Abstract

High-order random fiber laser amplification (RFLA) is an effective way for realization of ultralong optical transmission and sensing. However, potential issues such as modulation instability (MI) and relative intensity noise transfer would largely decrease the system performance unless the amplifying schemes and pump power are cautiously designed. In this paper, through simulations and optimizations, a 175 km repeaterless Brillouin optical time-domain analysis (BOTDA) with uncertainty of ±2.06 MHz and spatial resolution of 8 m is demonstrated based on the hybrid of forward 2nd-order RFLA and backward 3rd-order RFLA. The figure of merit (FoM) of the system is >200,000. As far as we know, this is the longest distance and highest FoM for repeaterless BOTDA reported so far.

Hybrid distributed Raman amplification combining random fiber laser based 2nd-order and low-noise LD based 1st-order pumping

Xin-Hong Jia, Yun-Jiang Rao, Cheng-Xu Yuan, Jin Li, Xiao-Dong Yan, Zi-Nan Wang, Wei-Li Zhang, Han Wu, Ye-Yu Zhu, and Fei Peng
Opt. Express 21(21) 24611-24619 (2013)

Optimization of long-range BOTDA sensors with high resolution using first-order bi-directional Raman amplification

Marcelo A. Soto, Gabriele Bolognini, and Fabrizio Di Pasquale
Opt. Express 19(5) 4444-4457 (2011)

Distributed Raman amplification using ultra-long fiber laser with a ring cavity: characteristics and sensing application

Xin-Hong Jia, Yun-Jiang Rao, Zi-Nan Wang, Wei-Li Zhang, Cheng-Xu Yuan, Xiao-Dong Yan, Jin Li, Han Wu, Ye-Yu Zhu, and Fei Peng
Opt. Express 21(18) 21208-21217 (2013)

Ultra-long chaotic FBG sensing with high-order random fiber lasing amplification

Bing Han and Han Wu
Opt. Lett. 48(5) 1280-1283 (2023)

BOTDA sensors enhanced using high-efficiency second-order distributed Brillouin amplification

Xin-Hong Jia, Han-Qing Chang, Lei Ao, Xiao-Ling Ji, Cong Xu, and Wei-Li Zhang
Opt. Express 24(13) 14079-14085 (2016)