Daoxin Dai et al 2009 New J. Phys. 11 125016 doi:10.1088/1367-2630/11/12/125016
Daoxin Dai1, Alexander Fang and John E Bowers1
Show affiliationsPart of Focus on Advanced Semiconductor Heterostructures for Optoelectronics
We propose high-speed modulation of hybrid silicon lasers through modulation of the photon lifetime τp. Two structures are presented to achieve τp-modulation by modifying the distributed loss or the feedback coefficient of the laser cavity. By using small-signal modeling and the finite-difference method, the responses in the frequency and time domains are given. It is shown that it is possible to achieve a 3 dB bandwidth of over 100 GHz and a high data transmission rate of more than 50 GHz. The theoretical analysis also shows that the chirp due to the variations of the carrier densities in the gain/modulation sections is very small.
42.55.Px Semiconductor lasers; laser diodes
42.55.Sa Microcavity and microdisk lasers
42.60.Fc Modulation, tuning, and mode locking
42.60.Da Resonators, cavities, amplifiers, arrays, and rings
Issue 12 (December 2009)
Received 10 June 2009
Published 17 December 2009
Daoxin Dai et al 2009 New J. Phys. 11 125016
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