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Intended for the next generation of optical access networks, OCDMA is of great interest to meet the demand of increasing the number of users per access fiber, especially as spectral phase coding increases its performance in the optical domain. This, however, requires handling broad spectra and short pulses, which are best dealt with using opto-electronic or all-optical devices instead of slower electronics...
The internally coded time-hopping coherent ultra-short light pulse code division multiple access (CULP CDMA) scheme (recently introduced) with an optical amplifier is described and its performance in fibre-optic communication systems is analysed. In accordance with the important role of optical amplifiers in optical communication systems, a preamplifier at the input of the receiver is used in order...
In this paper, we present a two-dimensional (2D) optical code-division multiple-access (OCDMA) system with multi-wavelength pulse modulation (MWPM) and double optical hard-limiters (DHL). In the proposed system, each user is sending optical pulses spread in both wavelength and time domains and the receiver is equipped with two optical hard-limiters before and after fiber Bragg grating (FBG) decoders...
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