Title :
Ultra high speed coherent optical communication using digital signal processing techniques along with advanced modulation system
Author :
Uddin, Mohammad Shorif ; Hamja, Md Amir
Author_Institution :
Dept. of EEE, Univ. of Dhaka, Mymensingh, Bangladesh
Abstract :
Recent coherent optical communication systems address modulation and detection techniques for high spectral efficiency and robustness against transmission impairments. This paper demonstrates the generation and transmission of beyond 400Gb/s transmission system over the standard 50GHz ITU-T grid at a net spectral efficiency of 8.4b/s/Hz. Coherent detection employing QAM modulation formats along with DSP algorithm have become one of the most promising technologies for next generation high speed transmission systems due to the high power and spectral efficiencies. This paper shows that, the use of near ideal Nyquist pulse shaping, spectrally-efficient high-order modulation format, and distributed Raman amplification, coherent equalization may enable us to operate future 400G systems over the standard 50GHz-grid optical network.
Keywords :
digital signal processing chips; equalisers; optical communication; optical fibre networks; quadrature amplitude modulation; DSP algorithm; ITU-T grid; QAM modulation format; advanced modulation system; coherent equalization; digital signal processing technique; distributed Raman amplification; near ideal Nyquist pulse shaping; optical network; spectrally efficient high order modulation format; ultrahigh speed coherent optical communication; Clocks; Coherence; Digital signal processing; Modulation; Optical fiber communication; Optical fibers; Optical receivers; Nyquist pulse; QAM; Wave length division multiplexing (WDM); coherent detection; digital signal processing (DSP);
Conference_Titel :
Electrical Engineering and Information & Communication Technology (ICEEICT), 2014 International Conference on
Conference_Location :
Dhaka
Print_ISBN :
978-1-4799-4820-8
DOI :
10.1109/ICEEICT.2014.6919032
