On-chip spectrometer based on an evanescently coupled multimode spiral waveguide

Seng Fatt Liew; Brandon Redding; Raktim Sarma; Yaron Bromberg; Hui Cao

doi:10.1364/CLEO_SI.2016.SM1F.3

Conference on Lasers and Electro-Optics
OSA Technical Digest (2016) (Optica Publishing Group, 2016),
paper SM1F.3
•https://doi.org/10.1364/CLEO_SI.2016.SM1F.3

On-chip spectrometer based on an evanescently coupled multimode spiral waveguide

Seng Fatt Liew, Brandon Redding, Raktim Sarma, Yaron Bromberg, and Hui Cao

CLEO: Science and Innovations 2016

San Jose, California United States
5–10 June 2016
ISBN: 978-1-943580-11-8

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Waveguides & Passive Devices (SM1F)

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S. F. Liew, B. Redding, R. Sarma, Y. Bromberg, and H. Cao, "On-chip spectrometer based on an evanescently coupled multimode spiral waveguide," in Conference on Lasers and Electro-Optics, OSA Technical Digest (2016) (Optica Publishing Group, 2016), paper SM1F.3.

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Abstract

We design and fabricate an on-chip spectrometer based on an evanescently-coupled multimode spiral waveguide. Evanescent coupling between waveguide arms greatly enhances the spectral resolution, reaching 10pm at wavelength 1520nm with a footprint of 500μm×500μm.

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