1 March 1991 Analysis of wavelength division multiplexing technique for optical data storage
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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.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tony T. Yuk, Joseph C. Palais, "Analysis of wavelength division multiplexing technique for optical data storage", Proc. SPIE 1401, Optical Data Storage Technologies, (1 March 1991); doi: 10.1117/12.26134; https://doi.org/10.1117/12.26134

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