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20-mW widely tunable laser module using DFB array and MEMS selection

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16 Author(s)
Pezeshki, B. ; Santur Corp., Fremont, CA, USA ; Vail, E. ; Kubicky, J. ; Yoffe, G.
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The authors describe a novel configuration for a wavelength selectable laser that provides wide tuning and distributed-feedback (DFB) performance and reliability at a fundamentally low cost structure. The configuration consists of a DFB laser array and a micromechanical mirror that selects one element of the array. The MEMS tilt mirror also loosens the tolerances, since the fine optical alignment is done electronically. Only one laser is operated at a time, with coarse tuning realized by selecting the correct laser and fine tuning by adjusting the chip temperature. The 33-nm total tuning at 20-mW fiber coupled power is obtained in a fully functional module.

Published in:

Photonics Technology Letters, IEEE  (Volume:14 ,  Issue: 10 )