title: Characterization of an actively linearized ultrabroadband chirped laser with a fiber-laser optical frequency comb.
abstract: The optical frequency sweep of an actively linearized, ultrabroadband, chirped laser source is characterized through optical heterodyne detection against a fiber-laser frequency comb. Frequency sweeps were measured over approximately 5 THz bandwidths from 1530 nm to 1570 nm. The dominant deviation from linearity resulted from the nonzero dispersion of the fiber delay used as a reference for the sweep linearization. Removing the low-order dispersion effects, the residual sweep nonlinearity was less than 60 kHz rms, corresponding to a constant chirp with less than 15 ppb deviation across the 5 THz sweep.
authors.affiliation: Montana State University-Spectrum Lab, P.0. Box 173510, Bozeman, Montana 59717, USA. barber@spectrum.montana.edu
authors.forename: Zeb W
authors.initials: ZW
authors.lastname: Barber
authors.forename: Fabrizio R
authors.initials: FR
authors.lastname: Giorgetta
authors.forename: Peter A
authors.initials: PA
authors.lastname: Roos
authors.forename: Ian
authors.initials: I
authors.lastname: Coddington
authors.forename: Jason R
authors.initials: JR
authors.lastname: Dahl
authors.forename: Randy R
authors.initials: RR
authors.lastname: Reibel
authors.forename: Nathan
authors.initials: N
authors.lastname: Greenfield
authors.forename: Nathan R
authors.initials: NR
authors.lastname: Newbury