Designs For High Channel Density Single-Mode Wavelength-Division-Multiplexers

G R Chamberlin; A M Hill

doi:10.1117/12.942547

4 February 1988 Designs For High Channel Density Single-Mode Wavelength-Division-Multiplexers

G R Chamberlin, A M Hill

Proceedings Volume 0839, Components for Fiber Optic Applications II; (1988) https://doi.org/10.1117/12.942547
Event: Cambridge Symposium on Fiber Optics and Integrated Optoelectronics, 1987, Cambridge, MA, United States

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.

Citation Download Citation

G R Chamberlin and A M Hill "Designs For High Channel Density Single-Mode Wavelength-Division-Multiplexers", Proc. SPIE 0839, Components for Fiber Optic Applications II, (4 February 1988); https://doi.org/10.1117/12.942547

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