Title :
Noise filtering with the nonlinear optical loop mirror
Author :
Olsson, Bengt-Erik ; Andrekson, Peter A.
Author_Institution :
Dept. of Optoelectron. & Electr. Meas., Chalmers Univ. of Technol., Goteborg, Sweden
fDate :
2/1/1995 12:00:00 AM
Abstract :
The operation of a nonlinear optical loop mirror as a passive and signal polarization independent noise filter, is investigated experimentally. Spontaneous emission not within the signal spectrum is rejected leaving a receiver noise limited solely by signal-spontaneous beat noise. The receiver power penalty caused by spontaneous emission (@BER=10-9 (PRBS)) was improved from 3 dB to 0.4 dB by propagating a signal through the loop. A comparison between this nonlinear filtering: technique and a variable band-pass filter is also made
Keywords :
mirrors; nonlinear optics; optical fibre communication; optical fibre polarisation; optical filters; optical noise; optical receivers; spontaneous emission; noise filtering; nonlinear filtering; nonlinear optical loop mirror; passive noise filter; receiver noise; receiver power penalty; signal polarization independent noise filter; signal spectrum; signal-spontaneous beat noise; spontaneous emission; variable band-pass filter; Band pass filters; Filtering; Mirrors; Nonlinear optics; Optical filters; Optical noise; Optical polarization; Optical receivers; Spontaneous emission; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
