Performance Of Optical Communication Research Articles

Performance of shot-noise limited optical communications in presence of intersymbol interference

Results are presented for the average error probability of shot-noise limited on-off-keying optical communications in the presence of intersymbol interference. An expression for a near-optimum detection threshold is given and the results of evaluating the probability of error for this threshold are shown.

Theoretical performance of direct detection optical communication with AlGaAs laser transmitters, avalanche photodiode detectors, and color-coded PPM signaling

Theoretical performance characteristics are presented for a direct detection optical communication system that has peak power limited laser diode transmitters and avalanche photodiode photodetectors. The singal format consists of the transmission of a group of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">L</tex> binary source digits as a single light pulse at one of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">N</tex> nonoverlapping optical center frequencies (colors) in one of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">M</tex> possible time slots. The system achieves a given received symbol error probability at lower peak signal intensities with a less complicated receiver structure than can be obtained with an ordinary pulse position modulation system of the same alphabet size and source data rate.