1.55-mum spot-size converter integrated laser diode with conventional buried-heterostructure laser process

A 1.55-mum spot-size converter integrated laser diode is demonstrated with conventional buried-heterostructure laser process. For the spot-size converter, we employed a double-waveguide structure in which a ridge-based passive waveguide was incorporated. The passive waveguide was optically combined...

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Bibliographic Details
Published in:IEEE photonics technology letters 2003-01, Vol.15 (1), p.12-14
Main Authors: Ryu, Sang-Wan, Kim, Sung-Bock, Sim, Jae-Sik, Kim, Jeha
Format: Article
Language:English
Online Access:Get full text
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Summary:A 1.55-mum spot-size converter integrated laser diode is demonstrated with conventional buried-heterostructure laser process. For the spot-size converter, we employed a double-waveguide structure in which a ridge-based passive waveguide was incorporated. The passive waveguide was optically combined with a laterally tapered active waveguide to control mode size. The threshold current was measured to be 5 mA together with high slope efficiency of 0.45 W/A. The beam divergence angles in the horizontal and vertical directions were as small as 9.0 deg and 7.8 deg , respectively.
ISSN:1041-1135
DOI:10.1109/LPT.2002.805770