Title :
Performance analysis of DPSK direct detection optical systems in the presence of interferometric intensity noise
Author :
Pires, Joao J O ; Rocha, Jodé R F da
Author_Institution :
Dept. of Electr. & Comput. Eng., Tech. Univ. of Lisbon, Portugal
fDate :
11/1/1992 12:00:00 AM
Abstract :
The performance of DPSK direct detection optical systems using a dual detector receiver is analyzed by means of a Gauss quadrature rules method. The filtering effects on the intensity noise, resulting from the interferometric conversion of laser phase noise, and the influence of laser relaxation oscillations are also investigated. Linewidth requirements are estimated and compared with that of DPSK heterodyne systems. It is shown that linewidth requirements can be relaxed by a factor of about 0.56, when baseband filtering effects are taken into account
Keywords :
light interferometers; optical modulation; optical receivers; phase shift keying; semiconductor device noise; spectral line breadth; DPSK direct detection optical systems; Gauss quadrature rules method; baseband filtering effects; dual detector receiver; filtering effects; interferometric intensity noise; laser phase noise; laser relaxation oscillations; light interferometry; linewidth requirements; optical filters; photodetectors; semiconductor laser noise; Differential quadrature phase shift keying; Filtering; Optical detectors; Optical filters; Optical interferometry; Optical mixing; Optical noise; Optical receivers; Performance analysis; Phase noise;
Journal_Title :
Lightwave Technology, Journal of
