Nonlinear crosstalk and compensation in QDPASK optical communication systems

Nonlinear crosstalk in the quaternary differential-phase amplitude-shift-keying (QDPASK) modulation format is analyzed. Significant crosstalk penalty is measured on a QDPASK signal with a 20-Gb/s aggregate capacity for nonlinear phase shifts of 0.17/spl pi/ rad and above. Two different compensation...

Full description

Saved in:
Bibliographic Details
Published in:IEEE photonics technology letters 2004-08, Vol.16 (8), p.1975-1977
Main Authors: Hansryd, J., van Howe, J., Xu, C.
Format: Article
Language:English
Subjects:
Aggregates
Amplitude shift keying
Compensation
Crosstalk
Differential quadrature phase shift keying
Modulation
Noise levels
Nonlinear optics
Nonlinearity
Optical communication
Optical crosstalk
Optical fiber communication
Optical modulation
Optical receivers
Optical transmitters
Scanning probe microscopy
Tolerances
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nonlinear crosstalk in the quaternary differential-phase amplitude-shift-keying (QDPASK) modulation format is analyzed. Significant crosstalk penalty is measured on a QDPASK signal with a 20-Gb/s aggregate capacity for nonlinear phase shifts of 0.17/spl pi/ rad and above. Two different compensation techniques are demonstrated based on either prechirping or postchirping of the optical signal, increasing the nonlinear tolerance by 6.1 and 4.5 dB, respectively.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2004.831282