Long period fiber gratings couple core and co-propagating cladding modes to produce dips in the transmission spectrum and have been widely utilized as sensors and filters. We have recently developed a...
G. Peterson, A. Carnevale, D. Berreman, and U. Paek. Journal of Non-Crystalline Solids, 38–39, Part 1 (0):
221 - 226(1980)<ce:title>XIIth International Congress on Glass </ce:title>.