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

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4 Author(s)
Sang-Wan Ryu ; Electron. & Telecommun. Res. Inst., Taejon, South Korea ; Kim, Sung-Bock ; Jae-Sik Sim ; Jeha Kim

A 1.55-/spl mu/m 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/spl deg/ and 7.8/spl deg/, respectively.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 1 )

Date of Publication:

Jan. 2003

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