Title :
Coherent Optical Single Carrier Transmission Using Overlap Frequency Domain Equalization for Long-Haul Optical Systems
Author :
Kudo, Riichi ; Kobayashi, Takayuki ; Ishihara, Koichi ; Takatori, Yasushi ; Sano, Akihide ; Miyamoto, Yutaka
Author_Institution :
Network Innovation Labs., Yokosuka, Japan
Abstract :
In this paper, we present coherent optical single carrier transmission (COSC) using overlap frequency domain equalization (OFDE) for the chromatic dispersion (CD) compensation. Residual inter-symbol interference is suppressed by time domain equalization with small tap size. In single polarization transmission, 25-Gb/s COSC transmission with OFDE is demonstrated over 800 km to 4320 km of single-mode fiber (SMF) without optical dispersion compensation. The measured results show that the proposed configuration improves the transmission performance by setting adequate overlapped size of FFT windows and that it is suitable for long-haul optical communication systems.
Keywords :
Fourier transform optics; equalisers; fast Fourier transforms; frequency-domain analysis; intersymbol interference; optical fibre communication; optical fibre dispersion; optical fibre polarisation; FFT windows; bit rate 25 Gbit/s; chromatic dispersion compensation; coherent optical single carrier transmission; distance 800 km to 4320 km; long-haul optical communication system; overlap frequency domain equalization; residual inter-symbol interference; single polarization transmission; single-mode fiber; time domain equalization; Chromatic dispersion; Digital signal processing; Equalizers; Frequency domain analysis; OFDM; Optical fiber communication; Optical fiber polarization; Optical signal processing; Polarization mode dispersion; Q factor; Coherent single carrier transmission (COSC); chromatic dispersion (CD); digital signal processing; long-haul optical communication systems; overlap frequency domain equalization (OFDE);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2024091
