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We have successfully demonstrated 3 × 458-Gbit/s Optical Multi-band OFDM transmission over 160 km of SSMF with EDFA-only amplification at 50 GHz WDM spacing by utilizing narrowband optical filter.
In this paper, we propose and experimentally demonstrate the direct-detection optical orthogonal-frequency-division-multiplexing superchannel (DDO-OFDM-S) and optical multiband receiving method (OMBR) to support -Gb/s data rate and a longer distance for direct-detection systems. For the new OMBR, we discuss the optimum carrier-to-sideband power ratio (CSPR) both in the cases of back-to-back...
Optical OFDM is one of promising technologies to increase a spectral efficiency. We demonstrated WDM transmission experiments of 458 Gbit/s OFDM signal per WDM channel with 8 bit/s/Hz spectral efficiency.
We will review our recent works on the transmission of a high-speed (> 100Gb/s) direct-detection optical OFDM super-channel (DDO-OFDM-S) over the dispersion-unmanaged standard-single-mode-fiber (SSMF) link.
We have demonstrated an efficient scattered pilot channel tracking approach with a new polar-based intra-symbol frequency domain average (ISFA) for 16-QAM, 40-Gb/s PDM-CO-OFDM systems. This proposal could promise an relatively stable performance even under an rapidly time-varying environment.
We have demonstrated 7 × 463-Gbit/s Optical OFDM transmission over 960 km of SSMF with EDFA-only amplification at 100-GHz WDM spacing. It is confirmed that the intra-channel penalty is dominant compared to inter-channel penalty.
We will review the transmission and signal processing techniques (phase noise & IQ imbalance compensation) of our previously-proposed direct-detection optical OFDM super-channel (DDO-OFDM-S) over dispersion-unmanaged standard single mode fiber (SSMF) link.
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