CN110308516A - A kind of mode conversion and application based on less fundamental mode optical fibre coupler - Google Patents
A kind of mode conversion and application based on less fundamental mode optical fibre coupler Download PDFInfo
- Publication number
- CN110308516A CN110308516A CN201910693864.9A CN201910693864A CN110308516A CN 110308516 A CN110308516 A CN 110308516A CN 201910693864 A CN201910693864 A CN 201910693864A CN 110308516 A CN110308516 A CN 110308516A
- Authority
- CN
- China
- Prior art keywords
- mode
- coupler
- less fundamental
- optical fibre
- fundamental mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/14—Mode converters
-
- 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
- G02B6/245—Removing protective coverings of light guides before coupling
-
- 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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06712—Polarising fibre; Polariser
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1106—Mode locking
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Lasers (AREA)
Abstract
A kind of mode conversion and application based on less fundamental mode optical fibre coupler, draws cone coupling using two less fundamental mode optical fibres, can convert in output port implementation pattern.Peel two less fundamental mode optical fibres off a little optical fiber coating first, crossed-symmetrical is not placed in parallel on the fixture for drawing cone machine；Then by the light source of port1 mouthfuls of input tap input basic mode LP01 of first optical fiber, suitable tensile speed is set, the weak coupling of two optical fiber may be implemented.If symmetrically mode coupler has suitable cone area's diameter less, high-order mode can be excited, and be coupled in output tap port 3, and the high-order mode of high-purity is caused to generate.Less fundamental mode optical fibre coupler (i.e. TMF-OC) can be inserted in mode locked fiber laser, and port1 and port2 are connected into laser, can be in port3(output2 in the case where realizing basic mode locking pulse) output column vector high-order mode hot spot.
Description
Technical field
The present invention relates to optical fiber optics and fiber laser technology field more particularly to a kind of based on less fundamental mode optical fibre coupler
Mode conversion and application.
Background technique
Due to its symmetry in vibration amplitude field and polarization field, the polarized column vector beam of radial direction or orientation draws in recent years
The strong interest of people is played.It suffers from and is widely applied in many fields such as material processing, single molecular imaging, optical sensings.
There are many kinds of the technologies for generating column vector beam, initially use spatial polarization selector, including biconial prism, spatial light
Modulator, sub-wave length grating etc..These are incompatible based on the device of spatial light and fibre system.Then, generation column is proposed
The concept of all optical fibre structure of vector beam has many advantages, such as flexibility, robustness and compatible with optical fiber telecommunications system.Currently,
It can produce column vector beam there are two types of all -fiber method.It is model selection coupler and utilization single mode optical fiber and few mould respectively
Offset between optical fiber splices and uses few mode fiber Bragg grating as mode selector.
In optic communication, sensing and optical fiber laser, made of two identical optical fiber (such as single mode optical fiber and polarization maintaining optical fibre)
Fused optical fibre coupler is widely used in optical fiber component, for separation/combination optical signal between the fibers.In recent years, few
Mode fiber flourishes because of its potential application in mode division multiplexing transmission, and the information of transmission can be simultaneously in simple optical fiber
Several spatial models on transmit.
Summary of the invention
Technical problem to be solved by the present invention lies in design not only to be able to satisfy high order mode excitation but also be able to satisfy division to want
The simple fiber element asked, and be inserted into mode locked fiber laser, in the case where realizing basic mode locking pulse, column can be exported
Vector high-order mode hot spot.
A kind of mode conversion and application based on less fundamental mode optical fibre coupler, the less fundamental mode optical fibre coupler, by less fundamental mode optical fibre
Peel off coat, symmetrical fused biconical taper processing carried out directly on fused conic clinker to certain size, using encapsulating material into
Row encapsulation process obtains；
The less fundamental mode optical fibre coupler is inserted into mode locked fiber laser, forms the mode-locked laser chamber of all -fiber；
The mode-locked laser chamber include pumping source, wavelength division multiplexer, Er-doped fiber, Polarization Controller, polarization-dependent isolator, with
And lack mode coupler and output coupler；Hot spot is surveyed in the output end of few mode coupler, observes lock simultaneously at output coupler
Mould state.
