Mode coupling in large-mode-area double-cladding chirped and tilted fiber Bragg gratings

被引：8

作者：

Rao, Binyu ^{[1
,2
]}

Zhao, Xiaofan ^{[1
,2
]}

Li, Hongye ^{[1
,2
]}

Tian, Xin ^{[1
,2
]}

Wang, Meng ^{[1
,2
,3
]}

Wang, Zefeng ^{[1
,2
,3
]}

机构：

[1] Natl Univ Def Technol, Coll Adv Interdisciplinary Studies, Changsha 410073, Peoples R China

[2] State Key Lab Pulsed Power Laser Technol, Changsha 410073, Peoples R China

[3] Hunan Prov Key Lab High Energy Laser Technol, Changsha 410073, Peoples R China

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 07期

基金：

中国国家自然科学基金;

关键词：

STIMULATED RAMAN-SCATTERING; SUPPRESSION; FABRICATION;

D O I：

10.1364/OE.420771

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recently, chirped and tilted fiber Bragg gratings (CTFBGs) have received great attention because they can realize suppression of stimulated Raman scattering (SRS) in high-power fiber lasers. In this study, the possible coupling between the core modes and cladding modes in CTFBGs inscribed in large-mode-area double-cladding fibers is investigated for the first time. Theoretical results show that the coupling between the LP11 mode and cladding modes would destroy the transmission spectra envelope only considering the coupling of LP01 for single-mode CTFBGs, which will degenerate the SRS suppression performance. This was confirmed experimentally by measuring the spectral response under different mode excitations. A reliable method is demonstrated to ease the LP11-excitation-induced spectral deterioration by choosing an appropriate chirp rate for the inscription of CTFBGs, which is useful for improving the Raman suppression effect of large-mode-area double-cladding CTFBGs in high-power fiber lasers. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：11277 / 11292

页数：16

共 27 条

[1]

Bialiayeu A, 2015, SENSITIVITY ENHANCEM

[2] Long-period fibre grating writing with a slit-apertured femtosecond laser beam (λ=1026 nm) [J].

Dostovalov, A. V. ;

Wolf, A. A. ;

Babin, S. A. .

QUANTUM ELECTRONICS, 2015, 45 (03) :235-239

[3] 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

[4] Off-axis ultraviolet-written fiber Bragg gratings for directional bending measurements [J].

Feng, Dingyi ;

Qiao, Xueguang ;

Albert, Jacques .

OPTICS LETTERS, 2016, 41 (06) :1201-1204

[5] Control of higher-order cladding mode excitation with tailored femtosecond-written long period fiber gratings [J].

Heck, Maximilian ;

Schwartz, Georg ;

Kraemer, Ria G. ;

Richter, Daniel ;

Goebel, Thorsten A. ;

Matzdorf, Christian ;

Tuennermann, Andreas ;

Nolte, Stefan .

OPTICS EXPRESS, 2019, 27 (04) :4292-4303

[6]

Hu I., 2012, LASERS SOURCES RELAT

[7] Simplified modelling the mode instability threshold of high power fiber amplifiers in the presence of photodarkening [J].

Jauregui, Cesar ;

Otto, Hans-Juergen ;

Stutzki, F. ;

Limpert, J. ;

Tuennermann, A. .

OPTICS EXPRESS, 2015, 23 (16) :20203-20218

[8] 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

[9]

Kashyap R, 2010, FIBER BRAGG GRATINGS, 2ND EDITION, P1

[10] Suppression of stimulated Raman scattering in a high power Yb-doped fiber amplifier using a W-type core with fundamental mode cut-off [J].

Kim, J. ;

Dupriez, P. ;

Codemard, C. ;

Nilsson, J. ;

Sahu, J. K. .

OPTICS EXPRESS, 2006, 14 (12) :5103-5113

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