Optical fiber demultiplexer for telecommunications

Riccardo Falciai; Anna Maria Verga Scheggi; Franco Cosi; Jieyuan Cao

doi:10.1117/12.24658

1 January 1991 Optical fiber demultiplexer for telecommunications

Riccardo Falciai, Anna Maria Verga Scheggi, Franco Cosi, Jieyuan Cao

Proceedings Volume 1365, Components for Fiber Optic Applications V; (1991) https://doi.org/10.1117/12.24658
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States

Abstract

The paper is concerned with a wavelength mux-demux device for multimode and monomode fibers assembled through micro-optic technique. The proposed device makes use of a 45 incidence dichroic filter as a dispersive element and of GRINrod lenses as collimating/ focusing optics. It was designed utilizing two glass prisms with isosceles triangle cross-section between which the filter is inserted while three GRIN lenses connected to the fibers are cemented on the lateral faces of the prisms thus forming a monolithic block. Two different prototypes of the device have been constructed: the first one making use of multimode fibers and the other one utilizing monomode fibers. Narrow band-pass filters centered on the working wavelengths were also inserted on the output ports so to reduce the cross-talk. A description of the two device assembling and characterization measurement are reported.

Citation Download Citation

Riccardo Falciai, Anna Maria Verga Scheggi, Franco Cosi, and Jieyuan Cao "Optical fiber demultiplexer for telecommunications", Proc. SPIE 1365, Components for Fiber Optic Applications V, (1 January 1991); https://doi.org/10.1117/12.24658

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