28 December 2016 Tunable optoelectronic oscillator based on a dual-parallel Mach–Zehnder modulator and a phase-shifted FBG
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Abstract
This paper proposes and demonstrates an optoelectronic oscillator (OEO) for the generation of a microwave signal with a wide frequency tuning range. In the proposed OEO, a microwave photonic filter (MPF) is formed by a joint operation of a dual-parallel Mach–Zehnder (DP-MZM) and a phase-shifted fiber Bragg grating (PS-FBG). The DP-MZM is employed to generate a modulated signal which includes an optical carrier and odd-order sidebands. The PS-FBG is used as an optical notch filter to remove the + 1 st sideband. Since the central frequency of the MPF can be shifted by changing the optical wavelength, the frequency tunability of the OEO is then realized by incorporating such an all-optical MPF into an optical domain dual-loop OEO without any electronic microwave filters. As a result, a microwave signal with a frequency-tuning range from 2.483 to 12.571 GHz is generated with its performance being evaluated.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Wei Wang, Cheng-Xin Li, Rui Dai, Lian-Qun Xie, Ke Wu, Ming-Chun Yin, Xu Chen, Bo Zhao, "Tunable optoelectronic oscillator based on a dual-parallel Mach–Zehnder modulator and a phase-shifted FBG," Optical Engineering 55(12), 126113 (28 December 2016). https://doi.org/10.1117/1.OE.55.12.126113 . Submission: Received: 18 September 2016; Accepted: 6 December 2016
Received: 18 September 2016; Accepted: 6 December 2016; Published: 28 December 2016
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