ACOUSTO-OPTIC TUNABLE APPARATUS HAVING A FIBER BRAGG GRATING AND AN OFFSET CORE

摘要

A method and apparatus that microbend a fiber Bragg grating with a transverse acoustic wave. The fiber Bragg grating reflects one or more Nth order sidebands of reflection wavelengths an optical signal in order to couple the band of wavelenghts within from a first mode to a second mode.