In this paper, a new method is presented to exploit the cross-gain modulation mechanism in semiconductor optical amplifiers to reduce the intensity noise of spectrum-sliced communications systems via conversion of the modulated incoherent optical signal into a coherent signal before the detection process. Wavelength-division-multiplexed networks using broad-band sources have performance limited by intensity noise; conversion from an incoherent to a coherent signal reduces the intensity noise and enables the elimination of the bit-error-rate floor.
© 2005 IEEE
M. Menif, W. Mathlouthi, P. Lemieux, L. A. Rusch, and M. Roy, "Error-Free Transmission for Incoherent Broad-Band Optical Communications Systems Using Incoherent-to-Coherent Wavelength Conversion," J. Lightwave Technol. 23, 287- (2005)