fibreoptic communication links;
digital signal transfer format;
wavelength-division multiplexing;
frequency channels;
fibres for data transfer;
D O I:
10.1070/QE2004v034n09ABEH002803
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
A flat-top format is proposed for the transmission of digital signals with the sine-shaped profile of a single pulse resonantly located along several bit intervals. Due to a rapid decrease of the spectral power, such a format reduces the interaction between two adjacent frequency channels. Numerical simulation showed the possibility of error-free transmission at a rate of 40 Gbit s(-1) over 1200 km in the link with the 0.8-bit s(-1) Hz(-1) spectral efficiency without using polarisation wavelength-division multiplexing.