Ultra-wideband microwave photonic phase shifter with configurable amplitude response

M. Pagani*, D. Marpaung, B.J. Eggleton

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

34 Citations (Scopus)


We introduce a new principle that enables separate control of the amplitude and phase of an optical carrier, simply by controlling the power of two stimulated Brillouin scattering (SBS) pumps. This technique is used to implement a microwave photonic phase shifter with record performance, which solves the bandwidth limitation of previous gain-transparent SBS-based phase shifters, while achieving unprecedented minimum power fluctuations, as a function of phase shift. We demonstrate 360° continuously tunable phase shift, with less than 0.25 dB output power fluctuations, over a frequency band from 1.5 to 31 GHz, limited only by the measurement equipment.
Original languageEnglish
Pages (from-to)5854-5857
JournalOptics letters
Issue number20
Publication statusPublished - 2014
Externally publishedYes


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