiment of the present invention is by the system being made up of less fundamental mode optical fibre and few mould polarization maintaining optical fibre, efficiently by one
Rank LP pattern is converted into single order OAM pattern.Simultaneously because the feature that optical fiber volume is little, the embodiment of the present invention
System easy of integrationization that thered is provided and with low cost.Certainly, arbitrary product or the method for implementing the present invention must not
Necessarily need to reach all the above advantage simultaneously.
A kind of specific implementation of the present embodiment is set forth below, the embodiment of the present invention and the present invention are implemented
Principle involved by example is described in detail:
Common less fundamental mode optical fibre has one group of LPl1Pattern, each LPl1Mould all has two orthogonal degenerate modes,
As the two orthogonal degenerate mode LPl1aAnd LPl1bBetween phase contrast when being pi/2,3 pi/2, it is possible to
To OAM pattern (i.e. OAM±l=LPl1a±i×LPl1b).Orthogonal degenerate mode is at the fast axle of polarization maintaining optical fibre and slow axis
Propagation constant on direction is different, and the phase contrast of the output port of optical fiber can be write as: Δ φ is phase contrast, and λ is wavelength, and Δ neff is LPFG, and L is optical fiber
Length.If therefore the direction in space of two orthogonal degenerate modes is alignd with fast axle and slow axis respectively, by changing
Length L of darkening fibre or wavelength X, it is possible to the phase contrast realizing orthogonal modes is pi/2 or (3 π)/2, and then
Produce OAM+1Or OAM-1Both of which.
Concrete, work as LP11When the slow axis (or fast axle) of the optical axis of mould and optical fiber is in 45° angle, LP11aAnd LP11b
Align with the slow axis of optical fiber and fast axle the most respectively.Under certain wavelength, two orthogonal LP11aAnd LP11b
Between phase contrast and the length of less fundamental mode optical fibre linear as shown in Figure 4.The phase of two orthogonal degenerate modes
Potential difference, by being that a bat is long during 0 to 2 π, when the phase contrast of two orthogonal degenerate modes is become pi/2 from 0, is squeezed into
Pattern from LP patterns of change to OAM pattern；Phase contrast from pi/2 become π time, then ellipse area model is changing into separately
An outer linear polarization pattern mutually orthogonal with squeezing into pattern.When phase contrast is 3 pi/2s to 2 π, repeat again
This change procedure, is finally clapping long LbOriginal pattern is recovered at place.So the length of design optical fiber makes two
The phase contrast of orthogonal mode is pi/2 and 3 pi/2s, it is possible to produce OAM at outfan+1/OAM-1。
As it is shown in figure 5, light first passes around Polarization Controller, it is different inclined that light source is produced by Polarization Controller
The light in direction of shaking is adjusted to polarization direction and aligns with the slow axis of few mould polarization maintaining optical fibre.Then light beam passes through one section
Less fundamental mode optical fibre is connected to a mode filter, and mode filter filters the high-order mode in optical fiber thus obtains pure LP01
Mould.Then the LP that will obtain01Mould passes through a mode scrambler, by LP01Mould is converted into LP11Mould, this LP11Pattern
The slow axis of optical axis and few mould polarization maintaining optical fibre be 45° angle.Then LP pattern disarrangement device being converted into11Mould is squeezed into
In the few mould polarization maintaining optical fibre of panda type, according to aforementioned principles, work as LP11The optical axis of mould and the slow axis of optical fiber (or fast axle)
During in 45° angle, LP11aAnd LP11bAlign with the slow axis of optical fiber and fast axle the most respectively.LP11aAnd LP11bBiography
Broadcast constant and have a difference, by controlling wavelength and the length of polarization maintaining optical fibre, thus it is possible to vary outgoing LP11a
And LP11bPhase contrast, thus obtain OAM pattern.
