Suppressing stimulated Raman scattering in kW-level continuous-wave MOPA fiber laser based on long-period fiber gratings

被引：52

作者：

Jiao, Kerong ^{[1
]}

Shen, Hua ^{[1
,3
]}

Guan, Zhiwen ^{[1
]}

Yang, Feiyan ^{[1
]}

Zhu, Rihong ^{[1
,2
]}

机构：

[1] Nanjing Univ Sci & Technol, MIIT Key Lab Adv Solid Laser, Nanjing 210094, Peoples R China

[2] Nanjing Univ Sci & Technol, Sch Elect Engn & Optoelect Technol, Nanjing 210094, Peoples R China

[3] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

来源：

OPTICS EXPRESS | 2020年 / 28卷 / 05期

关键词：

BRAGG GRATINGS; FABRICATION; SENSOR;

D O I：

10.1364/OE.384760

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Two long-period fiber gratings (LPFGs) used to separately suppress the stimulatedRaman-scattering (SRS) in the seed and amplifier of kW-level continuous-wave (CW) MOPA fiber laser are developed in this paper. A process that combines constant-low-temperature and dynamic-high-temperature annealing was employed to reduce the thermal slopes of 10/130 gm (diameter of core/cladding fiber) and 14/250 LPFGs, used in the seed and amplifier respectively, from 0.48 degrees C/W to 0.04 degrees C/W and from 0.53 degrees C/W to 0.038 degrees C/W. We also proposed a reduced-sensitivity packaging method to effectively reduce the influence of axial-stress, bending, and environmental temperature on LPFGs. Further, we established a kW-level CW MOPA system to test SRS suppression performance of the LPFGs. Experimental results demonstrated that the SRS suppression ratios of the 10/130 and 14/250 LPFGs exceed 97.0% and 99.6 degrees 70, respectively. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：6048 / 6063

页数：16

共 23 条

[1] Influence of a backward reflection on low-threshold mode instability in Yb3+-doped few-mode fiber amplifiers [J].

Antipov, Oleg ;

Kuznetsov, Maxim ;

Alekseev, Dmitriy ;

Tyrtyshnyy, Valentin .

OPTICS EXPRESS, 2016, 24 (13) :14871-14879

[2] Long Period Gratings in Multicore Optical Fibers for Directional Curvature Sensor Implementation [J].

Barrera, David ;

Madrigal, Javier ;

Sales, Salvador .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 2018, 36 (04) :1063-1068

[3] Analysis of apodized phase-shifted long-period fiber gratings [J].

Chan, FYM ;

Chiang, KS .

OPTICS COMMUNICATIONS, 2005, 244 (1-6) :233-243

[4] Cladding-mode resonances in short- and long-period fiber grating filters [J].

Erdogan, T .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1997, 14 (08) :1760-1773

[5] Fiber grating spectra [J].

Erdogan, T .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 1997, 15 (08) :1277-1294

[6] New technologies in endourology -: High-power thulium fiber laser ablation of urinary tissues at 1.94 μm [J].

Fried, NM ;

Murray, KE .

JOURNAL OF ENDOUROLOGY, 2005, 19 (01) :25-31

[7] Ultraviolet-initiated reactions of H2 with germanosilicate fibers and H2 concentration dependence of the Bragg wavelength of a fiber grating [J].

Fu, LB ;

Tan, G ;

Xu, WJ ;

An, HL ;

Cui, XM ;

Lin, XZ ;

Liu, HD .

OPTICS LETTERS, 2000, 25 (08) :527-529

[8] Modeling the inhibition of stimulated Raman scattering in passive and active fibers by lumped spectral filters in high power fiber laser systems [J].

Jansen, Florian ;

Nodop, Dirk ;

Jauregui, Cesar ;

Limpert, Jens ;

Tuennermann, Andreas .

OPTICS EXPRESS, 2009, 17 (18) :16255-16265

[9] Fabrication of kW-level chirped and tilted fiber Bragg gratings and filtering of stimulated Raman scattering in high-power CW oscillators [J].

Jiao, Kerong ;

Shu, Jian ;

Shen, Hua ;

Guan, Zhiwen ;

Yang, Feiyan ;

Zhu, Rihong .

HIGH POWER LASER SCIENCE AND ENGINEERING, 2019, 7

[10]

Kah P, 2013, ENGINEERING, V5, P700, DOI [10.4236/eng.2013.59083, DOI 10.4236/ENG.2013.59083]

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