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Semiconductor light sources for 40-Gb/s transmission systems

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1 Author(s)
Sato, K. ; NTT Network Innovation Labs., NTT Corp., Kanagawa, Japan

The status and prospects of semiconductor light sources for 40-Gb/s transmission systems are reviewed in regard to the following three topics: direct modulation, external modulation, and pulse sources for return-to-zero format. Included are discussions on direct modulation of a 1.3-μm distributed feedback laser for 40-Gb/s very-short-reach optical links, progress made in developing external modulators based on electroabsorption of multiple quantum wells, and mode-locked lasers for carrier-suppressed return-to-zero modulation format.

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Lightwave Technology, Journal of  (Volume:20 ,  Issue: 12 )