Compact interferometer devices for chip-based chem-bio sensing

Swapnajit Chakravarty; Jianhao Shen; Daniel Donnelly; Asela Perera

doi:10.1117/12.3002996

13 March 2024 Compact interferometer devices for chip-based chem-bio sensing

Swapnajit Chakravarty, Jianhao Shen, Daniel Donnelly, Asela Perera

Proceedings Volume PC12861, Frontiers in Biological Detection: From Nanosensors to Systems XVI; PC1286102 (2024) https://doi.org/10.1117/12.3002996
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

Changes in the real and imaginary parts of the waveguide effective index in the presence of analytes have been used in various microcavity and slow light devices for on-chip sensing and absorption spectroscopy respectively in diverse applications. Periodically patterned waveguide sensors in interferometer configurations can lead to small interferometer sizes comparable in dimensions to microcavity resonator sensors, and/or significantly higher sensitivities compared to resonator type sensors. We show our work with compact silicon photonic interferometer devices for on-chip biosensing and absorbance sensing, overcoming fabrication tolerances with post-fabrication phase trimming.

Conference Presentation

Citation Download Citation

Swapnajit Chakravarty, Jianhao Shen, Daniel Donnelly, and Asela Perera "Compact interferometer devices for chip-based chem-bio sensing", Proc. SPIE PC12861, Frontiers in Biological Detection: From Nanosensors to Systems XVI, PC1286102 (13 March 2024); https://doi.org/10.1117/12.3002996

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