Title :
Quantum limit of direct-detection receivers using duobinary transmission
Author :
Bosco, G. ; Carena, A. ; Curri, V. ; Gaudino, R. ; Poggiolini, P.
Author_Institution :
Dipt. di Elettronica, Politecnico di Torino, Italy
Abstract :
In this letter, a rigorous analysis defining the fundamental limits of direct-detection optically preamplified receivers using duobinary transmission is presented, showing that the quantum limit of duobinary can exceed that of IMDD by 0.91 dB. In addition, we show through simulation that a practical duobinary implementation can closely approach such performance.
Keywords :
optical modulation; optical receivers; quantum optics; wavelength division multiplexing; DWDM; direct-detection optically preamplified receivers; direct-detection receivers; duobinary transmission; fundamental limits; quantum limit; rigorous analysis; wavelength-division multiplexing; Bit error rate; Matched filters; Noise shaping; Optical filters; Optical modulation; Optical noise; Optical pulse shaping; Optical receivers; Optical sensors; Signal to noise ratio;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.805787
