The bandwidth and performance of optical phase-lock loops (OPLLs) using single-section semiconductor lasers (SCLs) are severely limited by the nonuniform frequency modulation response of the lasers. It is demonstrated that this restriction is eliminated by the sideband locking of a single-section distributed-feedback SCL to a master laser in a heterodyne OPLL, thus enabling a delay-limited loop bandwidth. The lineshape of the phase-locked SCL output is characterized using a delayed self-heterodyne measurement.
© 2009 Optical Society of America
Lasers and Laser Optics
Original Manuscript: July 8, 2009
Revised Manuscript: September 18, 2009
Manuscript Accepted: September 19, 2009
Published: October 19, 2009
Naresh Satyan, Arseny Vasilyev, Wei Liang, George Rakuljic, and Amnon Yariv, "Sideband locking of a single-section semiconductor distributed-feedback laser in an optical phase-lock loop," Opt. Lett. 34, 3256-3258 (2009)