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Indexed by:期刊论文

Date of Publication:2014-06-01

Journal:OPTICAL ENGINEERING

Included Journals:SCIE、EI

Volume:53

Issue:6

ISSN No.:0091-3286

Key Words:microwave photonic filter; stimulated Brillouin scattering; 3-dB bandwidth; out-of-band rejection

Abstract:The filtering properties of a continuously tunable single-passband microwave photonic filter based on stimulated Brillouin scattering (SBS) are investigated. The filter utilizes the advantage of combining phase-modulated RF signal and dual-sideband suppressed-carrier pump signal to achieve the SBS-based tunable narrowband filtering. The effects of pump power on the out-of-band rejection (OBR) and 3-dB bandwidth, the optical fiber structure on the resonant sideband, and input RF signal power on the OBR and 3-dB bandwidth are analyzed theoretically and experimentally. The results show that the pump power has the potential of increasing the OBR and tuning 3-dB bandwidth, whereas the RF signal power has nearly no influence on the two parameters. (c) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE).