Title :
Dependence of in-band crosstalk penalty on the signal quality in optical network systems
Author :
Kim, Hyang K. ; Chandrasekhar, S.
Author_Institution :
Lucent Technol. Bell Labs., Holmdel, NJ, USA
Abstract :
The in-band crosstalk penalty induced at a different signal quality (optical signal to noise ratio [OSNR], extinction ratio) is investigated. When the OSNR changes from >40 dB to 29 dB, the power penalty at the 25 dB in-band crosstalk increases from 1.5 to 5.5 dB. By choosing an optimal value for the decision level of the receiver, the performance becomes quite tolerant to the varied signal quality as the power penalty induced at a signal having 25 dB of OSNR mixed with 20 dB of crosstalk is less than 2.7 dB.
Keywords :
optical crosstalk; optical fibre networks; optical noise; optical receivers; wavelength division multiplexing; decision level; extinction ratio; in-band crosstalk; in-band crosstalk penalty; optical network systems; optical signal to noise ratio; optimal value; power penalty; receiver; signal quality; varied signal quality; Extinction ratio; Intelligent networks; Optical attenuators; Optical crosstalk; Optical fiber networks; Optical filters; Optical interferometry; Optical noise; Optical receivers; Signal to noise ratio;
Journal_Title :
Photonics Technology Letters, IEEE
