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  • Bragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides: Applications and Fundamentals
  • Technical Digest Series (Optica Publishing Group, 1997),
  • paper BTuB.1
  • https://doi.org/10.1364/BGPPF.1997.BTuB.1

Application of photosensitivity in planar silica-on-silicon optical waveguides

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Abstract

Planar lightwave circuit (PLC) devices such as splitters, Mach-Zehnder interferometers and arrayed-waveguide grating (AWG) multiplexers, have been developed using GeO2-SiO2 waveguides on Si substrates. Such devices typically have low propagation and fiber-connection losses. Advanced optical communication systems, such as wavelength division multiplexing (WDM) systems, optical switching systems, and optical access networks[1] uses PLC devices. These silica-based planar waveguides are photosensitive[2]. This property can be used to make new types of PLC devices. For instance, photo-induced refractive index changes have been used for trimming the spectral response in the PLCs and forming Bragg gratings in the same way as used for optical fibers [3].

© 1997 Optical Society of America

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