DIELECTRICS WAVEGUIDE BRAGG GRATING TYPE FREQUENCY SELECTION FILTER

摘要

PROBLEM TO BE SOLVED: To realize a dielectrics waveguide bragg grating type frequency selection filter which has a very narrow frequency selection width.;SOLUTION: A dielectrics waveguide wherein a core 1 is composed of material having permittivity greater than that of a clad 2, is characterized in that dielectrics structures 3 having permittivity different from that of the clad are arranged periodically along an electromagnetic wave direction, from a side surface of the core 1 to the insides of the neighboring clads 2.;COPYRIGHT: (C)2004,JPO