Abstract
Abstract. A seven-chip, 280-Gchip/s OCDM system incorporating qua-ternary phase coding and decoding is experimentally demonstrated. Theencoder and decoder, consisting of superstructured fiber Bragg gratings,are fabricated using the equivalent-phase-shift method; only ordinaryphase masks and submicrometer precision in control are required. Inter-channel interference noise is also considered and evaluated; 40-Gbit/s2-channel multiplexing is demonstrated. In addition, a nonlinear ampli-fying loop mirror NALM within the receiver is introduced to improve thesystem performance under two-channel operation. Switching is obtainedfor peak signal power less than 10 mW. We show that the NALM can actas a nonlinear processing element capable of reducing both the pedestalassociated with conventional matched filtering and the width of the as-sociated code recognition pulse. © 2007 Society of Photo-Optical InstrumentationEngineers. DOI: 10.1117/1.2424917 Subject terms: optical code-division multiplexing; superstructured fiber Bragggrating SSFBG ; all-optical encoding and decoding; equivalent phase shift; non-linear amplifying loop mirror .NALMPaper 060430R received Jun. 6, 2006; revised manuscript received Jul. 18, 2006;accepted for publication Jul. 20, 2006; published online Jan. 5, 2007.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
