Open AccessDual-frequency optoelectronic oscillator incorporating a single cavity and multiband microwave photonic filter
Author(s) -
Ling Liu,
Xian Jin,
Tigang Ning,
Lawrence R. Chen,
J. Capmany
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.423148
Subject(s) - passband , microwave , optical filter , radio frequency , slicing , photonics , filter (signal processing) , optics , optoelectronics , materials science , optical carrier transmission rates , electronic engineering , band pass filter , computer science , physics , telecommunications , optical fiber , radio over fiber , engineering , world wide web , computer vision
Dual-frequency optoelectronic oscillators (OEOs) have potential applications in dual-band wireless networking and dual-parameter sensing systems. We propose a dual-frequency OEO incorporating a multiband microwave photonic filter (MPF). In particular, the two microwave signals are generated simultaneously in a single OEO cavity. By simply varying the parameters of optical spectral slicing and sampling (e.g., with a programmable optical filter) used to implement the MPF, we can readily achieve simultaneous tuning of the dual-frequency output, as well as alternate switching between single-frequency and dual-frequency output. The multi-passband nature of the MPF, enabled via optical spectral slicing, opens a path to multi-frequency OEO operation by scaling our scheme in the future. Such a structure provides a flexible way to generate simultaneously tunable and reconfigurable multi-frequency microwave signals.