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We demonstrate real-time reception of a 110-Gb/s multi-band OFDM signal after transmission of 600-km SSMF fiber and 400-ps differential-group-delay. The performance of 110-Gb/s CO-OFDM signal is characterized by measuring the individual sub-band at 3.33 Gb/s.
The first 107 Gbit/s coherent optical OFDM transmission over optically non-repeated and repeated multimode fibre link is experimentally demonstrated. A record performance of 10 Tb/s-km over multimode fibre has been achieved using centre launching and OFDM equalisation.
Trellis-coded modulation coherent optical OFDM transmission at 1 Tbit/s is experimentally demonstrated. The required OSNR for the 1 Tbit/s signal can be improved by 2.6/dB at BER of 10-3.
We show 107 Gb/s CO-OFDM transmission over 1000-km SSMF fiber without optical-dispersion compensation and without Raman amplification. Orthogonal-band-multiplexed-OFDM is proposed to achieve high-speed and high spectral efficiency transmission without requiring extremely high DAC/ADC sampling rate.
We experimentally demonstrate optical performance monitoring through optical channel estimation in coherent optical OFDM systems without the need for separate monitoring devices. The monitoring results of OSNR, Q-factor, fiber chromatic dispersion, and PMD are presented.
We experimentally demonstrate transmission of coherent optical 2times2 multiple-input multiple-output orthogonal-frequency-division-multiplexing (MIMO-OFDM) with high electrical bandwidth-efficiency. The critical issues of I/Q imbalance for direct down-conversion are also investigated.
A novel compact high performance wavelength switch module enables arbitrary routing of 64 DWDM 100 Hz channels from one input into four output ports. 3.5 dB insertion loss, 50 GHz net pass and stop band and 5 W power consumption are obtained
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