The output end of the pumping source is connected with the pumping input terminal of wavelength division multiplexer, and the output end of wavelength division multiplexer with
Er-doped fiber is connected；Er-doped fiber output end accesses polarization-dependent isolator, and the output end of polarization-dependent isolator accesses few mould
Coupler, so that the port3 in few mode coupler carries out mode output；
Access ordinary coupler in the port2 output end of few mode coupler, so as to observe simultaneously mode locking situation in laser cavity and
Mode exports situation.
Further, the less fundamental mode optical fibre coupler, since the evanscent field of different modes is in different size, so causing
The coupling sequence of different mode is also different, therefore can be available pure in the case where controlling certain drawing cone diameter range
Higher order mode output, and avoid the Mode Coupling of basic mode.
Further, using two duplicate less fundamental mode optical fibres, single mode and the conversion of less fundamental mode optical fibre making pattern are avoided
The step for needing prestretching to bore when device, the case where being just able to achieve phase matched, due to the mode field area of basic mode and high-order mode
Different, therefore, in the cone area for drawing cone less fundamental mode optical fibre, high-order mode can be preferentially coupled, as long as at this point, the suitable cone area of control is straight
Diameter avoids basic mode from coupling.
Further, few mode coupler can be on the basis of as ordinary coupler as light-splitting device, can be with
Implementation pattern conversion.
Further, the laser can observe mode-lock status while exporting high-order mode.
The invention adopts the above technical scheme compared with prior art, has following technical effect that
(1) less fundamental mode optical fibre of the present invention carry out production all -fiber melting coupler, using symmetrical fused biconical taper method prepare, and without pair
Less fundamental mode optical fibre carries out the processing of prestretching cone, and it is higher to export higher order mode purity for simple process.
(2) present invention insertion mode locked fiber laser in, while obtaining stable mode locking pulse string, obtain purity compared with
High column vector hot spot output.
(3) present invention use all optical fibre structure, can enclosed package, can continuous-stable work.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the less fundamental mode optical fibre coupler in the present invention.
Fig. 2 is the structural schematic diagram of the mode-locked laser based on less fundamental mode optical fibre coupler in the present invention.
(a) is the mode-locked laser output spectrum based on less fundamental mode optical fibre coupler in Fig. 3.
(b) is the train of pulse of the mode-locked laser output based on less fundamental mode optical fibre coupler in Fig. 3.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawings of the specification.
A kind of mode conversion and application based on less fundamental mode optical fibre coupler, the less fundamental mode optical fibre coupler, by less fundamental mode optical fibre
Peel off coat, symmetrical fused biconical taper processing carried out directly on fused conic clinker to certain size, using encapsulating material into
Row encapsulation process obtains.
The less fundamental mode optical fibre coupler is inserted into mode locked fiber laser, forms the mode-locked laser chamber of all -fiber.
The mode-locked laser chamber includes pumping source, wavelength division multiplexer, Er-doped fiber, Polarization Controller, the related isolation of polarization
Device and few mode coupler and output coupler；Hot spot is surveyed in the output end of few mode coupler, is seen simultaneously at output coupler
Survey mode-lock status.
The output end of the pumping source is connected with the pumping input terminal of wavelength division multiplexer, and the output end of wavelength division multiplexer with
Er-doped fiber is connected；Er-doped fiber output end accesses polarization-dependent isolator, and the output end of polarization-dependent isolator accesses few mould
Coupler, so that the port3 in few mode coupler carries out mode output.
Ordinary coupler is accessed in the port2 output end of few mode coupler, to observe the mode locking feelings in laser cavity simultaneously
Condition and mode export situation.
The less fundamental mode optical fibre coupler, since the evanscent field of different modes is in different size, so leading to different mode
Coupling sequence it is also different, therefore can be in the case where controlling certain drawing cone diameter range, available pure higher order mode
Output, and avoid the Mode Coupling of basic mode.
