CN1584646A - Dynamic optical coupler - Google Patents
Dynamic optical coupler Download PDFInfo
- Publication number
- CN1584646A CN1584646A CN 200410024987 CN200410024987A CN1584646A CN 1584646 A CN1584646 A CN 1584646A CN 200410024987 CN200410024987 CN 200410024987 CN 200410024987 A CN200410024987 A CN 200410024987A CN 1584646 A CN1584646 A CN 1584646A
- Authority
- CN
- China
- Prior art keywords
- optical fibre
- fibre group
- phase board
- output optical
- darman raster
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title abstract description 17
- 239000013307 optical fiber Substances 0.000 claims abstract description 73
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 16
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000013519 translation Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012940 design transfer Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
Landscapes
- Mechanical Light Control Or Optical Switches (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
A dynamic optical coupler is characterized in that an input optical fiber group, a collimating lens group, a Dammann grating phase plate, a convergent lens and an output optical fiber group are sequentially arranged on a light path, the input optical fiber group is positioned on the front focal surface of the collimating lens, the Dammann grating phase plate is positioned on the rear focal surface of the collimating lens group, the front focal surface of the convergent lens is coincided with the rear focal surface of the collimating lens group, the output optical fiber group is positioned on the rear focal surface of the convergent lens, the input end of each optical fiber of the output optical fiber group is provided with a self-collimating lens, the Dammann grating phase plate is provided with a grating area and a non-grating area and a shifter for pushing the dammann grating phase plate to shift, and the numerical aperture of the convergent lens is matched with the numerical aperture of the self-. Compared with the prior art, the invention not only has the functions of the switch type beam splitter and the coupler, but also can realize the dynamic conversion of beam splitting and beam combining.
Description
Technical field
The present invention relates to optical communication, particularly a kind of dynamic photo-coupler, it utilizes the diffraction optical element Darman raster to realize the dynamic optically-coupled and the light beam splitting of greater number.
Background technology
Along with the development of science and technology and society, people increase gradually to the demand of information.Optical fiber communication has surmounted traditional cable communication with advantages such as its high speed, high capacity, good confidentiality, low costs, is the direction of 21st century development communication technologies.How to realize the N road to the M road and the N road just become the key issue of accelerating the optical communication technique development to the dynamic optical coupling technology of single channel.
The conventional fused-tapered fiber coupler of the many employings of beam splitting in the optical communication at present, be characterized in that loss is low, simple in structure, be convenient to processing and manufacturing, shortcoming is that manufacturing technology needs complicated predispersed fiber to handle, comprise prestretched, pre-etching etc., and the fused biconical taper number should not be very big, is not suitable for the coupling and the beam splitting of big figure optical fiber fully.1 * N coupling mechanism of the big output port number that a plurality of fiber coupler polyphones are set up will inevitably bring higher loss and lower performance.The narrow broadband that the relevant loss of high polarization and bigger heterogeneity cause makes fiber coupler can not adapt to the requirement of multiple fiber optic network to broadband 1 * N fiber coupler.
The diffraction optical element volume is little, in light weight, is highly suitable in the optical communication switch and uses.Technology [1] (J.J.Pan and T. Zhu formerly, " 1 * N fiber coupler employing diffractiveoptical element ", Electronics Letters 35, No.4,324-325 (1999)) once proposed to realize 1 * N optical coupling structure with diffraction optical element, but do not propose the structure of dynamic optically-coupled, promptly this structure can only realize the light beam splitting, light and bundle can not be realized, beam splitting and the also conversion between the bundle can not be realized.Technology [2] (Zhou Changhe formerly, Zhao Xin, Liu Li people, " the Dynamic Coupling device that is used for optical communication ", the applying date: October 22 calendar year 2001, application number: 01131972.0, publication number: CN1343894A, open day: on April 10th, 2002, application was national: proposed the dynamic photo-coupler based on even number type Darman raster China), can realize dynamic beam splitting and close bundle, this has advanced binary optical and optical-fibre communications cross-application to a great extent, but its shifter moves required precision higher (micron dimension), and is limited to the isocandela hot spot output of even number, is of limited application.
Summary of the invention
The technical problem to be solved in the present invention is to overcome above-mentioned the deficiencies in the prior art, proposes a kind of dynamic photo-coupler, and this photo-coupler has switching mode beam splitter and coupling mechanism function, can also realize beam splitting and the dynamic translation of closing bundle.
