TY - GEN
T1 - Fast Brillouin optical time domain analysis utilizing double-sideband digital optical frequency comb
AU - He, Huan
AU - Li, Yingxuan
AU - Zou, Xuan
AU - Zhao, Zhiyong
AU - Huang, Dongmei
AU - Tang, Ming
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2024/1/1
Y1 - 2024/1/1
N2 - We propose and demonstrate a fast Brillouin optical time domain analysis (BOTDA) based on simultaneous measurement of Brillouin gain spectrum (BGS) and Brillouin loss spectrum (BLS) with double-sideband digital optical frequency comb (DOFC). By using the two sidebands of DOFC probe to interrogates the BGS and BLS, respectively, simultaneous acquisitions of BGS and BLS with a fixed frequency difference are achieved by direct detection without sideband selective optical filters. The measurement accuracy of the system is significantly improved compared to traditional single-sideband based schemes without increasing the system complexity. Eventually, the proposed BOTDA sensor achieves less than 1-MHz frequency uncertainty over 10-km fiber with a 20-m spatial resolution, and 5.5-ms measurement time. The experimental results validate that the proposed high-performance scheme is very promising for distributed dynamic sensing application.
AB - We propose and demonstrate a fast Brillouin optical time domain analysis (BOTDA) based on simultaneous measurement of Brillouin gain spectrum (BGS) and Brillouin loss spectrum (BLS) with double-sideband digital optical frequency comb (DOFC). By using the two sidebands of DOFC probe to interrogates the BGS and BLS, respectively, simultaneous acquisitions of BGS and BLS with a fixed frequency difference are achieved by direct detection without sideband selective optical filters. The measurement accuracy of the system is significantly improved compared to traditional single-sideband based schemes without increasing the system complexity. Eventually, the proposed BOTDA sensor achieves less than 1-MHz frequency uncertainty over 10-km fiber with a 20-m spatial resolution, and 5.5-ms measurement time. The experimental results validate that the proposed high-performance scheme is very promising for distributed dynamic sensing application.
KW - Brillouin scattering
KW - digital optical frequency comb
KW - distributed sensing
KW - double-sideband modulation
UR - http://www.scopus.com/inward/record.url?scp=85183304596&partnerID=8YFLogxK
U2 - 10.1109/ACP/POEM59049.2023.10369280
DO - 10.1109/ACP/POEM59049.2023.10369280
M3 - Conference article published in proceeding or book
AN - SCOPUS:85183304596
T3 - 2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023
BT - 2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023
Y2 - 4 November 2023 through 7 November 2023
ER -