Title :
Tapered Fabry-Perot waveguide optical demultiplexer
Author :
Pezeshki, B. ; Tong, F.K. ; Kash, J.A. ; Kisker, D.W. ; Potemski, R.M.
Author_Institution :
IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA
Abstract :
We describe a novel waveguide spectrometer for use in wavelength division multiplexing (WDM) systems. A high refractive index resonator is coupled to a waveguide and extracts light from the waveguide at its resonance frequency. A taper in the thickness of the resonator allows light of different wavelengths to be extracted at different positions. A structure is fabricated for use at 750 nm with a measured dispersion of 29 nm/cm and a wavelength resolution of 1 nm. The device operation is in good agreement with first-order coupled-mode calculations.<>
Keywords :
light interferometers; multiplexing equipment; optical resonators; optical waveguides; refractive index; spectrometers; wavelength division multiplexing; WDM; device operation; first-order coupled-mode calculations; high refractive index resonator; measured dispersion; resonance frequency; tapered Fabry-Perot waveguide optical demultiplexer; waveguide spectrometer; wavelength division multiplexing; wavelength resolution; Fabry-Perot; Optical coupling; Optical refraction; Optical resonators; Optical variables control; Optical waveguides; Refractive index; Resonance; Spectroscopy; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
