Investigation of Rayleigh-Assisted Coherent Optical Spectrum Analyzer

Dang，Hong1; Chen，Linqi2; Liu，Huanhuan1; Chen，Jinna1; Liao，Luoyuan1; Du，Changzheng1; Lin，Tianxin3; Cui，Jiwen2; Shum，Perry Ping1

10.1109/OGC52961.2021.9654372

2021

978-1-6654-3195-8

2021 Optoelectronics Global Conference, OGC 2021

149-152

15-18 Sept. 2021

Shenzhen, China

Optical spectrum analyzers (OSAs) with high spectral resolution are of significant interest in the fields of sensing, spectroscopy, and communication. However, as recent researches have been no longer satisfied with the spectral resolution of the current available OSAs, new methods are needed urgently. In this paper, we experimentally demonstrate an OSA combining the Rayleigh backward scattering (RBS) and the heterodyne interferometry. As the interferometry configuration downshifts the backward scatterings from the optical frequency band to an electronically tractable frequency range, the responses raised by the concomitant stimulated Brillouin scattering (SBS) could be filtered out by an electrical low-pass filter. Benefiting from this combination, the proposed Rayleigh-assisted coherent optical spectrum analyzer (RCOSA) could achieve a spectral resolution of10 kHz(0.08fm).

coherent optical spectrum analyzer heterodyne interferometry Rayleigh backward scattering

第一

英语

EI

20220711639018

Interferometry ; Low pass filters ; Spectral resolution ; Spectrum analyzers ; Stimulated Brillouin scattering

Electric Filters:703.2 ; Light/Optics:741.1 ; Optical Variables Measurements:941.4

2-s2.0-85124540359

Scopus

1.Southern University of Science and Technology,Shenzhen,China
2.Harbin Institute of Technology,Harbin,China
3.Sun Yat-sen University,Guangzhou,China

Dang，Hong,Chen，Linqi,Liu，Huanhuan,et al. Investigation of Rayleigh-Assisted Coherent Optical Spectrum Analyzer[C],2021:149-152.