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Sub-μs switching time in silicon-on-insulator Mach-Zehnder thermooptic switch

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4 Author(s)
Harjanne, M. ; Helsinki Univ. of Technol., Espoo, Finland ; Kapulainen, M. ; Aalto, T. ; Heimala, P.

We have demonstrated both rise and fall times below 1 μs with 10%-90% modulation in a silicon-on-insulator thermooptical Mach-Zehnder switch. The switch is based on 9-μm-thick and 10-μm-wide single-mode rib waveguides. Very fast switching was achieved by using a differential control method. The switch was driven with a digital signal processor accompanied by simple electronic circuitry.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 9 )