Broadband bidirectional Brillouin-Raman random fiber laser with ultra-narrow linewidth

doi:10.1088/1674-1056/ad09cb

中国物理B ›› 2024, Vol. 33 ›› Issue (2): 24206-024206.doi: 10.1088/1674-1056/ad09cb

Broadband bidirectional Brillouin-Raman random fiber laser with ultra-narrow linewidth

Qian Yang(杨茜), Yang Li(李阳), Hui Zou(邹辉), Jie Mei(梅杰), En-Ming Xu(徐恩明), and Zu-Xing Zhang(张祖兴)^†

Advanced Photonic Technology Laboratory, College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

收稿日期:2023-07-20 修回日期:2023-10-26 接受日期:2023-11-06 出版日期:2024-01-16 发布日期:2024-01-25
通讯作者: Zu-Xing Zhang E-mail:zxzhang@njupt.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 62175116 and 91950105), the 1311 Talent Plan of Nanjing University of Posts and Telecommunications, China, and the Postgraduate Research & Practice Innovation Program, Jiangsu Province, China (Grant No. SJCX21_0276).

Broadband bidirectional Brillouin-Raman random fiber laser with ultra-narrow linewidth

Qian Yang(杨茜), Yang Li(李阳), Hui Zou(邹辉), Jie Mei(梅杰), En-Ming Xu(徐恩明), and Zu-Xing Zhang(张祖兴)^†

Advanced Photonic Technology Laboratory, College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Received:2023-07-20 Revised:2023-10-26 Accepted:2023-11-06 Online:2024-01-16 Published:2024-01-25
Contact: Zu-Xing Zhang E-mail:zxzhang@njupt.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 62175116 and 91950105), the 1311 Talent Plan of Nanjing University of Posts and Telecommunications, China, and the Postgraduate Research & Practice Innovation Program, Jiangsu Province, China (Grant No. SJCX21_0276).

摘要/Abstract

摘要： We present a Brillouin-Raman random fiber laser (BRRFL) with full-open linear cavity structure to generate broadband Brillouin frequency comb (BFC) with double Brillouin-frequency-shift spacing. The incorporation of a regeneration portion consisting of an erbium-doped fiber and a single-mode fiber enables the generation of broadband BFC. The dynamics of broadband BFC generation changing with the pump power (EDF and Raman) and Brillouin pump (BP) wavelength are investigated in detail, respectively. Under suitable conditions, the bidirectional BRRFL proposed can produce a flat-amplitude BFC with 40.7-nm bandwidth ranging from 1531 nm to 1571.7 nm, and built-in 242-order Brillouin Stokes lines (BSLs) with double Brillouin-frequency-shift spacing. Moreover, the linewidth of single BSL is experimentally measured to be about 2.5 kHz. The broadband bidirectional narrow-linewidth BRRFL has great potential applications in optical communication, optical sensing, spectral measurement, and so on.

关键词: random laser, fiber laser, stimulated Brillouin scattering (SBS), stimulated Raman scattering (SRS)

Abstract: We present a Brillouin-Raman random fiber laser (BRRFL) with full-open linear cavity structure to generate broadband Brillouin frequency comb (BFC) with double Brillouin-frequency-shift spacing. The incorporation of a regeneration portion consisting of an erbium-doped fiber and a single-mode fiber enables the generation of broadband BFC. The dynamics of broadband BFC generation changing with the pump power (EDF and Raman) and Brillouin pump (BP) wavelength are investigated in detail, respectively. Under suitable conditions, the bidirectional BRRFL proposed can produce a flat-amplitude BFC with 40.7-nm bandwidth ranging from 1531 nm to 1571.7 nm, and built-in 242-order Brillouin Stokes lines (BSLs) with double Brillouin-frequency-shift spacing. Moreover, the linewidth of single BSL is experimentally measured to be about 2.5 kHz. The broadband bidirectional narrow-linewidth BRRFL has great potential applications in optical communication, optical sensing, spectral measurement, and so on.

Key words: random laser, fiber laser, stimulated Brillouin scattering (SBS), stimulated Raman scattering (SRS)

中图分类号: (Resonators, cavities, amplifiers, arrays, and rings)

42.60.Da

42.60.Fc (Modulation, tuning, and mode locking) 42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)

Qian Yang(杨茜), Yang Li(李阳), Hui Zou(邹辉), Jie Mei(梅杰), En-Ming Xu(徐恩明), and Zu-Xing Zhang(张祖兴). Broadband bidirectional Brillouin-Raman random fiber laser with ultra-narrow linewidth[J]. 中国物理B, 2024, 33(2): 24206-024206.

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Broadband bidirectional Brillouin-Raman random fiber laser with ultra-narrow linewidth

Broadband bidirectional Brillouin-Raman random fiber laser with ultra-narrow linewidth

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