Title :
A Wideband Tunable Optoelectronic Oscillator Based on a Spectral-Subtraction-Induced MPF
Author :
Yi Wang ; Xiaofeng Jin ; Yanhong Zhu ; Xianmin Zhang ; Shilie Zheng ; Hao Chi
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
We propose and demonstrate a frequency tunable optoelectronic oscillator (OEO) based on a spectral-subtraction-induced microwave photonic filter (MPF), which is implemented by a subtraction operation of transmission responses between two high-pass filters of different cutoff frequency. By changing the bandwidth of a tunable optical filter or the wavelengths of two laser sources, the central frequency of the synthesized single-pass MPF is shifted and the oscillation frequency of OEO can be tuned. In the experiment, frequency-tunable oscillation signals from 7.8 to 14.2 GHz at a step of ~ 1.25 GHz are generated and its performance is investigated.
Keywords :
high-pass filters; laser tuning; microwave filters; microwave oscillators; microwave photonics; optical filters; OEO; central frequency; cutoff frequency; frequency 7.8 GHz to 14.2 GHz; frequency tunable optoelectronic oscillator; frequency-tunable oscillation signals; high-pass filter; laser source wavelengths; oscillation frequency; single-pass MPF; spectral-subtraction-induced microwave photonic filter; subtraction operation; transmission responses; tunable optical filter bandwidth; Bandwidth; Microwave filters; Optical fibers; Optical filters; Oscillators; Radio frequency; Optoelectronic oscillator; microwave generation; microwave photonic filter; phase noise;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2403838
