Miniature mid-infrared thermooptic switch with photonic crystal waveguide based silicon-on-sapphire Mach–Zehnder interferometers

Yi Zou; Swapnajit Chakravarty; Chi-Jui Chung; Ray T. Chen

doi:10.1117/12.2214440

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4 April 2016 Miniature mid-infrared thermooptic switch with photonic crystal waveguide based silicon-on-sapphire Mach–Zehnder interferometers

Yi Zou, Swapnajit Chakravarty, Chi-Jui Chung, Ray T. Chen

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Proceedings Volume 9753, Optical Interconnects XVI; 97530Q (2016) https://doi.org/10.1117/12.2214440
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

Ultracompact thermooptically tuned photonic crystal waveguide (PCW) based Mach–Zehnder interferometers (MZIs) working in silicon-on-sapphire in mid-infrared regime have been proposed and demonstrated. We designed and fabricated a PCW based silicon thermo-optic (TO) switch operating at 3.43 μm. Both steady-state and transient thermal analyses were performed to evaluate the thermal performance of the TO MZIs. The required π phase shift between the two arms of the MZI has been successfully achieved within an 80 μm interaction distance. The maximum modulation depth of 74% was demonstrated for switching power of 170 mW.

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Yi Zou, Swapnajit Chakravarty, Chi-Jui Chung, and Ray T. Chen "Miniature mid-infrared thermooptic switch with photonic crystal waveguide based silicon-on-sapphire Mach–Zehnder interferometers", Proc. SPIE 9753, Optical Interconnects XVI, 97530Q (4 April 2016); https://doi.org/10.1117/12.2214440

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