We report an experimental characterization of additive noise from a single-stage phase shifter based on slow and fast light propagation in a bulk semiconductor optical amplifier. We examine the influence of redshifted sideband suppression and optical input power on the signal-to-noise ratio (SNR) of the detected signal. We conclude that in spite of the up to a 6 dB reduction in the detected noise, the SNR remains dominated by the decrease in the detected signal power.
© 2009 Optical Society of America
Original Manuscript: March 25, 2009
Revised Manuscript: May 6, 2009
Manuscript Accepted: May 20, 2009
Published: June 22, 2009
Evgeny Shumakher, Seán Ó Dúill, and Gadi Eisenstein, "Signal-to-noise ratio of a semiconductor optical-amplifier-based optical phase shifter," Opt. Lett. 34, 1940-1942 (2009)