Journal article
Analyses of spectral efficiency and nonlinear tolerance of DPSK formats in 160-Gb/s Raman amplified systems
Five-channel 160-Gb/s wavelength-division-multiplexing (WDM) systems using ABA dispersion map and Raman amplification are investigated numerically. Transmission distance and system margin are evaluated for return-to-zero differential phase-shift keying (RZ-DPSK) and carrier-suppressed return-to-zero (CSRZ)-DPSK formats.
The results show that RZ-DPSK can offer 2300-km system reach at large WDM channel spacing, while CSRZ-DPSK is more robust against nonlinear effects in the fibers and offers a reach of 1900 km at a spectral efficiency of 0.53 b/s/Hz. CSRZ-DPSK can also provide twice the dispersion tolerance of RZ-DPSK and larger spectral efficiency.
Language: | English |
---|---|
Publisher: | IEEE |
Year: | 2005 |
Pages: | 1552-1554 |
ISSN: | 19410174 and 10411135 |
Types: | Journal article |
DOI: | 10.1109/LPT.2005.848403 |
ORCIDs: | Rottwitt, Karsten and Jeppesen, Palle |
Band pass filters Channel spacing Differential phase shift keying Differential phase-shift keying (DPSK) Differential quadrature phase shift keying Dispersion Erbium-doped fiber amplifier Modulation Raman scattering Spectral analysis Stimulated emission Wavelength division multiplexing modulation format optical transmission