Using two duplicate less fundamental mode optical fibres, needed when avoiding single mode and less fundamental mode optical fibre making pattern converter
The step for wanting prestretching to bore, the case where being just able to achieve phase matched, since the mode field area of basic mode and high-order mode is different, because
This, in the cone area for drawing cone less fundamental mode optical fibre, high-order mode can be preferentially coupled, as long as at this point, the suitable cone area's diameter of control, avoids base
Mode coupling.
Few mode coupler can may be implemented mode and turn on the basis of as ordinary coupler as light-splitting device
It changes.
The laser can observe mode-lock status while exporting high-order mode.
The schematic diagram of mode-locked laser based on less fundamental mode optical fibre coupler is as shown in Figure 2.With traditional mode-locked fiber lasers
Device is similar, and current laser cavity includes including pumping source (PUMP), wavelength division multiplexer (WDM), Er-doped fiber (EDF), polarization control
Device (PC) processed, polarization-dependent isolator (PD-ISO), and few mode coupler (TMF-OC) and output coupler (OC).
It, can by the PC1 and PC2 in adjusting cavity when more than the modelocking threshold that pump power increases to 150 mW or so
To be easily carried out mode-lock operation.Fig. 3 (a) shows mode locking under the 150 mW pump powers with spectroanalysis instrument (OSA) measurement
The spectrum of pulse.Central wavelength is 1564.4 nm, and 3 decibels of line width is 11.2 nm.Corresponding spike train is as shown in Figure 3 (b),
25.25 ns are divided between two adjacent pulses.
The foregoing is merely better embodiment of the invention, protection scope of the present invention is not with above embodiment
Limit, as long as those of ordinary skill in the art's equivalent modification or variation made by disclosure according to the present invention, should all be included in power
In the protection scope recorded in sharp claim.
Claims (5)
1. a kind of mode conversion and application based on less fundamental mode optical fibre coupler, it is characterised in that:
The less fundamental mode optical fibre coupler peels off coat by less fundamental mode optical fibre, and symmetrical melting is carried out directly on fused conic clinker and is drawn
Cone processing is packaged processing using encapsulating material and obtains to certain size；
The less fundamental mode optical fibre coupler is inserted into mode locked fiber laser, forms the mode-locked laser chamber of all -fiber；
The mode-locked laser chamber include pumping source, wavelength division multiplexer, Er-doped fiber, Polarization Controller, polarization-dependent isolator, with
And lack mode coupler and output coupler；Hot spot is surveyed in the output end of few mode coupler, observes lock simultaneously at output coupler
Mould state；
The output end of the pumping source is connected with the pumping input terminal of wavelength division multiplexer, and the output end of wavelength division multiplexer and er-doped
Optical fiber is connected；Er-doped fiber output end accesses polarization-dependent isolator, and the output end of polarization-dependent isolator accesses few mode coupling
Device, so that the port3 in few mode coupler carries out mode output；
Access ordinary coupler in the port2 output end of few mode coupler, so as to observe simultaneously mode locking situation in laser cavity and
Mode exports situation.
2. a kind of mode conversion and its application, feature based on less fundamental mode optical fibre coupler according to claim 1 exists
In: the less fundamental mode optical fibre coupler, since the evanscent field of different modes is in different size, so leading to the coupling of different mode
Sequence is also different, therefore can be in the case where controlling certain drawing cone diameter range, available pure higher order mode output, and
Avoid the Mode Coupling of basic mode.
3. a kind of mode conversion and its application, feature based on less fundamental mode optical fibre coupler according to claim 1 exists
In: two duplicate less fundamental mode optical fibres are utilized, are needed when avoiding single mode and less fundamental mode optical fibre making pattern converter pre-
The case where drawing the step for boring, being just able to achieve phase matched, since the mode field area of basic mode and high-order mode is different,
The cone area of cone less fundamental mode optical fibre is drawn, high-order mode can be preferentially coupled, as long as at this point, the suitable cone area's diameter of control, avoids basic mode coupling
Conjunction.
