Air gap resonant tunneling bandpass filter and polarizer

Opt Lett. 2016 Apr 15;41(8):1845-8. doi: 10.1364/OL.41.001845.

Abstract

We describe a bandpass filter based on resonant tunneling through an air layer in the frustrated total internal reflection regime, and show that the concept of induced transmission can be applied to the design of thin film matching stacks. Experimental results are reported for Si/SiO2-based devices exhibiting a polarization-dependent passband, with bandwidth on the order of 10 nm in the 1550 nm wavelength range, peak transmittance on the order of 80%, and optical density greater than 5 over most of the near infrared region.

Publication types

  • Research Support, Non-U.S. Gov't