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By using a fiber optical parametric amplifier, we demonstrate a novel pre-amplification scheme to improve receiver sensitivity for 10-Gb/s non-return-to-zero on-off keying (NRZ-OOK) format with dual-end superposition of signal and idler. We achieve receiver sensitivity of −40.5 dBm, and improve by 2 dB when comparing to its single-end counterpart.
© 2009 OSA, IEEE Photonics Society, SPIE, COS, CIC
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