E. Tangdiongga et al., Performance of optically preamplified receivers detecting signals interfered by homowavelength crosstalk, MICROW OPT, 20(4), 1999, pp. 225-229
Optical receivers used in WDM networks are often preceeded by nn optical am
plifier to ensure good receiver sensitivity. In this letter, we present an
experimental investigation of homowavelength crosstalk in optically preampl
ified systems using an IM/DD transmission scheme. As a light source, a DFB
laser is modulated either directly or externally by an electrical generator
. Performance comparisons for both modulation schemes are given to show the
influences of noise contribution of amplified spontaneous emission (ASE) n
oise. (C) 1999 John Wiley & Sons, Inc.