We report on a passively modelocked InP/InGaAsP quantum well semiconductor ring laser which operates at 20GHz repetition rate and at 1.58µm output wavelength. A number of devices with varying relative positions of the absorbers and amplifiers have been realized using active-passive integration technology in the JEPPIX fabrication platform. The 4mm-long laser ring cavity incorporates a 750µm-long optical amplifier section, a separate 40µm-long saturable absorber section, passive waveguide sections and a passive MMI-type 50% output coupler. We investigate operation regimes of the laser and explore conditions for single mode lasing and mode-locked operation.
|Title of host publication||Proceedings of the 15th Annual Symposium of the IEEE Photonics Benelux Chapter, 18-19 November 2010, Delft, The Netherlands|
|Editors||J. Pozo, M. Mortensen, P. Urbach, X. Leijtens, M. Yousefi|
|Place of Publication||Delft|
|Publication status||Published - 2010|