, in order to monitor the telling on of the embodiment of the present invention further, on the basis of Fig. 5 as shown in Figure 6,
The embodiment of the present invention also provides for a kind of monitoring device.Use 1:1 fiber coupler that light is divided into energy equalization
Two-beam line, a branch of single order OAM pattern provided through the Polarization Controller entrance embodiment of the present invention produces system
System；Another Shu Zuowei reference beams is used for monitoring, and this monitors light through convex lens, polaroid at spectroscope
Locate the output with the single order OAM pattern generation system through lens to interfere, followed by computer control
Result of interference is shown on a computer display by device processed.Monitoring single order OAM pattern produces the result of process
As shown in Fig. 7, Fig. 8, Fig. 9, Figure 10.
It should be noted that in this article, the relational terms of such as first and second or the like be used merely to by
One entity or operation separate with another entity or operating space, and not necessarily require or imply these
Relation or the order of any this reality is there is between entity or operation.And, term " includes ", " bag
Contain " or its any other variant be intended to comprising of nonexcludability, so that include a series of key element
Process, method, article or equipment not only include those key elements, but also include being not expressly set out
Other key elements, or also include the key element intrinsic for this process, method, article or equipment.?
In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that including
The process of described key element, method, article or equipment there is also other identical element.
Each embodiment in this specification all uses relevant mode to describe, phase homophase between each embodiment
As part see mutually, what each embodiment stressed is the difference with other embodiments.
For system embodiment, owing to it is substantially similar to embodiment of the method, so the comparison described
Simply, relevant part sees the part of embodiment of the method and illustrates.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.
All any modification, equivalent substitution and improvement etc. made within the spirit and principles in the present invention, are all contained in
In protection scope of the present invention.
Claims (6)
1. the single order OAM pattern generation system of an all-fiber, it is characterised in that include filter form unit,
Disturb form unit, pattern generation unit；Described filter form unit, disturb form unit and described pattern generation unit
Belong to optical fiber class unit；
Described filter form unit filters the high-order mode in optical fiber thus obtains low order linear pattern LP01Mould, its
In, the input of filter form unit is obtained through Polarization Controller by light；
Described form unit of disturbing receives the LP of described filter form unit output01, by LP01Mould is converted into LP11Mould；
Described pattern generation unit disturbs, described in receiving, the LP that form unit exports11Mould, produces single order OAM mould
Formula.
System the most according to claim 1, it is characterised in that
Described filter form unit is made up of in insulating bar the seamless uniform winding of less fundamental mode optical fibre, wherein, described
The diameter range of insulating bar or stub is not less than 0.5mm and no more than 3mm, and described less fundamental mode optical fibre exists
The seamless winding number of turns on described insulating bar or stub is not less than 5 circles.
System the most according to claim 1, its characteristic is,
Described filter form unit is made up of in stub the seamless uniform winding of less fundamental mode optical fibre, wherein, described
The diameter range of insulating bar or stub is not less than 0.5mm and no more than 3mm, and described less fundamental mode optical fibre exists
The seamless winding number of turns on described insulating bar or stub is not less than 5 circles.
System the most according to claim 1, it is characterised in that
Described form unit of disturbing is interted successively by less fundamental mode optical fibre and walks around in same plane equidistantly and parallel
Row insulating bar and formed, wherein, described spacing is to hold the distance that less fundamental mode optical fibre passes.
System the most according to claim 1, it is characterised in that
Described form unit of disturbing is interted successively by less fundamental mode optical fibre and walks around in same plane equidistantly and parallel
Row stub and formed, wherein, described spacing is to hold the distance that less fundamental mode optical fibre passes.