Technical solution of the present invention is as follows:
A kind of dynamic photo-coupler, it is characterized in that on a light path, being followed successively by the input optical fibre group, collimation lens set, the Darman raster phase board, convergent lens and output optical fibre group, described input optical fibre group is positioned on the front focal plane of collimation lens, the Darman raster phase board is positioned at the front focal plane of convergent lens on the back focal plane of collimation lens set and the back focal plane of collimation lens set overlaps, the output optical fibre group is positioned on the back focal plane of convergent lens, the input end of each optical fiber of output optical fibre group all has self-focus lens, described Darman raster phase board has grating region and no-raster zone is arranged, it promotes the shifter of its displacement in addition, and the numerical aperture of convergent lens and the numerical aperture of self-focus lens are complementary.
Described input optical fibre group is different with the number of fibers of output optical fibre group.
Described input optical fibre group is identical with the number of fibers of output optical fibre group.
Described Darman raster phase board is an one dimension, its have grating region and no-raster zone account for respectively this Darman raster phase board the left and right sides half.
Described Darman raster phase board can be a two-dimentional Darman raster phase board (3), and its Darman raster partly accounts for 1/4 of this two dimension Darman raster phase board, and corresponding output optical fibre group also should be a two-dimensional array output optical fibre group.
Each root optical fiber of described two-dimentional output optical fibre group all has self-focus lens, and described two-dimentional Darman raster phase board has grating region and no-raster zone are arranged, and has its two-dimentional shifter along X-axis and Y-axis conversion displacement of promotion.
Introduce the characteristic of Darman raster below, and how to utilize the characteristic of Darman raster to realize function of the present invention.The design details of relevant Darman raster can be consulted technology [3] (ChangheZhou, and Liren Liu, " Numerical study of Dammann array illuminators ", Appl.Opt.34,5961-5969 (1995)) formerly.
The Darman raster of volume coordinate modulation type two-value position phase is the optical element that is used to produce two-dimentional convergent beam array that is proposed by H.Dammann.It is the isocandela hot spot of certain dot matrix number to the Fraunhofer diffraction pattern sample that incident light wave produces, and at aspects such as multiple imaging, two-dimensional array illumination, pattern-recognition, fiber couplers using value is arranged all.
The process of considering the design Darman raster is: for a rectangular element, its transmitance is distributed as
Wherein x is the distance of position phase inversion point, x
kBe the distance of k position phase inversion point, x
K+1It is the distance of k+1 position phase inversion point.Under paraxial condition, its Fourier transform is so
α wherein
k=2n π x
k, n is that the order of diffraction of Darman raster is inferior, α
kThe corresponding phase angle that is k position phase inversion o'clock on n order diffraction level time.
For zero level spectrum point intensity be
To non-zero order, its spectrum point intensity is
For the odd number array illuminator, diffraction efficiency is defined as:
For the even arrays luminaire, diffraction efficiency is defined as:
It more than is exactly the diffraction characteristic of Darman raster.
Technique effect of the present invention:
The dynamic photo-coupler of the present invention is based on Darman raster and sets up, and can realize the beam splitting of Optical Fiber Transmission, can realize the bundle that closes of Optical Fiber Transmission again, can also realize the beam splitting of Optical Fiber Transmission and the dynamic translation of closing bundle, and operation is quite easy.
On the main structure of the present invention with not being both of technology formerly: formerly be a phase board in the technology [1], and the type of designate bits phase-plate not, and the present invention adopts the Darman raster phase board, and have shifter, by moving of phase board, to realize dynamic beam splitting and the function of closing bundle; What formerly use in the technology [2] is the Darman raster phase board of two complementations, and its alignment precision requires very high, and the moving range of shifter is (micron dimension) in half period, and the present invention's employing is single phase board, accuracy requirement reduces greatly, and the shifter moving range is very big, and is easy and simple to handle.
Because the making characteristics of Darman raster phase board among the present invention, less displacement just can realize the beam splitting of light beam and close the switching function of bundle, and can realize the dynamic translation of beam splitter and bundling device, it is little to have volume, in light weight, the characteristics of saving energy are simpler than the control of the mechanical optical switch in the technology formerly, speed is fast, because the manufacturing process of phase board is the technology compatible mutually with the large scale integrated circuit technology, therefore, can duplicate production in enormous quantities, cost can reduce, and obvious superiority is arranged.Particularly be applied to present mechanical light switching technology difficult realize in during extensive optical switching array, the present invention just more has special superiority, and the using value of particular importance is arranged.
