title: Coherent combining of the output of two semiconductor lasers using optical phase-lock loops.
abstract: We have experimentally demonstrated current-injection optical phase-lock loops (OPLLs) based on commercial single-section semiconductor distributed-feedback (DFB) lasers. Using two parallel OPLLs, we have obtained 87% efficient coherent power combining of the two DFB lasers. The rms differential phase error between the two lasers is about 30 degrees .
authors.affiliation: Department of Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA. liangwei@its.caltech.edu
authors.forename: Wei
authors.initials: W
authors.lastname: Liang
authors.forename: Amnon
authors.initials: A
authors.lastname: Yariv
authors.forename: Anthony
authors.initials: A
authors.lastname: Kewitsch
authors.forename: George
authors.initials: G
authors.lastname: Rakuljic