Title :
Polarization-switching techniques for coherent optical communications
Author :
Habbab, I.M.I. ; Cimini, L.J., Jr.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
fDate :
10/1/1988 12:00:00 AM
Abstract :
Several techniques which rely on forcing the polarization state of either the transmitted signal or local oscillator to vary with time in a nonadaptive manner so that polarization-sensitive performance is obtained are discussed. The proposed schemes adopt a novel approach which uses a birefringent medium (for example, high-birefringence single-mode fibers) to implement polarization switching. These techniques require only a single photodetector and give a fixed level of detection performance, with a power penalty of 3 dB relative to heterodyne detection with perfectly matched polarizations
Keywords :
birefringence; light polarisation; optical communication equipment; optical fibres; optical links; optical switches; birefringent medium; coherent optical communications; high-birefringence single-mode fibers; oscillator; photodetector; polarization state; polarization switching; transmitted signal; Degradation; Local oscillators; Optical fiber communication; Optical fiber polarization; Optical filters; Optical mixing; Optical polarization; Optical receivers; Optical sensors; Signal to noise ratio;
Journal_Title :
Lightwave Technology, Journal of