Robust broadband athermal 2 × 2 Mach–Zehnder interferometer with sub-wavelength grating adiabatic couplers

Zakriya Mohammed; Mahmoud Rasras

doi:10.1364/OL.431300

Robust broadband athermal 2 × 2 Mach–Zehnder interferometer with sub-wavelength grating adiabatic couplers

Research output: Contribution to journal › Article › peer-review

Abstract

We report an all-silicon thermally insensitive (-1.5 pm/^◦C) 2 × 2 Mach–Zehnder interferometer (MZI) over a spectral range from 1540 to 1620 nm. Additionally, the proposed MZI exhibits no imbalance in its extinction ratio with temperature. The broadband spectral range with minimal temperature sensitivity is achieved by slightly overcompensating the MZI design for temperature variations. At the same time, the uniformity in the extinction ratio is controlled using sub-wavelength grating adiabatic couplers for splitting and combining.

Original language	English (US)
Pages (from-to)	3781-3784
Number of pages	4
Journal	Optics Letters
Volume	46
Issue number	15
DOIs	https://doi.org/10.1364/OL.431300
State	Published - Aug 1 2021

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "We report an all-silicon thermally insensitive (-1.5 pm/◦C) 2 × 2 Mach–Zehnder interferometer (MZI) over a spectral range from 1540 to 1620 nm. Additionally, the proposed MZI exhibits no imbalance in its extinction ratio with temperature. The broadband spectral range with minimal temperature sensitivity is achieved by slightly overcompensating the MZI design for temperature variations. At the same time, the uniformity in the extinction ratio is controlled using sub-wavelength grating adiabatic couplers for splitting and combining.",

author = "Zakriya Mohammed and Mahmoud Rasras",

note = "Publisher Copyright: {\textcopyright} 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.",

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AB - We report an all-silicon thermally insensitive (-1.5 pm/◦C) 2 × 2 Mach–Zehnder interferometer (MZI) over a spectral range from 1540 to 1620 nm. Additionally, the proposed MZI exhibits no imbalance in its extinction ratio with temperature. The broadband spectral range with minimal temperature sensitivity is achieved by slightly overcompensating the MZI design for temperature variations. At the same time, the uniformity in the extinction ratio is controlled using sub-wavelength grating adiabatic couplers for splitting and combining.

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Robust broadband athermal 2 × 2 Mach–Zehnder interferometer with sub-wavelength grating adiabatic couplers

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