Title :
Measurement of reflectivity of butt-joint active-passive interfaces in integrated extended cavity lasers
Author :
Barbarin, Y. ; Bente, E.A.J.M. ; Marquet, C. ; Leclère, E. J S ; Binsma, J.J.M. ; Smit, M.K.
Author_Institution :
COBRA, Eindhoven Univ. of Technol., Netherlands
Abstract :
A method and measurement results are presented for the determination of the reflectivity of butt-joint active-passive interfaces in a series of extended cavity Fabry-Pe´rot lasers. The method is based on the analysis of subthreshold laser spectra. The small reflections at the two intracavity active-passive interfaces modify the mode structure of the laser. By fitting the calculated subthreshold mode structure to the recorded data, values of the reflectivities are extracted. An average value of 9.10-5 has been determined. The value of the reflectivity of those interfaces is relevant for photonic integrated circuits and particularly integrated mode-locked lasers.
Keywords :
integrated optics; interface structure; laser cavity resonators; laser mode locking; laser modes; light reflection; reflectivity; semiconductor optical amplifiers; waveguide lasers; Fabry-Perot lasers; active-passive interfaces; butt-joint interfaces; extended cavity lasers; integrated lasers; interface reflections; intracavity interfaces; laser mode structure; mode-locked lasers; photonic integrated circuits; reflectivity; semiconductor optical amplifier; semiconductor waveguide; subthreshold laser spectra; Data mining; Laser mode locking; Laser modes; Optical reflection; Optical waveguides; Reflectivity; Semiconductor lasers; Semiconductor optical amplifiers; Semiconductor waveguides; Waveguide lasers; Active–passive integration; integrated optics; laser; semiconductor waveguide;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.857597
