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High-Performance 1.55- \mu m Superluminescent Diode With Butt-Coupled Spot-Size Converter

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5 Author(s)
Su Hwan Oh ; RF & Opt. Devices Res. Dept., Electron. & Telecommun. Res. Inst., Daejeon ; Dong-Hoon Lee ; Ki Soo Kim ; Yong-Soon Baek
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We report the design and fabrication of a novel 1.55-m spot-size converter superluminescent diode (SLD) for optical access networks. The active section of SLD was fabricated by using a planar buried heterostructure to adopt the double-waveguide-core structure for low-threshold and high-output power operation at a low injection current. A ridge-based passive waveguide was employed for an efficient coupling to a planar lightwave circuit. The threshold current was as low as 14 mA, and the maximum output power was as high as 28 mW with ripple less than 3 dB at an injection current of 200 mA.

Published in:

Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 11 )