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Compact Optical Generation of Microwave Signals Using a Monolithic Quantum Dot Passively Mode-Locked Laser

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5 Author(s)
Lin, C.-Y. ; Center for High Technol. Mater., Univ. of New Mexico, Albuquerque, NM, USA ; Xin, Y.-C. ; Kim, J.H. ; Christodoulou, C.G.
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Microwave signal generation from the saturable absorber of a monolithic quantum dot passively mode-locked laser is presented. We observe a differential efficiency of 33% that measures the optical-to-RF power conversion. An optimum extraction efficiency of the saturable absorber of about 86% is also found. To assess the stability of the device, the mode-locking operation regime of the quantum dot device is analyzed and compared to the quantum well system. Our findings confirm that quantum dot mode-locked lasers are suitable candidates for the optical generation of RF signals in a compact and efficient semiconductor device.

Published in:

Photonics Journal, IEEE  (Volume:1 ,  Issue: 4 )