Equalization-enhanced phase noise induced timing jitter |
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Authors: | Ho Keang-Po Lau Alan Pak Tao Shieh William |
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Affiliation: | SiBEAM Technologies, Sunnyvale, California 94085, USA. kpho@ieee.org |
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Abstract: | In electronic digital signal processing based optical communication systems, digital equalization for chromatic dispersion interacts with local oscillator phase noise to produce equalization-enhanced phase noise (EEPN). In addition to both phase and intensity noises, EEPN also induces timing jitter to the equalized signal. For a 100?Gbit/s quadrature-phase-shift keying signal with laser linewidth of 300?kHz, the timing jitter is up to 20% of the symbol interval for a transmission distance of 1500?km. |
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