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2020-06-19
Maeda, Hideki, Kawahara, Hiroki, Saito, Kohei, Seki, Takeshi, Kani, Junichi.  2019.  Performance Degradation of SD-FEC Due to XPM Phase Noise in WDM Transmission System with Low-Speed Optical Supervisory Channel. 2019 IEEE Photonics Conference (IPC). :1—2.

An experiment and numerical simulations analyze low-speed OSC derived XPM-induced phase noise penalty in 100-Gbps WDM systems. WDM transmission performance exhibits signal bit-pattern dependence on OSC, which is due to deterioration in SD-FEC performance.

Tanizawa, Ken, Futami, Fumio.  2019.  Digital Coherent 20-Gbit/s DP-PSK Y-00 Quantum Stream Cipher Transmission over 800-km SSMF. 2019 Optical Fiber Communications Conference and Exhibition (OFC). :1—3.

We demonstrate secure fiber-optic transmission utilizing quantum-noise signal masking by 217-level random phase modulation. Masking of 157 signal phase levels at a BER of HD-FEC threshold is achieved without significant impacts on the transmission performance.