4. a kind of mode conversion and its application, feature based on less fundamental mode optical fibre coupler according to claim 1 exists
In: mode conversion can may be implemented on the basis of as ordinary coupler as light-splitting device in few mode coupler.
5. a kind of mode conversion and its application, feature based on less fundamental mode optical fibre coupler according to claim 1 exists
In: the laser can observe mode-lock status while exporting high-order mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910693864.9A CN110308516A (en) | 2019-07-30 | 2019-07-30 | A kind of mode conversion and application based on less fundamental mode optical fibre coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910693864.9A CN110308516A (en) | 2019-07-30 | 2019-07-30 | A kind of mode conversion and application based on less fundamental mode optical fibre coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110308516A true CN110308516A (en) | 2019-10-08 |
Family
ID=68082441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910693864.9A Pending CN110308516A (en) | 2019-07-30 | 2019-07-30 | A kind of mode conversion and application based on less fundamental mode optical fibre coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110308516A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127535A (en) * | 2022-09-01 | 2022-09-30 | 中国船舶重工集团公司第七0七研究所 | Optical fiber gyroscope based on mode division multiplexing and precision improving method thereof |
| US11870210B2 (en) | 2018-06-05 | 2024-01-09 | South China University Of Technology | Transverse mode switchable all-fiber high-order mode Brillouin laser |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050094952A1 (en) * | 2003-10-29 | 2005-05-05 | Francois Gonthier | Optical coupler comprising multimode fibers and method of making the same |
| CN105591273A (en) * | 2016-03-16 | 2016-05-18 | 佛山科学技术学院 | Pulse optical fiber laser and method for realizing time domain pulse slicing by using the same |
| CN105870768A (en) * | 2016-05-28 | 2016-08-17 | 上海大学 | Optical vortex fiber laser based on mode conversion coupling |
| CN108233160A (en) * | 2018-03-13 | 2018-06-29 | 南京邮电大学 | A kind of pulsed column vector optical fiber laser based on model selection coupler |
| CN108390243A (en) * | 2018-04-18 | 2018-08-10 | 华南理工大学 | A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre |
| CN108551075A (en) * | 2018-06-05 | 2018-09-18 | 华南理工大学 | A kind of high-order mode Brillouin laser that all -fiber transverse mode is changeable |
| CN108627921A (en) * | 2018-05-07 | 2018-10-09 | 北京大学 | A kind of less fundamental mode optical fibre degenerate mode group demultiplexer and preparation method thereof based on fused biconical taper |
| CN108695679A (en) * | 2018-05-23 | 2018-10-23 | 南京邮电大学 | A kind of changeable column vector beam actively Q-switched optical fiber laser of angular/radial polarisation based on fiber fuse mode converter |
-
2019
- 2019-07-30 CN CN201910693864.9A patent/CN110308516A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050094952A1 (en) * | 2003-10-29 | 2005-05-05 | Francois Gonthier | Optical coupler comprising multimode fibers and method of making the same |
| CN105591273A (en) * | 2016-03-16 | 2016-05-18 | 佛山科学技术学院 | Pulse optical fiber laser and method for realizing time domain pulse slicing by using the same |
| CN105870768A (en) * | 2016-05-28 | 2016-08-17 | 上海大学 | Optical vortex fiber laser based on mode conversion coupling |
| CN108233160A (en) * | 2018-03-13 | 2018-06-29 | 南京邮电大学 | A kind of pulsed column vector optical fiber laser based on model selection coupler |
| CN108390243A (en) * | 2018-04-18 | 2018-08-10 | 华南理工大学 | A kind of high-order mode Brillouin optical fiber laser based on less fundamental mode optical fibre |
| CN108627921A (en) * | 2018-05-07 | 2018-10-09 | 北京大学 | A kind of less fundamental mode optical fibre degenerate mode group demultiplexer and preparation method thereof based on fused biconical taper |
