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Optical duobinary transmission system featuring improved receiver sensitivity and reduced optical bandwidth

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2 Author(s)
Hoon Kim ; Lucent Technol. Bell Labs, Holmdel, NJ, USA ; Yu, C.X.

We propose and demonstrate a simple method to improve both the receiver sensitivity and spectral efficiency of the optical duobinary transmission system. Compared to the conventional duobinary signal generated by using an electrical low-pass filter, more than 1-dB improvement of receiver sensitivity and /spl sim/20% reduction in the spectral width are achieved simply by filtering the 10-Gb/s duobinary signals with a narrow-bandwidth (7 GHz) optical filter.

Published in:

Photonics Technology Letters, IEEE  (Volume:14 ,  Issue: 8 )