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Asymmetric output characteristics in 1.3-μm spot-size converted laser diodes

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4 Author(s)
Donghoon Jang ; Optoelectronics Div., Samsung Electron. Company, Ltd, Kyungki-Do, South Korea ; Jongin Shim ; Jungkee Lee ; Yungseon Eo

A spot-size converted laser diode (SSC-LD) with a vertically tapered passive waveguide structure was fabricated by butt-joint-built-in (BJB) coupling and selective area metal organic chemical vapor deposition growth. A high coupling efficiency exceeding 50% and 1-dB alignment tolerance of ±2.5 μm were obtained at a distance of 20 μm between a flat-end single-mode fiber and the SSC-LD. Experimental results show that the asymmetric output property can be described by the radiation mode added to the guide mode and spatial hole-burning in the active region

Published in:

IEEE Journal of Quantum Electronics  (Volume:37 ,  Issue: 12 )