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http://dx.doi.org/10.3807/JOSK.2010.14.1.028

Spectrally Phase Coded Waveform Discrimination at 10 GHz for Narrow Band Optical CDMA within 100 GHz Spectral Window  

Seo, Dong-Sun (Department of Electronic Engineering, Myongji University)
Supradeepa, V.R. (Department of Electrical Engineering, Purdue University)
Publication Information
Journal of the Optical Society of Korea / v.14, no.1, 2010 , pp. 28-32 More about this Journal
Abstract
We demonstrate binary spectral phase coded waveform discrimination at 10 GHz for narrow band optical code-division multiple-access (NB-OCDMA) via direct electrical detection without using any optical hard-limiter. Only 9 phase-locked, 10 GHz spaced, spectral lines within a 100 GHz spectral window are used for the phase coding. Considerably high contrast ratio of 5 between signal and multiuser access interference noise can be achieved for $4{\times}10\;G\;pulse/sec$ timing coordinated OCDMA at a simple electrical receiver with 50 GHz bandwidth.
Keywords
Optical code-division multiple-access (OCDMA); Spectral phase coding; Pulse shaping; Spectral efficiency;
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