In this project we design and fabricate a hyperbolic metamaterials-based narrowband notch filter for the mid-wave infrared regime with an angle-of-incidence independent center-wavelength for TM polarized incident light. To achieve angle of incidence independence, a subwavelength sized array of copper wires is inserted in a vertical orientation and permeates the three middle layers of the seven layer Bragg stack filter. Analysis using Maxwell- Garnett theory and full-wave electromagnetic modeling, and the fabrication progress to date are presented. Narrowband notch filters have applications in optical communications systems, and remote sensors such as hyperspectral and multi-spectral sensing and imaging.

Date Published: 13 May 2019
PDF: 7 pages
Proc. SPIE 10980, Image Sensing Technologies: Materials, Devices, Systems, and Applications VI, 109800A (13 May 2019); doi: 10.1117/12.2522262

Published in SPIE Proceedings Vol. 10980:
Image Sensing Technologies: Materials, Devices, Systems, and Applications VI
Nibir K. Dhar; Achyut K. Dutta; Sachidananda R. Babu, Editor(s)