Configurable TE- and TM-Pass Graphene Oxide-Coated Waveguide Polarizer
Document Type
Article
Publication Date
6-1-2020
Abstract
A configurable optical waveguide polarizer using graphene oxide (GO) as a polarizing element has been demonstrated. The propagation characteristics of the GO-coated optical waveguide are changed from TM-pass to TE-pass by controlling the GO coating thickness in the sub-micron range during the deposition process. The highest extinction ratio measured for a TM-pass waveguide polarizer is 34.9 dB, using a coating length and thickness of 1.0 mm and $0.34\textbackslashmu \textbackslashtext{m}$ respectively, while the highest extinction ratio measured for a TE-pass polarizer is 46.0 dB, using a coating length and thickness of 1.0 mm and $0.71\textbackslashmu \textbackslashtext{m}$ respectively. The polarization extinction ratio has also been measured across the wavelength range from 1520 nm to 1620 nm - and a variation of less than 3.0 dB was obtained. Control of the coating thickness dependent characteristics of the GO-coated waveguides provides an avenue for tailoring of the polarization selection.
Keywords
Graphene oxide, Planarized optical waveguide, Silica
Divisions
photonics
Publication Title
IEEE Photonics Technology Letters
Volume
32
Issue
11
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Publisher Location
445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA