Up to 50 dB Extinction in Broadband Single-Stage Thermo- Optic Mach-Zehnder Interferometers for Programmable Low-Loss Silicon Nitride Photonic Circuits

Ashutosh Rao; Ashutosh Rao; Gregory Moille; Gregory Moille; Xiyuan Lu; Xiyuan Lu; Daron Westly; Michael Geiselmann; Michael Zervas; Kartik Srinivasan; Kartik Srinivasan

doi:10.1364/CLEO_SI.2021.SM1A.7

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2021),
paper SM1A.7
•https://doi.org/10.1364/CLEO_SI.2021.SM1A.7

Up to 50 dB Extinction in Broadband Single-Stage Thermo- Optic Mach-Zehnder Interferometers for Programmable Low-Loss Silicon Nitride Photonic Circuits

Ashutosh Rao, Gregory Moille, Xiyuan Lu, Daron Westly, Michael Geiselmann, Michael Zervas, and Kartik Srinivasan

CLEO: Science and Innovations 2021

San Jose, California United States
9–14 May 2021
ISBN: 978-1-943580-91-0

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Active and Passive Photonic Integration (SM1A)

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A. Rao, G. Moille, X. Lu, D. Westly, M. Geiselmann, M. Zervas, and K. Srinivasan, "Up to 50 dB Extinction in Broadband Single-Stage Thermo- Optic Mach-Zehnder Interferometers for Programmable Low-Loss Silicon Nitride Photonic Circuits," in Conference on Lasers and Electro-Optics, J. Kang, S. Tomasulo, I. Ilev, D. Müller, N. Litchinitser, S. Polyakov, V. Podolskiy, J. Nunn, C. Dorrer, T. Fortier, Q. Gan, and C. Saraceno, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper SM1A.7.

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Abstract

We demonstrate single-stage thermo-optic Si₃N₄ interferometers with (46.1±2.5) dB average extinction ratio over 1460-1640 nm (≈50× of typical devices). We analyze performance requirements for creating reconfigurable high-quality-factor resonators in programmable circuits using such interferometers.

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