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Over 1000 km FSK heterodyne transmission system experiment using erbium-doped optical fiber amplifiers and conventional single-mode fibers

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4 Author(s)
Ryu, S. ; KDD Meguro Res. & Dev. Lab., Tokyo, Japan ; Edagawa, N. ; Yoshida, Y. ; Wakabayashi, H.

The influence of spontaneous emission noise on coherent transmission systems using multistage erbium-doped optical fiber amplifiers is experimentally examined. A frequency-shift keying (FSK) heterodyne transmission experiment was successfully performed at 560 Mb/s through 1028 km of fiber using ten cascaded fiber amplifiers and conventional single-mode fibers with a zero dispersion wavelength of around 1.3 mu m. In the experiment, no transmission penalty due to accumulated spontaneous emission noise or to fiber chromatic dispersion was observed.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:2 ,  Issue: 6 )