Sideband locking of a single-section semiconductor distributed-feedback laser in an optical phase-lock loop.
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.
Satyan
Naresh
N
Department of Electrical Engineering, California Institute of Technology, 1200 E. California Boulevard 136-93, Pasadena, California 91125, USA. naresh@caltech.edu
Vasilyev
Arseny
A
Liang
Wei
W
Rakuljic
George
G
Yariv
Amnon
A