Abstract

A duobinary encoded signal has half the spectrum bandwidth compared to the binary signal. One report has confirmed the transmission distance increase made possible by the reduced fiber chromatic dispersion effect of an optical duobinary intensity modulated (IM) signal.¹ Recently, we proposed phase inverted optical duobinary modulation, which adds the advantages of simple receiver configuration and carrier frequency component suppression.² This modulation scheme should offer enhanced launched power due to its suppression of the stimulated Brilliouin scattering (SBS) and the same receiver sensitivity as binary IM.² In this study, we demonstrate the repeaterless transmission of a phase inverted duobinary signal at 10 Gb/s via a standard single-mode fiber.

© 1995 IEEE