Simultaneous Polarization-Insensitive Wavelength Conversion of 80-Gb/s RZ-DQPSK Signal and 40-Gb/s RZ-OOK Signal in a Ti:PPLN Waveguide

Hao Hu, Rahman Nouroozi, Reinhold Ludwig, Bernd Huettl, Carsten Schmidt-Langhorst, Hubertus Suche, Wolfgang Sohler, Colja Schubert

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Simultaneous all-optical wavelength conversion of an 80-Gb/s return-to-zero differential quadrature phase shift keying (RZ-DQPSK) data signal and a 40-Gb/s return-to-zero ON--OFF keying (RZ-OOK) data signal using a Ti:PPLN waveguide in a polarization-diversity loop configuration are demonstrated. The wavelength conversion is fully transparent to polarization, data rate, modulation format, and modulation level. The conversion efficiency for the signals was -21 dB, which includes 9.2-dB passive losses in the whole Ti:PPLN subsystem. Error-free performance for both wavelength-converted signals was achieved for polarization-scrambled input data signals without additional penalty caused by the polarization scrambling.
Original languageEnglish
JournalJournal of Lightwave Technology
Volume29
Issue number8
Pages (from-to)1092-1097
ISSN0733-8724
DOIs
Publication statusPublished - 2011
Externally publishedYes

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