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Meander coupler, a novel wavelength division multiplexer/demultiplexer

 

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Applied Physics Letters 57 (1990), Nr.24, S.2517-19
ISSN: 0003-6951
ISSN: 1077-3118
Englisch
Zeitschriftenaufsatz
Fraunhofer HHI ()
frequency division multiplexing; gallium arsenide; iii-v semiconductors; indium compounds; optical communication equipment; optical couplers; optical isolators; meander coupler; wavelength division multiplexer/demultiplexer; rib waveguides; asymmetric codirectional coupler; coupling constant; center wavelengths; filter half-widths; far end isolation; integration; optoelectronic integrated circuits; bidirectional optical communication systems; 1.3 micron; GaInAsP-InP

Abstract
The authors 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 sinc2-type characteristics. Their devices have center wavelengths around 1.3 mu m, filter half-widths 10-15 nm, and far end isolation down to -17 dB. The structure is suited for integration into optoelectronic integrated circuits for applications in bidirectional optical communication systems.

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