Proposal of WDM receiving structure using tilted FBGs

摘要

Tilted fiber Bragg grating can couple light both to backward propagating core modes and cladding modes. We propose a WDM receiving device with high cladding and/or radiation mode coupling efficiency using etched cladding parts and tilted Fiber Bragg gratings(TFBGs) which are key components for doing wavelength selective operations. Each channel exhibits the cladding and radiation mode coupling efficiency of approximately 20 %.