6. according to the system described in any one of claim 1-5, it is characterised in that
Described pattern generation unit is oval less fundamental mode optical fibre or few by the tangent plane along fibre diameter
Mould polarization maintaining optical fibre is constituted.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108089267A (en) * | 2017-12-01 | 2018-05-29 | 华中科技大学 | A kind of optical-fiber type broadband light vortex converter |
| CN108761651A (en) * | 2018-08-23 | 2018-11-06 | 北京邮电大学 | OAM mode multiplexings device, manufacturing method and multiplexing method |
| CN108988946A (en) * | 2017-05-31 | 2018-12-11 | 国网信息通信产业集团有限公司 | transmission mode distribution method and system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004013992A1 (en) * | 2002-08-02 | 2004-02-12 | The Furukawa Electric Co., Ltd | Polarization mode dispersion compensator, polarization mode dispersion compensating method, and its application to optical communication system |
| CN1497279A (en) * | 2002-09-04 | 2004-05-19 | ض� | Adjustable dispersion compensator with less fundamental mode optical fibre and switchable mode changer |
| US7010195B2 (en) * | 2002-03-15 | 2006-03-07 | Fitel Usa Corp. | Fiber optic grating with tunable polarization dependent loss |
| CN202929294U (en) * | 2012-09-27 | 2013-05-08 | 哈尔滨工程大学 | Emergent light spot strength homogenizing mode-disturbing device for optical fiber |
| CN103698842A (en) * | 2013-12-18 | 2014-04-02 | 江苏大学 | Optical fiber mode add-drop multiplexer |
| CN104483735A (en) * | 2014-11-10 | 2015-04-01 | 武汉锐科光纤激光器技术有限责任公司 | All-fiber mode converter and light system |
| CN204271442U (en) * | 2014-12-25 | 2015-04-15 | 华南师范大学 | The generation device of a kind of polarization-orbital angular momentum mixing Entangled State single photon |
| CN104834059A (en) * | 2015-05-15 | 2015-08-12 | 北京邮电大学 | Mode conversion method in optical transmission process and device thereof |
| CN204556023U (en) * | 2015-04-03 | 2015-08-12 | 潘帅东 | Based on two parameteric light fiber sensors of polarization maintaining optical fibre |
| CN105629381A (en) * | 2016-01-04 | 2016-06-01 | 北京邮电大学 | Optical fiber mode revolver, full-fiber mode multiplexer and demultiplexer |
-
2016
- 2016-06-15 CN CN201610423400.2A patent/CN105891957B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7010195B2 (en) * | 2002-03-15 | 2006-03-07 | Fitel Usa Corp. | Fiber optic grating with tunable polarization dependent loss |
| WO2004013992A1 (en) * | 2002-08-02 | 2004-02-12 | The Furukawa Electric Co., Ltd | Polarization mode dispersion compensator, polarization mode dispersion compensating method, and its application to optical communication system |
| CN1497279A (en) * | 2002-09-04 | 2004-05-19 | ض� | Adjustable dispersion compensator with less fundamental mode optical fibre and switchable mode changer |
| CN202929294U (en) * | 2012-09-27 | 2013-05-08 | 哈尔滨工程大学 | Emergent light spot strength homogenizing mode-disturbing device for optical fiber |
| CN103698842A (en) * | 2013-12-18 | 2014-04-02 | 江苏大学 | Optical fiber mode add-drop multiplexer |
| CN104483735A (en) * | 2014-11-10 | 2015-04-01 | 武汉锐科光纤激光器技术有限责任公司 | All-fiber mode converter and light system |
| CN204271442U (en) * | 2014-12-25 | 2015-04-15 | 华南师范大学 | The generation device of a kind of polarization-orbital angular momentum mixing Entangled State single photon |
| CN204556023U (en) * | 2015-04-03 | 2015-08-12 | 潘帅东 | Based on two parameteric light fiber sensors of polarization maintaining optical fibre |
| CN104834059A (en) * | 2015-05-15 | 2015-08-12 | 北京邮电大学 | Mode conversion method in optical transmission process and device thereof |
| CN105629381A (en) * | 2016-01-04 | 2016-06-01 | 北京邮电大学 | Optical fiber mode revolver, full-fiber mode multiplexer and demultiplexer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988946A (en) * | 2017-05-31 | 2018-12-11 | 国网信息通信产业集团有限公司 | transmission mode distribution method and system |
| CN108988946B (en) * | 2017-05-31 | 2020-03-31 | 国网信息通信产业集团有限公司 | Transmission mode distribution method and system |
| CN108089267A (en) * | 2017-12-01 | 2018-05-29 | 华中科技大学 | A kind of optical-fiber type broadband light vortex converter |
| CN108761651A (en) * | 2018-08-23 | 2018-11-06 | 北京邮电大学 | OAM mode multiplexings device, manufacturing method and multiplexing method |
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|---|---|
| CN105891957B (en) | 2019-01-08 |
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