Tapered Fabry-Perot waveguide optical demultiplexer

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 wave...

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Bibliographic Details
Published in:IEEE photonics technology letters 1993-09, Vol.5 (9), p.1082-1085
Main Authors: Pezeshki, B., Tong, F.K., Kash, J.A., Kisker, D.W., Potemski, R.M.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Fabry-Perot
Miscellaneous
Optical and optoelectronic circuits
Optical coupling
Optical refraction
Optical resonators
Optical variables control
Optical waveguides
Refractive index
Resonance
Spectroscopy
Wavelength division multiplexing
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Description
Summary: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.< >
ISSN:1041-1135
1941-0174
DOI:10.1109/68.257199