Title :
A reduction of interferometric phase-to-intensity conversion noise in fiber links by large index phase modulation of the optical beam
Author :
Yariv, Amnon ; Blauvelt, Hank ; Wu, Shu-Wu
Author_Institution :
Ortel Corp. Alhambra, CA, USA
fDate :
7/1/1992 12:00:00 AM
Abstract :
A noise reduction scheme for long haul fiber amplitude modulation (AM) systems is proposed and analyzed. Such systems suffer from intensity noise which results from interference between the (twice) Rayleigh scattered light and the directly transmitted beam. This interference converts the fundamental phase noise of the laser to intensity noise. It is shown that a strong phase modulation of the output of the laser beam causes a large reduction of the detected signal noise in the vicinity of the detected signal components
Keywords :
Rayleigh scattering; electron device noise; light interference; optical links; optical modulation; phase modulation; Rayleigh scattered light; detected signal; detected signal noise; directly transmitted beam; fiber links; fundamental phase noise; interferometric phase-to-intensity conversion noise; large index phase modulation; laser beam; laser phase noise; light interference; long haul fiber amplitude modulation; noise reduction scheme; optical beam; refractive index; strong phase modulation; Amplitude modulation; Interference; Laser beams; Laser noise; Noise reduction; Optical interferometry; Phase detection; Phase noise; Rayleigh scattering; Signal detection;
Journal_Title :
Lightwave Technology, Journal of
