K-band optoelectronic oscillator based on a double-Brillouin-frequency shifter

An optoelectronic oscillator (OEO) based on a double-Brillouin-frequency shifter (DBFS) is proposed and experimentally demonstrated. Two orders of stimulated Brillouin scattering are realized in the DBFS, and the narrow gain bandwidth of the second-order Stokes wave is utilized to implement the phas...

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Bibliographic Details
Published in:Optical engineering 2019-10, Vol.58 (10), p.100501-100501
Main Authors: Liu, Peng, Liu, Shifeng, Yang, Huashan, Kang, Xiaochen, Pan, Shilong
Format: Article
Language:English
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Summary:An optoelectronic oscillator (OEO) based on a double-Brillouin-frequency shifter (DBFS) is proposed and experimentally demonstrated. Two orders of stimulated Brillouin scattering are realized in the DBFS, and the narrow gain bandwidth of the second-order Stokes wave is utilized to implement the phase modulation to intensity modulation conversion. Only one laser is used to provide both signal and pump waves. A k-band microwave signal with a harmonic suppression ratio of 61 dB and a side-mode suppression ratio of 45 dB is experimentally generated, and 400-MHz tunability is realized by adjusting the laser wavelength. Because of the simple structure and high-frequency oscillation, the DBFS-based OEO can find applications for wireless communications and civil radar systems.
ISSN:0091-3286
1560-2303
DOI:10.1117/1.OE.58.10.100501