Meander coupler, a novel wavelength division multiplexer/demultiplexer

摘要

We have realized a novel wavelength division multiplexer/demultiplexer based on rib waveguides in GaInAsP/InP. The device is a strongly asymmetric codirectional coupler with periodic variation of the coupling constant and has sinc2hyphen;type characteristics. Our devices have center wavelengths around 1.3 mgr;m, filter halfhyphen;widths 10ndash;15 nm, and far end isolation down to minus;17 dB. The structure is suited for integration into optoelectronic integrated circuits for applications in bidirectional optical communication systems.