The present invention can also be generalized to the form of two dimension, utilizes two-dimentional Darman raster, adopts two-dimensional encoded form just can realize the coupling of the photokinesis in the input optical fibre is outputed in the two-dimentional output optical fibre array, realizes the function of two-dimentional beam splitting; After X-axis (or Y-axis) certain displacement, being equivalent to phasic difference is zero, and the light beam in the input optical fibre group just is coupled in the optical fiber that is placed on convergent lens focus place fully, has realized the function that two dimension is closed bundle.
Description of drawings
The dynamic fiber coupler beam splitting of Fig. 1 the present invention view.
The dynamic fiber coupler of Fig. 2 the present invention closes pencil attitude synoptic diagram.
The structural drawing of Fig. 3 Darman raster phase board 3 required for the present invention.
Fig. 4 is the output luminous point when input beam all acts on the Dammam phase board grating region is arranged that receives with infrared CCD (C2741-03 of Hamamatsu company type)
Fig. 5 is the output luminous point when input beam all acts on the no-raster zone that receives with infrared CCD (C2741-03 of Hamamatsu company type).
Fig. 6 is the required two-dimentional Darman raster phase board of two-dimensional space Dynamic Coupling device (is example with 3 * a 3) structural representation.
Embodiment
See also Fig. 1 earlier, Fig. 1 is a specific embodiment of the present invention, as seen from the figure, the formation of dynamic photo-coupler of the present invention: be input optical fibre group 1, collimation lens set 2, Darman raster phase board 3, convergent lens 4 and output optical fibre group 5 successively on a light path.Wherein input optical fibre group 1 is placed on the front focal plane of collimation lens 2, phase board 3 is placed on the back focal plane of collimation lens set 2, also be on the front focal plane of convergent lens 4, output optical fibre group 5 is placed on the back focal plane of convergent lens 4, the number of fibers of two optical fibre set can be identical, also can be different, be designated as N and M.Output optical fibre group 5 has self-focus lens 6.Phase board 3 has shifter 7.Being complementary of the numerical aperture of convergent lens 4 and self-focus lens.
Darman raster phase board 3 is divided into grating region 31 and no-raster zone 32, and respectively accounts for this Darman raster phase board 3 half, as shown in Figure 3.
Wherein shifter 7 promotes phase boards 3 and moves, and what make this phase board 3 has grating region 31 and no-raster zone 32 to be in the light beam respectively to work.Do the time spent as grating region 31, N bundle light from input optical fibre group 1 passes through phase board 3 again through collimation lens set 2 collimations, again behind convergent lens 4, assemble through the self-focus lens 6 of output optical fibre group 5 each root optical fiber and evenly equally to be diffracted in the output optical fibre group 5, realize dividing a beam function.When shifter 6 promotes phase board 3, when worked in no-raster zone 32, N from input optical fibre group 1 restraints light is all converged to the output optical fibre group 5 that is arranged in convergent lens 4 focus places by convergent lens 4 a optical fiber, the function that has realized closing bundle, as shown in Figure 2.
List concrete structure and the parameter of Fig. 1 embodiment below:
, behind collimation lens set 2 collimations, impinge upon on the phase board 3 by the light beam of the 1550nm of outgoing in 1 * 4 the input optical fibre group 1, behind phase board 3 diffraction,, be coupled into again in the output optical fibre group 5 converging on the back focal plane of convergent lens 4 on the self-focus lens 6.The core diameter of optical fiber is 1.8mm, the mechanical scale of shifter 7 is 5 μ m, the parameter of design phase board 3: the cycle is d=100 μ m, area of raster is 20mm * 20mm, it is 1 * 8 Darman raster, made by the binary optical technology, the concrete parameter of the position phase inversion point in its one-period is as shown in the table.In the table: the concrete numerical value (unit: 100 μ m) of the position phase inversion point in 1 * 8 Darman raster one-period (100 μ m)
| ????x 0 | ????x 1 | ????x 2 | ????x 3 | ????x 4 | ????x 5 | ????x 6 | ????x 7 |
| ????0 | ???6.185 | ???17.654 | ???20.858 | ???31.797 | ???50.000 | ???56.185 | ???67.654 |
| ????x 8 | ????x 9 | ????x 10 |
| ??70.858 | ??81.797 | ??100.000 |
The chrome mask version is made by the electron beam plating method, and by contact transfer printing and exposure, the design transfer on the mask is to the photoresist of substrate of glass.That we use is chromium plate (the chromium type LRC that scribbles the AZ1805 photoresist, the thick 145nm of chromium, the thick 570nm of glue), after developing, dechromising, the substrate of glass of utilizing wet-chemical etch methods will have the mask pattern is carried out etching in corrosive liquid, with the required position of the downward etching of the glass basic surface phase degree of depth.At last through dechromising, step such as cleaning, obtain required phase board.Refractive index n=1.51362 of the corresponding 1550nm wavelength of the substrate of glass that we use, position phase etching depth is 1.53 μ m.Shifter 7 moves the Darman raster phase board, when making incident light all act on grating region, all light from input optical fibre group 1 are diffracted in 1 * 8 output optical fibre group 5 equably, every road output optical fibre all can receive the signal of 1 * 4 input optical fibre group any a tunnel simultaneously, and Here it is has realized the function of beam splitting.When shifter 7 promotes phase board 3, when making incident light all act on the no-raster zone, all are all collected on the self-focus lens of the output optical fibre that is positioned at its focus place by convergent lens 4 from the light in the input optical fibre group 1, after coupling, enter in this output optical fibre, other output optical fibre of next door is collected less than the light from input optical fibre group 1, and Here it is has finished the function of closing bundle.
