Title :
Suppression of influence of homowavelength crosstalk in an optical add/drop multiplexing system by modulating LD light frequency
Author_Institution :
NTT Labs., Kanagawa, Japan
Abstract :
A scheme for reducing influence of homowavelength crosstalk in an optical add/drop multiplexing network is described. Signal light outputs from center to remote nodes are frequency-modulated as well as intensity-modulated for data transmission. Due to the frequency modulation, interferometric noise between the signal and crosstalk light is suppressed through the baseband filter in the receiver. The feasibility is confirmed in experiments.
Keywords :
frequency modulation; interference suppression; laser noise; light interference; multiplexing equipment; optical crosstalk; optical filters; optical modulation; optical receivers; semiconductor lasers; wavelength division multiplexing; LD light frequency; baseband filter; data transmission; frequency modulation; homowavelength crosstalk; intensity-modulation; interferometric noise; optical add/drop multiplexing system; receiver; signal light outputs; Baseband; Data communication; Frequency modulation; Optical crosstalk; Optical fiber networks; Optical filters; Optical interferometry; Optical modulation; Optical noise; Optical receivers;
Journal_Title :
Photonics Technology Letters, IEEE
