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Broadband photonic microwave phase shifter based on controlling two RF modulation sidebands via a Fourier-domain optical processor

Yang, Jianxun, Chan, Erwin H. W., Wang, Xudong, Feng, Xinhuan and Guan, Bai-Ou (2015). Broadband photonic microwave phase shifter based on controlling two RF modulation sidebands via a Fourier-domain optical processor. Optics Express,23(9):12100-12110.

Document type: Journal Article
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IRMA ID 75039815xPUB994
Title Broadband photonic microwave phase shifter based on controlling two RF modulation sidebands via a Fourier-domain optical processor
Author Yang, Jianxun
Chan, Erwin H. W.
Wang, Xudong
Feng, Xinhuan
Guan, Bai-Ou
Journal Name Optics Express
Publication Date 2015
Volume Number 23
Issue Number 9
ISSN 1094-4087   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-84943162322
Start Page 12100
End Page 12110
Total Pages 11
Place of Publication United States
Publisher Optical Society of America
Field of Research ENGINEERING
HERDC Category C1 - Journal Article (DIISR)
Abstract An all-optical photonic microwave phase shifter that can realize a continuous 360° phase shift over a wide frequency range is presented. It is based on the new concept of controlling the amplitude and phase of the two RF modulation sidebands via a Fourier-domain optical processor. The operating frequency range of the phase shifter is largely increased compared to the previously reported Fourier-domain optical processor based phase shifter that uses only one RF modulation sideband. This is due to the extension of the lower RF operating frequency by designing the amplitude and phase of one of the RF modulation sidebands while the other sideband is designed to realize the required RF signal phase shift. The two-sideband amplitude-and-phase-control based photonic microwave phase shifter has a simple structure as it only requires a single laser source, a phase modulator, a Fourier-domain optical processor and a single photodetector. Investigation on the bandwidth limitation problem in the conventional Fourier-domain optical processor based phase shifter is presented. Comparisons between the measured phase shifter output RF amplitude and phase responses with theory, which show excellent agreement, are also presented for the first time. Experimental results demonstrate the full −180° to + 180° phase shift with little RF signal amplitude variation of less than 3 dB and with a phase deviation of less than 4° over a 7.5 GHz to 26.5 GHz frequency range, and the phase shifter exhibits a long term stable performance.
DOI http://dx.doi.org/10.1364/OE.23.012100   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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