The present invention can be generalized to two-dimensional space (structural drawing is with Fig. 1 and Fig. 2).Make required output array number two-dimentional Darman raster structure as shown in Figure 6, two-dimentional Darman raster phase board is divided into grating region and no-raster zone.Output beam dot matrix feature according to the two-dimentional Darman raster phase board that adopts is arranged two-dimentional output optical fibre array, just the coupling of the photokinesis in the input optical fibre can be outputed in the two-dimentional output optical fibre array, realizes the function of two-dimentional beam splitting.Adopt the two-dimension displacement device, after X-axis (or Y-axis) certain displacement, being equivalent to phasic difference is zero, and the light beam in the input optical fibre group 1 just is coupled in the optical fiber that is placed on convergent lens 4 focus places fully, has realized the function that two dimension is closed bundle.Its principle of work is similar to the situation of one dimension, does not give unnecessary details at this.
Claims (6)
1, a kind of dynamic photo-coupler, it is characterized in that input optical fibre group (1) is arranged successively on a light path, collimation lens set (2), Darman raster phase board (3), convergent lens (4) and output optical fibre group (5), described input optical fibre group (1) is positioned on the front focal plane of collimation lens (2), Darman raster phase board (3) is positioned on the back focal plane of collimation lens set (2), the back focal plane of the front focal plane of described convergent lens (4) and collimation lens set (2) overlaps, output optical fibre group (5) is positioned on the back focal plane of convergent lens (4), each root optical fiber of output optical fibre group (5) all has self-focus lens (6), described Darman raster phase board (3) has has grating region (31) and no-raster zone (32), it also has the shifter (7) that promotes its displacement, and the numerical aperture of the numerical aperture of convergent lens (4) and self-focus lens (6) is complementary.
2, dynamic photo-coupler according to claim 1 is characterized in that described input optical fibre group (1) is different with the number of fibers of output optical fibre group (5).
3, dynamic photo-coupler according to claim 1 is characterized in that described input optical fibre group (1) is identical with the number of fibers of output optical fibre group (5).
4, dynamic photo-coupler according to claim 1 is characterized in that described Darman raster phase board (3) is an one dimension, its have grating region (31) and no-raster zone (32) account for respectively this Darman raster phase board (3) the left and right sides half.
5, dynamic photo-coupler according to claim 1, it is characterized in that described Darman raster phase board (3) can be a two-dimentional Darman raster phase board (3), its Darman raster partly accounts for 1/4 of this two dimension Darman raster phase board (3), and corresponding output optical fibre group (5) also should be a two-dimensional array output optical fibre group (5).
