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Proceedings Paper

Analysis of wavelength division multiplexing technique for optical data storage
Author(s): Tony T. Yuk; Joseph C. Palais
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Paper Abstract

Wavelength division multiplexing (WDM) is a technique that enables several light sources operating at different wavelengths to simultaneously transmit through a single medium and has been widely used in fiber optics industry [1,21. One can apply the WDM technique to read several tracks of an optical disc in parallel so as to increase the data transfer rate. In section 2, the operating principles and associated design parameters of the WDM optical readout system are examined. The properties of laser diodes (LDs) that limit the number of wavelength channels to be multiplexed are the spectral spread of the diodes and -peak emission wavelength deviations. These factors affect the minimum channel spacing. The insertion loss and the adjacent channel crosstalk of the wavelength demultiplexer (DEMUX) in the WDM readout system are needed to be minimized. Dependence of both parameters on the spectral spread of the light sources and channel spacing are addressed in section 2.

Paper Details

Date Published: 1 March 1991
PDF: 8 pages
Proc. SPIE 1401, Optical Data Storage Technologies, (1 March 1991); doi: 10.1117/12.26134
Show Author Affiliations
Tony T. Yuk, Univ. of Hong Kong (Hong Kong)
Joseph C. Palais, Arizona State Univ. (United States)


Published in SPIE Proceedings Vol. 1401:
Optical Data Storage Technologies

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