Abstract
In recent years, there has been a great deal of research into development and application of photosensitive glasses. The changes in refractive index due to the UV exposure has been used for Bragg gratings [1], optical trimming [2] and direct writing of channel waveguides [3]. In particular, Bragg gratings have numerous applications such as narrow-band reflectors for fiber and waveguide lasers, add-drop multiplexers, sensors and dispersion compensation devices.
© 1997 Optical Society of America
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