Open AccessHigh‐resolution optical vector network analyser employing optical double‐sideband modulation and optical Hilbert transform
Author(s) -
Xue Min,
Chen Wei,
Zhu Beibei,
Pan Shilong
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.5243
Subject(s) - optics , hilbert transform , brillouin scattering , modulation (music) , sideband , hilbert spectral analysis , analyser , optical modulation amplitude , physics , materials science , optical fiber , optical amplifier , computer science , laser , telecommunications , spectral density , acoustics , radio frequency
The authors propose and experimentally demonstrate an optical vector network analyser (OVNA) employing optical double‐sideband modulation and optical Hilbert transform. The optical device‐under‐test is characterised with and without optical Hilbert transform. Then, by employing post signal processing, accurate spectral responses on upper and lower sides of the optical carrier are observed. A proof‐of‐concept experiment for measuring gain and absorption responses of the stimulated Brillouin scattering (SBS) is performed, showing that the proposed OVNA is able to accurately measure the gain and absorption responses of the SBS. The measurement error is smaller than 1%.