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An electrically controlled Bragg reflector integrated in a rib silicon on insulator waveguide

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5 Author(s)
Cutolo, A. ; Department of Electronic Engineering, University of Naples “Federico II”, Via Claudio, 21, 80125 Naples, Italy ; Iodice, M. ; Irace, A. ; Spirito, P.
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In this letter, we present a novel structure for light amplitude modulation based on a lateral p-i-n diode combined with a Bragg reflector which transforms the phase shift induced by the plasma dispersion effect in the intrinsic region of the diode into a voltage controlled variation of the reflectivity of the Bragg mirror. Numerical simulations show a modulation depth of 50% achieved in about 12 ns with a power dissipation of 4.0 mW and an insertion loss of 1.0 dB. The device is demonstrated to be very attractive in terms of power dissipation as compared to a Mach–Zehnder interferometer occupying the same area on chip. © 1997 American Institute of Physics.

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Applied Physics Letters  (Volume:71 ,  Issue: 2 )