Grating Coupler/Demultiplexer For Fibre-Optic Local-Area Networks Using Wavelength-Division Multiplexing

Torsten von Lingelsheim

doi:10.1117/12.966535

6 July 1986 Grating Coupler/Demultiplexer For Fibre-Optic Local-Area Networks Using Wavelength-Division Multiplexing

Torsten von Lingelsheim

Proceedings Volume 0585, Fiber Optic Broadband Networks; (1986) https://doi.org/10.1117/12.966535
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France

Abstract

The use of wavelength-division multiplexing in future fibre-optic local-area networks allows sophisticated system performance and modular system flexibility. For this purpose a wavelength selective branching coupler is required, which branches from the trunk fibre carrying multiwavelength signals to the special wavelength channels needed at the actual node. For bus or loop structured networks we developed such branching couplers, which consist of a special grating as dispersive element and micro-optical graded index lenses (GRIN rods) for light collimation and refocussing. Two different branching couplers have been designed and built. The first is a simple WDM demultiplexer in Littrow configuration with 830 nm and 1300 nm channel separation, and the second a more sophisticated arrangement, where input and output arms to the trunk as well as both first order fibre arrays have each their own graded index lens mount and adjustment facilities.

Citation Download Citation

Torsten von Lingelsheim "Grating Coupler/Demultiplexer For Fibre-Optic Local-Area Networks Using Wavelength-Division Multiplexing", Proc. SPIE 0585, Fiber Optic Broadband Networks, (6 July 1986); https://doi.org/10.1117/12.966535

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