Sub-Wavelength Waveguide Michelson Interferometer Sensors

Sub-Wavelength Waveguide Michelson Interferometer Sensors

Presenter(s)

Kurugamage Nuwan Asela Perera

Comments

Presentation: 2:00-2:20, LTC Forum

Description

We experimentally demonstrated an asymmetric path enhanced Michelson interferometer sensor with subwavelength waveguides in a silicon-on-insulator (SOI) platform with bulk sensitivity ~775nm/RIU. Numerical simulations indicate feasibility to achieve high sensitivity ~70,000nm/RIU in optimized device geometries. Phase sensitivity is recorded as 72,678 rad/RIU. cm for biotin-streptavidin conjugate detection. By monitoring intensity changes in interferometers, our device can potentially reach a limit of detection of 1.1×10-6 RIU.

Publication Date

4-17-2024

Project Designation

Graduate Research

Primary Advisor

Swapnajit Chakravarty

Primary Advisor's Department

Electro-Optics and Photonics

Keywords

Stander Symposium, School of Engineering

Institutional Learning Goals

Scholarship

Sub-Wavelength Waveguide Michelson Interferometer Sensors

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