The duobinary technique, at first proposed for radio communications has recently re-emerged in the field of optical communications as a possible candidate for next generation of ultra-DWDM systems. The purpose of this work is to derive, for the first time to our knowledge, the back-to-back sensitivity (quantum limit) of duobinary technique in ASE-noise-limited direct-detected optical systems: we found that it is at least 0.91 dB better than the IMDD limit and we show that a practical duobinary system setup could closely approach the quantum limit.
ASE-noise limit of direct-detection receivers: duobinary vs. IMDD
The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society ; 2 ; 776-777 vol.2
2002-01-01
163252 byte
Conference paper
Electronic Resource
English
ThQ3 ASE-Noise Limit of Direct-Detection Receivers: Duobinary vs. IMDD
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