1 January 2007 Grating-based 40-Gbit/s optical code-division multiplexing system incorporating a nonlinear amplifying loop mirror
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Abstract
A seven-chip, 280-Gchip/s OCDM system incorporating quaternary phase coding and decoding is experimentally demonstrated. The encoder and decoder, consisting of superstructured fiber Bragg gratings, are fabricated using the equivalent-phase-shift method; only ordinary phase masks and submicrometer precision in control are required. Interchannel interference noise is also considered and evaluated; 40-Gbit/s×2-channel multiplexing is demonstrated. In addition, a nonlinear amplifying loop mirror (NALM) within the receiver is introduced to improve the system performance under two-channel operation. Switching is obtained for peak signal power less than 10 mW. We show that the NALM can act as a nonlinear processing element capable of reducing both the pedestal associated with conventional matched filtering and the width of the associated code recognition pulse.
© (2007) Society of Photo-Optical Instrumentation Engineers (SPIE)
Xiaogang Chen, Xiaogang Chen, Dexiu Huang, Dexiu Huang, Xiuhua Yuan, Xiuhua Yuan, Ge Xia, Ge Xia, } "Grating-based 40-Gbit/s optical code-division multiplexing system incorporating a nonlinear amplifying loop mirror," Optical Engineering 46(1), 015006 (1 January 2007). https://doi.org/10.1117/1.2424917 . Submission:
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