Cascaded SOA configuration for NRZ-OOK to RZ-QPSK format conversion
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AbstractWe propose and experimentally demonstrate an all-optical format conversion from two independent non-return-to-zero on-off keying (NRZ-OOK) signals to a return-to-zero quadrature phase shift keying (RZ-QPSK) signal using two cascaded SOAs. Within each SOA, the cross phase modulation (XPM) process is properly controlled by an assistant light. After evaluating its effect on XPM, a suitable power range of assistant light is chosen for the NRZ-OOK to RZ-QPSK format conversion. In the experiment, a RZ-QPSK signal is successfully obtained with opened demodulation eye-diagrams. © 2010 Elsevier B.V. All rights reserved.
All Author(s) ListGao Y., Shu C., He S.
Journal nameOptics Communications
Volume Number283
Issue Number23
PublisherElsevier BV
Place of PublicationNetherlands
Pages4609 - 4613
LanguagesEnglish-United Kingdom
KeywordsOptical fiber communication, Quadrature phase-shift keying (QPSK), Semiconductor optical amplifier (SOA), Wavelength-division multiplexing (WDM)

Last updated on 2021-16-01 at 01:15