We propose downstream transmission of 25-Gb/s and 40-Gb/s Faster-than-Nyquist signals based on NRZ and PAM4 for high-capacity PON using low-cost 10G optics, respectively achieving -23.9 dBm and -20 dBm receiver sensitivities after 20-km SSMF.

© 2015 Optical Society of America

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