Superimposed grating wavelength division multiplexing in Ge-doped SiO2/Si planar waveguides
Date
1998Source
Optical EngineeringVolume
37Issue
2Pages
717-720Google Scholar check
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An improved model of wavelength division multiplexing (WDM) by superimposed gratings in planar waveguides has been developed. Based on this theory, principal design rules of N-channel WDM are established and a fanout capacity of 100 is estimated. Finally, fourchannel WDM at 840 nm has been demonstrated on a Ge:SiO2/SiO2/Si planar waveguide, which was hydrogenated to enhance its photosensitivity. The superimposed gratings were written using a narrow linewidth KrF excimer laser in an interferometric setup used in inscribing fiber Bragg gratings. © 1998 Society of Photo-Optical Instrumentation Engineers.