Optical labeling system using FSK for label encoding and PPM for payload modulation

Xu, Lei and Wang, Ting and Glesk, Ivan and Prucnal, Paul R. (2005) Optical labeling system using FSK for label encoding and PPM for payload modulation. In: 2005 Conference on Lasers and Electro-Optics, CLEO. UNSPECIFIED, pp. 1049-1051. ISBN 9781557527950

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Abstract

We demonstrate an optical labeling system using frequency-shift-keying (FSK) for label encoding and pulse-position-modulation (PPM) for payload modulation. The scheme relieves the extinction-ratio impairment in systems using FSK for labeling and on-off-keying for payload modulation.