Duobinary optical transmission apparatus

Disclosed is a duobinary optical transmission apparatus. The duobinary optical transmission apparatus uses the crossed phase characteristics of a duobinary signal without using a feedback-type precoder and an electric LPF, and is thereby not affected by Pseudo-Random Bit Sequence (PRBS), and is very...

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Bibliographic Details
Main Authors LEE, HAN-LIM, OH, YUN-JE, HWANG, SEONG-TAEK, KIM, SUNG-KEE
Format Patent
LanguageEnglish
French
German
Published 12.10.2005
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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Summary:Disclosed is a duobinary optical transmission apparatus. The duobinary optical transmission apparatus uses the crossed phase characteristics of a duobinary signal without using a feedback-type precoder and an electric LPF, and is thereby not affected by Pseudo-Random Bit Sequence (PRBS), and is very resistant to wavelength division characteristics. In addition to a drive amplifier, a Mach-Zehnder-interferometer-type optical intensity modulator (MZ MOD), and a laser source for generating a carrier wave, the duobinary optical transmission apparatus further includes a toggle flip-flop (T.FF) and an AND gate to separate a group of '1' from input data signal in such a way that the input data signal is modulated to make each signal have a different phase.
Bibliography:Application Number: EP20030017118