Optical /spl pi//2-DPSK and its tolerance to filtering and polarization-mode dispersion

Author

Wei, X. ; Gnauck, A.H. ; Gill, D.M. ; Liu, X. ; Koc, U.-V. ; Chandrasekhar, S. ; Raybon, G. ; Leuthold, J.

Author_Institution

Bell Labs., Murray Hill, NJ, USA

Volume

15

Issue

11

fYear

2003

Firstpage

1639

Lastpage

1641

Abstract

Optical /spl pi//2 differential phase-shift keying (/spl pi//2-DPSK) is a modulation technique which encodes the binary information in relative phase shifts of /spl pi//2 and -/spl pi//2 between adjacent optical pulses. Here, we experimentally demonstrate /spl pi//2-DPSK at the bit rate of 42.7 Gb/s. It is found that /spl pi//2-DPSK outperforms conventional DPSK in the presence of strong optical filtering and polarization-mode dispersion (PMD).

Keywords

differential phase shift keying; optical fibre communication; optical fibre dispersion; optical fibre filters; 42.7 Gbit/s; LiNbO/sub 3/ Mach-Zehnder modulators; adjacent optical pulses; binary information encoding; eye diagrams; modulation technique; optical /spl pi//2-DPSK; polarization-mode dispersion; relative phase shifts; strong optical filtering; Bit rate; Differential phase shift keying; Differential quadrature phase shift keying; Filtering; Optical filters; Optical modulation; Optical pulses; Phase modulation; Polarization mode dispersion; Pulse modulation;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2003.818661

Filename

1237614