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1. (WO2019000833) METHOD FOR ADJUSTING DEGREE OF ISOLATION, OPTICAL FIBER ISOLATOR, AND FIBER LASER
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Pub. No.: WO/2019/000833 International Application No.: PCT/CN2017/113853
Publication Date: 03.01.2019 International Filing Date: 30.11.2017
IPC:
G02F 1/09 (2006.01)
G PHYSICS
02
OPTICS
F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1
Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01
for the control of the intensity, phase, polarisation or colour
09
based on magneto-optical elements, e.g. exhibiting Faraday effect
Applicants:
深圳市创鑫激光股份有限公司 MAXPHOTONICS CO., LTD. [CN/CN]; 中国广东省深圳市 宝安区沙井芙蓉工业区芙蓉三路创鑫激光产业园A2栋A3栋2-3层A4栋A5栋 Building A2A3 (Floor 2-3) A4A5A Maxphotonics Industrial Park, Third Furong Road, Furong Industrial Area, Shajing Shenzhen, Guangdong 518104, CN
Inventors:
曹际龙 CAO, Jilong; CN
张浩泰 ZHANG, Haotai; CN
陶新峻 TAO, Xinjun; CN
邓杰 DENG, Jie; CN
符照森 FU, Zhaosen; CN
蒋峰 JIANG, Feng; CN
Agent:
深圳市世联合知识产权代理有限公司 SL INTELLECTUAL PROPERTY CO., LTD.; 中国广东省深圳市 福田区彩田南路中深花园大厦B座1105室 Room 1105, Block B Zhongshen Garden, Caitian South Road, Futian District Shenzhen, Guangdong 518033, CN
Priority Data:
201710523094.430.06.2017CN
201710523692.130.06.2017CN
201710523694.030.06.2017CN
Title (EN) METHOD FOR ADJUSTING DEGREE OF ISOLATION, OPTICAL FIBER ISOLATOR, AND FIBER LASER
(FR) PROCÉDÉ D'AJUSTEMENT DE DEGRÉ D'ISOLATION, ISOLATEUR À FIBRES OPTIQUES ET LASER À FIBRE
(ZH) 调节隔离度的方法、光纤隔离器以及光纤激光器
Abstract:
(EN) A method for adjusting the degree of isolation, an optical fiber isolator, and a fiber laser. The method for adjusting the degree of isolation is applied to an optical fiber isolator. A magneto-optical rotation crystal (22) and a half-wave plate (24) are provided in the beam isolation structure (2) of the optical fiber isolator. The optical rotation angle of the magneto-optical rotation crystal (22) is represented by angle θ, where angle θ = K × λ × B × L; the half-wave plate (24) forward rotates the polarization direction of forward incident e polarized light and o polarized light by angle β when the magneto-optical rotation crystal (22) forward rotates the polarization direction of the forward incident e polarized light and o polarized light by angle θ. When angle θ changes, the half-wave plate (24) is rotated so that angle β is equal to angle θ. At this time, the magneto-optical rotation crystal (22) and the half-wave plate (24) have the maximum degree of isolation of reverse light. Also disclosed is a fiber laser comprising the optical fiber isolator. The optical fiber isolator facilitates simplification of the structure and improvement in use convenience.
(FR) L'invention concerne un procédé d'ajustement de degré d'isolation, un isolateur à fibres optiques et un laser à fibre. Le procédé d'ajustement du degré d'isolation est appliqué à un isolateur à fibres optiques. Un cristal de rotation magnéto-optique (22) et une plaque demi-onde (24) sont disposés dans la structure d'isolation de faisceau (2) de l'isolateur à fibres optiques. L'angle de rotation optique du cristal de rotation magnéto-optique (22) est représenté par l'angle θ, avec l'angle θ = K × λ × B × L ; la plaque demi-onde (24) vers l'avant fait tourner la direction de polarisation de la lumière polarisée e incidente vers l'avant et de la lumière polarisée o par l'angle β lorsque le cristal de rotation magnéto-optique (22) vers l'avant fait tourner la direction de polarisation de la lumière polarisée e incidente vers l'avant et de la lumière polarisée o par l'angle θ. Lorsque l'angle θ change, la plaque demi-onde (24) est tournée de sorte que l'angle β soit égal à l'angle θ. À ce moment-là, le cristal de rotation magnéto-optique (22) et la plaque demi-onde (24) ont le degré maximal d'isolation de la lumière inverse. L'invention concerne également un laser à fibre comprenant l'isolateur à fibres optiques. L'isolateur de fibre optique facilite la simplification de la structure et l'amélioration de la commodité d'utilisation.
(ZH) 一种调节隔离度的方法、光纤隔离器以及光纤激光器。该调节隔离度的方法应用于光纤隔离器,光纤隔离器的光束隔离结构(2)中设置有磁旋光晶体(22)和半波片(24)。以角度θ表示磁旋光晶体(22)的旋光角度,角度θ=K×λ×B×L;当磁旋光晶体(22)将正向入射的e偏振光和o偏振光的偏振方向正向旋转角度θ时,半波片(24)将正向入射的所述e偏振光和所述o偏振光的偏振方向正向旋转角度β。当角度θ发生变化时,转动所述半波片(24),使得角度β等于角度θ,此时磁旋光晶体(22)与半波片(24)对反向光的隔离度最大。还公开了包括该光纤隔离器的光纤激光器。该光纤隔离器有利于简化结构,提高使用的便利性。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Chinese (ZH)
Filing Language: Chinese (ZH)