Title :
Characterization of wavelength chirping in modelocked monolithic CPM lasers
Author :
Brorson, S.D. ; Wang, Z. ; Franck, T. ; Bischoff, S. ; Moller-Larsen, A. ; Nielsen, J.M. ; Mork, J. ; Sorensen, M.P.
Author_Institution :
Tele Denmark Res., Horsholm, Denmark
Abstract :
A new method to measure the chirp of pulses emitted from repetitively driven lasers is described. The technique relies on spectrally filtering the output of the laser, detecting it, and then measuring its phase with respect to a reference signal via a mixing technique. We demonstrate the method by measuring the chirp of pulses emitted from monolithic CPM lasers. The measured chirp agrees with that predicted by a newly developed model of the CPM lasers.<>
Keywords :
III-V semiconductors; chirp modulation; continuous phase modulation; gallium arsenide; indium compounds; laser mode locking; laser variables measurement; optical correlation; quantum well lasers; 1.557 mum; CPM laser model; GRIN-SCH; GaInAs; GaInAs quantum well; Wigner transform; interferometric autocorrelation; large signal model; laser wavelength; mixing technique; modelocked monolithic CPM lasers; phase measurement; pulse chirp; reference signal; repetitively driven lasers; spectral filtering; wavelength chirping characterization; Chirp; Filtering; Laser modes; Masers; Microwave filters; Microwave oscillators; Optical filters; Optical pulses; Pulse measurements; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
