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Monolithically integrated multiwavelength grating cavity laser

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5 Author(s)
Oh Kee Kwon ; Opt. Devices Dept., Electron. & Telecommun. Res. Inst., Daejeon, South Korea ; Kang Ho Kim ; Eun Deok Sim ; Jong Hoi Kim
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A multiwavelength grating cavity laser is reported using a novel design for a multichannel light source based on an etched diffraction grating. Following the design, the compact eight-channel device capable of fine-tuning has been realized by monolithically integrating semiconductor optical amplifiers, various passive waveguides, and deeply etched grating, providing high butt-coupling efficiency, and low waveguide losses. As a result, the sidemode suppression ratio in excess of 45 dB over all channels was achieved.

Published in:

IEEE Photonics Technology Letters  (Volume:17 ,  Issue: 9 )