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Proceedings Paper

Optical fiber demultiplexer for telecommunications
Author(s): Riccardo Falciai; Anna Maria Verga Scheggi; Franco Cosi; Jieyuan Cao
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Paper 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.

Paper Details

Date Published: 1 January 1991
PDF: 5 pages
Proc. SPIE 1365, Components for Fiber Optic Applications V, (1 January 1991); doi: 10.1117/12.24658
Show Author Affiliations
Riccardo Falciai, IROE/CNR (Italy)
Anna Maria Verga Scheggi, IROE/CNR (Italy)
Franco Cosi, IROE/CNR (Italy)
Jieyuan Cao, Shanghai Univ. (United States)

Published in SPIE Proceedings Vol. 1365:
Components for Fiber Optic Applications V
Paul M. Kopera, Editor(s)

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