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In this paper, we propose a scheme using Orthogonal Frequency Division Multiplexing (OFDM) and self-coherent detection to enhance satellite-to-ground data links, with improved communication data rate and detection performance. We analyzed this free space optical communication systems theoretically, with preliminary experimental results being demonstrated. In the experiment, quadrature phase shift...
This paper demonstrates the first mode-multiplexed system over 19-cell hollow-core photonic band gap fibre, at 2×20Gbps using the LP0,1 and LP2,1-like modes.
A 70-km-reach bi-directional WDM-PON with 10-Gb/s downstream Manchester-duobinary signal and 1.25-Gb/s upstream re-modulated NRZ-OOK signals is demonstrated, with effective mitigation of Rayleigh backscattered noise.
We generate 20-Gb/s return-to-zero differential quadrature phase-shift-keying (RZ-DQPSK) signal using a directly modulated chirp managed laser (CML), without requiring any differential encoder and optical phase modulator.
We demonstrate simultaneous demodulation of multiple 40 Gbit/s WDM NRZ-DPSK channels using a single silicon microring resonator with FSR of 100 GHz. Bit error measurements show very good performances for both through and drop demodulations for all channels.
This talk will focus on the power consumption comparison between point-to-point wavelength division multiplexing (WDM) systems and optical time division multiplexing (OTDM) systems. By keeping the structure simple, the advantages and disadvantages of the WDM and OTDM techniques are highlighted from an energy efficiency point of view. Our analysis shows that in order to be comparable to WDM systems...
We propose and experimentally demonstrate a simple power efficient scheme for WDM-PON, using a LED-based monitoring signal to save the power consumption of the optical transceivers for the inactive subscribers.
We demonstrate RZ-to-NRZ format conversion at 50 Gbit/s based on silicon microring resonator with FSR of 100 GHz. Bit error rate measurements show a low power penalty compared to electrical NRZ signal for error free operation.
We propose and demonstrate optical multicast overlay on WDM-PON employing bandwidth efficient Inverse-RZ-duobinary signal. Multicast overlay control is realized by tuning the bias at the point-to-point downstream modulator at the OLT.
We demonstrate error free, low-penalty demultiplexing of a 640 Gbit/s OTDM signal to 10 Gbit/s using a 5 cm long chalcogenide planar waveguide chip. Our approach exploits four-wave mixing by the instantaneous nonlinear response of chalcogenide.
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