Microwave frequency measurement based on optical phase modulation and stimulated Brillouin scattering. Issue 14 (1st July 2017)

• Record Type: Journal Article
• Authors: Xin, Fengdan; Yan, Juanjuan; Liu, Qidi
• Is Part Of: Electronics letters. Volume 53:Issue 14(2017)
• Page Start: 937
• Page End: 939
• Publication Date: 2017-07-01
• Subjects: frequency measurement -- microwave measurement -- phase modulation -- optical modulation -- stimulated Brillouin scattering -- measurement errors -- microwave detectors -- photodetectors -- fibre optic sensors -- phase measurement -- optical variables measurement -- optical signal detection; microwave frequency measurement -- optical phase modulation -- stimulated Brillouin scattering -- photonic technique -- SBS -- measurement error -- phase‐modulated signal -- microwave signal detection -- photoelectric detection -- frequency 50 MHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2017.0125
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A photonic technique for microwave frequency measurement based on stimulated Brillouin scattering (SBS) with low measurement error and large measurement range is demonstrated. In the scheme, an optical phase modulator is employed and the intensity balance between the two sidebands of the phase‐modulated signal is broken by use of SBS in a fibre. The frequency measurement is achieved by detecting the existence of a microwave signal after photoelectric detection of the phase modulated signal. The measurement error is experimentally shown to be 50 MHz in a narrow measuring range of ∼1 GHz and 100 MHz in a wide range of 20 GHz.