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Physical Review E
We present an experimental and theoretical study of multistability of a single-mode laser subject to feedback through phase tuning and amplifier sections integrated on the same chip. Closely above threshold, a regime of tristability of continuous-wave ͑CW͒ states is found for multiple ranges of amplifier and phase currents. The separation between the tristable wavelengths agrees with the channel spacing of dense wavelength multiplexing in the C band of optical communication making the devicedoi:10.1103/physreve.79.036211 pmid:19392039 fatcat:5jmfw6oje5gkvgx2iamtrt4wmu