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Proceedings Paper

Designs For High Channel Density Single-Mode Wavelength-Division-Multiplexers
Author(s): G R Chamberlin; A M Hill
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Paper Abstract

There is growing interest in the use of wavelength-division-multiplexing for providing wideband switched services in the local network. In some proposed network structures it is important to be able to multiplex as many channels as possible in the 1250 - 1600 nm operating window of single-mode fibre. A conventional wavelength multiplexer consists of a fibre array, a single lens and a diffraction grating. Although capable of producing low insertion losses, this device has a narrow channel bandwidth with respect to the channel spacing. This relative bandwidth is given approximately by the ratio of the fibre core and cladding diameters ( 10/125 for standard single-mode fibre ). In order to multiplex multi-longitudinal-mode lasers with a spectral width perhaps as high as 5 nm, large channel spacings are required. In this paper, improved designs of wavelength-division-multiplexer are described which provide greater channel packing density than conventional multiplexers.

Paper Details

Date Published: 4 February 1988
PDF: 7 pages
Proc. SPIE 0839, Components for Fiber Optic Applications II, (4 February 1988); doi: 10.1117/12.942547
Show Author Affiliations
G R Chamberlin, British Telecom Research Laboratories (England)
A M Hill, British Telecom Research Laboratories (England)


Published in SPIE Proceedings Vol. 0839:
Components for Fiber Optic Applications II
Vincent J. Tekippe, Editor(s)

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