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Nearly dispersion-penalty-free transmission using blue-shifted 1.55- mu m distributed feedback lasers

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4 Author(s)
Lin, M.S. ; AT&T Bell Labs., Murray Hill, NJ, USA ; Wang, S.J. ; Kuo, C.Y. ; Melley, M.P.

Nearly dispersion-penalty-free transmission over 40 km of nondispersion-shifted single-mode fiber was demonstrated using blue-shifted 1.55- mu m distributed feedback lasers. This good system performance is attributed to the narrow and blue-shifted modulated optical spectrum which is in turn associated with the soft turn-on light-current characteristics. Transmission experiments using lasers with hard turn-on light-current characteristics give rise to broad modulated spectra and higher dispersion penalties.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:2 ,  Issue: 10 )