Double Resonant Vertically Accessed Optical Waveguide Sensor

Anat Demeter-Finzi; Shlomo Ruschin

doi:10.1109/JSEN.2020.3018231

Double Resonant Vertically Accessed Optical Waveguide Sensor

Anat Demeter-Finzi, Shlomo Ruschin^*

^*Corresponding author for this work

School of Electrical Engineering

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

4 Scopus citations

Abstract

We present a new waveguided-sensing configuration combining the advantages of two effects, namely, two-wave interference and multiple-wave interference in a single sensing device. The sensor is accessed vertically from above by means of a three-port grating, and its readout can be accomplished both in an up-reflective or waveguided mode. The superposition of the two outcoming signals results in a variety of transmission characteristic curves depending on fabrication parameters, which are optimized in order to attain enhanced sensitivity. The sensor analyzed by means of a simple scattering matrix model and confirmed by full FDTD simulations.

Original language	English
Article number	9171905
Pages (from-to)	1478-1484
Number of pages	7
Journal	IEEE Sensors Journal
Volume	21
Issue number	2
DOIs	https://doi.org/10.1109/JSEN.2020.3018231
State	Published - 15 Jan 2021

Keywords

Grating couplers
interferometry
optical sensors
vertical coupling
waveguides

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10.1109/JSEN.2020.3018231

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title = "Double Resonant Vertically Accessed Optical Waveguide Sensor",

abstract = "We present a new waveguided-sensing configuration combining the advantages of two effects, namely, two-wave interference and multiple-wave interference in a single sensing device. The sensor is accessed vertically from above by means of a three-port grating, and its readout can be accomplished both in an up-reflective or waveguided mode. The superposition of the two outcoming signals results in a variety of transmission characteristic curves depending on fabrication parameters, which are optimized in order to attain enhanced sensitivity. The sensor analyzed by means of a simple scattering matrix model and confirmed by full FDTD simulations.",

keywords = "Grating couplers, interferometry, optical sensors, vertical coupling, waveguides",

author = "Anat Demeter-Finzi and Shlomo Ruschin",

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AB - We present a new waveguided-sensing configuration combining the advantages of two effects, namely, two-wave interference and multiple-wave interference in a single sensing device. The sensor is accessed vertically from above by means of a three-port grating, and its readout can be accomplished both in an up-reflective or waveguided mode. The superposition of the two outcoming signals results in a variety of transmission characteristic curves depending on fabrication parameters, which are optimized in order to attain enhanced sensitivity. The sensor analyzed by means of a simple scattering matrix model and confirmed by full FDTD simulations.

KW - Grating couplers

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Double Resonant Vertically Accessed Optical Waveguide Sensor

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