6, dynamic photo-coupler according to claim 5, it is characterized in that described two-dimentional output optical fibre group (5) has self-focus lens (6), described two-dimentional Darman raster phase board (3) has has grating region (31) and no-raster zone (32), and has its two-dimentional shifter (7) along X-axis and Y-axis conversion displacement of promotion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410024987 CN1243261C (en) | 2004-06-08 | 2004-06-08 | Dynamic optical coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410024987 CN1243261C (en) | 2004-06-08 | 2004-06-08 | Dynamic optical coupler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1584646A true CN1584646A (en) | 2005-02-23 |
| CN1243261C CN1243261C (en) | 2006-02-22 |
Family
ID=34601086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410024987 Expired - Fee Related CN1243261C (en) | 2004-06-08 | 2004-06-08 | Dynamic optical coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1243261C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007115432A1 (en) * | 2006-04-10 | 2007-10-18 | Renyong Ma | An optical diode light collection device |
| CN104793312A (en) * | 2014-01-20 | 2015-07-22 | 无锡亮源激光技术有限公司 | Optical module of optical grating illumination device |
| CN106547079A (en) * | 2017-01-17 | 2017-03-29 | 中国科学院上海光学精密机械研究所 | Real-time three-dimensional laser fluorescence microscopic imaging device |
| CN109341581A (en) * | 2018-10-31 | 2019-02-15 | 暨南大学 | The three-dimensional measurement mould group and working method of lateral parity combination Darman raster |
| CN114236713A (en) * | 2021-12-21 | 2022-03-25 | 四川都乐光电科技有限公司 | Coupling lens with optical shunt |
-
2004
- 2004-06-08 CN CN 200410024987 patent/CN1243261C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007115432A1 (en) * | 2006-04-10 | 2007-10-18 | Renyong Ma | An optical diode light collection device |
| CN104793312A (en) * | 2014-01-20 | 2015-07-22 | 无锡亮源激光技术有限公司 | Optical module of optical grating illumination device |
| CN106547079A (en) * | 2017-01-17 | 2017-03-29 | 中国科学院上海光学精密机械研究所 | Real-time three-dimensional laser fluorescence microscopic imaging device |
| CN106547079B (en) * | 2017-01-17 | 2018-11-20 | 中国科学院上海光学精密机械研究所 | Real-time three-dimensional laser fluorescence microscopic imaging device |
| CN109341581A (en) * | 2018-10-31 | 2019-02-15 | 暨南大学 | The three-dimensional measurement mould group and working method of lateral parity combination Darman raster |
| CN109341581B (en) * | 2018-10-31 | 2020-12-11 | 暨南大学 | Three-dimensional measurement module of transverse odd-even combined Dammann grating and working method |
| CN114236713A (en) * | 2021-12-21 | 2022-03-25 | 四川都乐光电科技有限公司 | Coupling lens with optical shunt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1243261C (en) | 2006-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1243261C (en) | Dynamic optical coupler | |
| CN102253605A (en) | Multiple parallel laser beam grating direct writing device and grating direct writing method | |
| CN113835158B (en) | Free space light and photon chip end face coupling method | |
| CN109239851A (en) | A kind of fiber coupler and its manufacture and use method based on linear polarization | |
| CN105549155A (en) | Planar monolithic integrated wavelength division multiplexer-demultiplexer and realization method thereof | |
| CN1145817C (en) | Dynamic optical coupler for optical communication | |
| CN109031530A (en) | A kind of fiber coupler and its manufacture and use method based on circular polarization | |
| CN202904125U (en) | A linear light beam shaping device using a total reflection method | |
| CN100462747C (en) | Three-step beam splitting grating and manufacturing method thereof | |
| US20110080566A1 (en) | Method for replicating production of 3d parallax barrier | |
| CN2530275Y (en) | Optical fiber dynamic coupler | |
| CN113094927B (en) | Method for realizing multi-channel information coding by using novel optical film | |
| CN112099139B (en) | Chessboard type imager and implementation method | |
| CN1256600C (en) | Back incidence type high density quartz reflection grating | |
| CN110082856A (en) | A kind of phase mask plate structure inscribed simultaneously for multi fiber grating | |
| CN1740830A (en) | Optical interconnection coupling structure based on soft photoetching | |
| CN211236471U (en) | Multichannel optical orbital angular momentum beam shaping optical system | |
| CN1284015C (en) | Optical fiber switch of diffraction grating | |
| CN1145812C (en) | phase plate for light beam scanner | |
| CN1246715C (en) | Wave division multiplexer based on more sub-rasters for flat-top etching and diffracting raster | |
| CN111427119A (en) | Method for preparing integrated crystal optical waveguide | |
| CN1145058C (en) | Lighting method of hexagonal phase array | |
| CN116203681A (en) | Super-structured surface multi-core optical fiber fan-in fan-out device | |
| CN2492860Y (en) | Phase plate manufactured based on binary optics technology | |
| CN117806050B (en) | Vector optical demultiplexing device for reflective Pancharam-Berry phase modulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060222 Termination date: 20100608 |