Author(s): Wang, T (Wang, Ting); Xiao, JL (Xiao, Jin-Long); Wu, JL (Wu, Ji-Liang); Yang, YD (Yang, Yue-De); Huang, YZ (Huang, Yong-Zhen)

Source: IEEE PHOTONICS TECHNOLOGY LETTERS Volume: 33 Issue: 4 Pages: 185-188 DOI: 10.1109/LPT.2021.3050818 Published: FEB 15 2021

Abstract: An approach to achieving a highly selective and stable dual-passband microwave photonic filter (MPF) is presented. The dual-passband MPF is realized based on the phase-to-intensity modulation conversion by stimulated Brillouin scattering (SBS). The core of the proposed scheme is a two-tone pump generation by a directly modulated microcavity laser instead of two individual lasers or electro-optic modulators (EOMs), which makes the system relatively simple and stable. The center frequency of the MPF can be tuned from 0 to 20 GHz by adjusting the modulation frequency of the microcavity laser, where the center frequencies of the two passbands are related. The 3-dB bandwidth and the out-of-band rejection ratio of each passband are about 38 MHz and lager than 28.5 dB, respectively. The frequency stability of the MPF is also verified experimentally.

Accession Number: WOS:000610999300004

ISSN: 1041-1135

eISSN: 1941-0174

Full Text: https://ieeexplore.ieee.org/document/9319688