Challenges to FDM-QAM coherent transmission with ultrahigh spectral efficiency

Author

Nakazawa, Masataka

Author_Institution

Res. Inst. of Electr. Commun., Tohoku Univ.

fYear

2008

fDate

21-25 Sept. 2008

Firstpage

1

Lastpage

1

Abstract

Quadrature amplitude modulation (QAM) is an excellent modulation format for realizing optical communication systems with a high spectral efficiency of much greater that 1 bit/s/Hz. I describe recent progress on 1 Gsymbol/s, FDM (frequency division multiplexed)-QAM coherent transmission experiments by using heterodyne detection with a frequency-stabilized laser and an optical phase-locked loop technique.

Keywords

frequency division multiplexing; heterodyne detection; optical fibre networks; optical phase locked loops; quadrature amplitude modulation; FDM-QAM coherent transmission; frequency division multiplexing; frequency-stabilized laser; heterodyne detection; optical communication systems; optical phase-locked loop technique; quadrature amplitude modulation; ultrahigh spectral efficiency; Frequency division multiplexing; High speed optical techniques; Optical fiber cables; Optical fiber communication; Optical mixing; Optical modulation; Optical solitons; Phase locked loops; Phase shift keying; Quadrature amplitude modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Communication, 2008. ECOC 2008. 34th European Conference on

Conference_Location

Brussels

Print_ISBN

978-1-4244-2227-2

Electronic_ISBN

978-1-4244-2228-9

Type

conf

DOI

10.1109/ECOC.2008.4729095

Filename

4729095