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.

[img]
Preview
Text (Korai-etal-BICOP2019-Temperature-insensitive-waveguide-interferometer-based-on-subwavelength-gratings)
Korai_etal_BICOP2019_Temperature_insensitive_waveguide_interferometer_based_on_subwavelength_gratings.pdf
Accepted Author Manuscript

Download (514kB)| Preview

    Abstract

    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.