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Widely tunable single bandpass microwave photonic filter based on dual‐fiber stimulated Brillouin scattering
Author(s) -
Yan Juanjuan,
Li Liwei,
Yi Xiaoke,
Chew Suen X.
Publication year - 2019
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31655
Subject(s) - band pass filter , brillouin scattering , materials science , microwave , bandwidth (computing) , sideband , optoelectronics , optics , brillouin zone , optical fiber , physics , telecommunications , engineering
A new technique to achieve a single bandpass microwave photonic filter (MPF) with wide tunability based on stimulated Brillouin scattering is proposed. The MPF cascades the Brillouin frequency shifter and amplification based on a dual‐fiber structure. The experimental results present a single bandpass MPF located at 21.4 GHz with a 3‐dB bandwidth of 38 MHz and an out‐of‐band rejection ratio over 30 dB. The proposed single bandpass MPF also successfully demonstrates a wide‐band tuning over 40 GHz, which is achieved by employing a frequency shifter based on carrier suppressed single‐sideband modulation scheme in the structure.