Title :
An approach to reduce four-wave mixing effect on existing G.653 fibers for WDM applications
Author :
Singh, Shree Prakash ; Kar, Subrat ; Jain, Veerendra Kumar
Author_Institution :
Dept. of Electr. & Comput. Eng., NSIT, New Delhi
Abstract :
Four-wave mixing (FWM) is a dominant non-linear effect present in wavelength division multiplexing (WDM) networks employing dispersion shifted fiber (i.e., G.653 compliant fiber). To reduce the number of FWM components generated, unequally spaced channel allocation scheme is used. However, it results in increased bandwidth. To overcome this problem, modified periodically unequally spaced channel allocation (PUSCA) scheme can be used which results in fewer FWM components and efficient bandwidth utilization. To further reduce the number of FWM components, paired PUSCA method can be employed. In this paper, a comparative study of both the methods has been made. A figure of merit, defined as the ratio of increase in weighted average signal to FWM noise ratio to increase in bandwidth for a given scheme has been used as a metric of performance. Further, the performance of paired PUSCA scheme on G.653 fiber has been compared with equally spaced channel allocation (ESCA) scheme on G.652 fiber in which FWM is not a dominant non-linear effect. It has been observed that paired PUSCA on G.653 fiber performs better than ESCA on G.652 fiber when the number of channels is less than 30
Keywords :
channel allocation; multiwave mixing; optical fibre networks; wavelength division multiplexing; G.652 fiber; G.653 fibers; WDM networks; dispersion shifted fiber; equally spaced channel allocation scheme; four-wave mixing effect; noise ratio; paired periodically unequally spaced channel allocation scheme; wavelength division multiplexing networks; weighted average signal; Bandwidth; Channel allocation; Crosstalk; Four-wave mixing; Optical fiber dispersion; Optical fiber networks; Optical fibers; Signal generators; WDM networks; Wavelength division multiplexing;
Conference_Titel :
Wireless and Optical Communications Networks, 2006 IFIP International Conference on
Conference_Location :
Bangalore
Print_ISBN :
1-4244-0340-5
DOI :
10.1109/WOCN.2006.1666637