Temperature insensitive waveguide interferometer based on subwavelength gratings

Korai, Umair A. and Bermello, Alaine H. and Strain, Michael J. and Glesk, Ivan and Velasco, Aitor V. (2019) Temperature insensitive waveguide interferometer based on subwavelength gratings. In: 2nd IEEE British and Irish Conference on Optics and Photonics, 2019-12-11 - 2019-12-13, IET Savoy London.

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We present a design for a temperature insensitive Mach-Zehnder interferometer in which temperature compensating segment is achieved through tailored subwavelength gratings. By engineering the thermal response and the relative length of this segment, an overall temperature insensitivity below ±4pm/ºK is predicted for 100nm bandwidth around 1550nm.


Korai, Umair A., Bermello, Alaine H., Strain, Michael J. ORCID logoORCID: https://orcid.org/0000-0002-9752-3144, Glesk, Ivan ORCID logoORCID: https://orcid.org/0000-0002-3176-8069 and Velasco, Aitor V.;