| CN108695679A (en) * | 2018-05-23 | 2018-10-23 | 南京邮电大学 | A kind of changeable column vector beam actively Q-switched optical fiber laser of angular/radial polarisation based on fiber fuse mode converter |
| CN108551075A (en) * | 2018-06-05 | 2018-09-18 | 华南理工大学 | A kind of high-order mode Brillouin laser that all -fiber transverse mode is changeable |
Non-Patent Citations (2)
| Title |
|---|
| YU CAI等: "Generation of cylindrical vector beams in a mode-locked fiber laser using a mode-selective coupler", 《CHINESE OPTICS LETTERS》 * |
| 王腾等: "全光纤超快矢量光场的产生与研究进展", 《中国激光》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11870210B2 (en) | 2018-06-05 | 2024-01-09 | South China University Of Technology | Transverse mode switchable all-fiber high-order mode Brillouin laser |
| CN115127535A (en) * | 2022-09-01 | 2022-09-30 | 中国船舶重工集团公司第七0七研究所 | Optical fiber gyroscope based on mode division multiplexing and precision improving method thereof |
| CN115127535B (en) * | 2022-09-01 | 2022-11-04 | 中国船舶重工集团公司第七0七研究所 | Optical fiber gyroscope based on mode division multiplexing and precision improving method thereof |
| WO2024045451A1 (en) * | 2022-09-01 | 2024-03-07 | 中国船舶集团有限公司第七〇七研究所 | Fiber-optic gyroscope based on mode division multiplexing and precision improvement method therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105870768B (en) | Optical vortex optical fiber laser based on mode conversion coupling | |
| CN109616862B (en) | A kind of mode locking pulse optical fiber laser of based on SMS structure | |
| CN109217972B (en) | It is a kind of based on silicon substrate mode conversion on piece lack mould laser generation system and method | |
| CN104300344A (en) | High-power and tunable pulse fiber laser device | |
| CN100430815C (en) | Adjustable light pulse time-delay device with wide bandwidth and multiple gains based on stimulated brillouin scatter | |
| CN110308516A (en) | A kind of mode conversion and application based on less fundamental mode optical fibre coupler | |
| CN108089267B (en) | A kind of optical-fiber type broadband light vortex converter | |
| CN108233160A (en) | A kind of pulsed column vector optical fiber laser based on model selection coupler | |
| US20030031415A1 (en) | Polarization-combining fused-fiber optical coupler and method of producing the same | |
| CN108051890A (en) | A kind of high efficiency low-loss all -fiber melt mode selects coupler | |
| Ismaeel et al. | Removing the directional degeneracy of $ LP_ {11} $ mode in a fused-type mode selective coupler | |
| CN108832470A (en) | A kind of optical fiber laser | |
| CN107834351B (en) | 1-micron-band cylindrical vector fiber laser based on mode selection coupler | |
| CN109713562A (en) | Random fiber laser based on random Brillouin's dynamic raster | |
| CN110112639A (en) | All -fiber mode-locked laser based on the micro-nano fiber polarizer | |
| CN103825190B (en) | The method and device of high-energy basic mode laser is exported based on stimulated Brillouin scattering technology in large core fiber | |
| CN1099740C (en) | Multi-port coupled output femtosecond fiber laser | |
| CN105607382A (en) | Novel method for generating high-order vector dissipative solitons | |
| CN101916025A (en) | Device for inhibiting stimulated Brillouin scattering of optical fiber | |
| CN207884064U (en) | A kind of pulsed column vector optical fiber laser | |
| CN215222212U (en) | Quantum key distribution optical chip based on time phase coding | |
| CN104009377B (en) | Blue-light and ultraviolet-light enhancing super-continuum spectrum laser device of full-fiber structure | |
| CN101252249A (en) | haracter cavity passive mode-locking optical fiber laser | |
| CN105071204B (en) | High repetition pulse optical fiber laser | |
| CN108429121A (en) | A kind of passive coherent beam combination all-fiber laser based on ring cavity structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191008 |
|
| RJ01 | Rejection of invention patent application after publication |