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We propose a bitrate flexible optical transceiver scheme for software-defined optical access networks by means of half-cycle subcarrier M-QAM using intensity modulation and direct detection. Here, the transceivers can successfully generate four different modulation formats at 20, 40, 50, 60 Gb/s using MATLAB program and receive without changing the hardware platform. Simulation results show that the...
We propose a channel-reuse, long-reach WDM-PON scheme and an optical beat noise-based automatic wavelength management method. A 40 km reach, channel-reuse, 40 Gb/s/λ downstream and 10 Gb/s/λ upstream signal transmission on a 100 GHz WDM grid is demonstrated.
We propose a remotely pumped EDFA and tunable transmitter-based 40-Gb/s/λ downstream and 10-Gb/s/λ upstream transmissions long-reach WDM-PON scheme and an optical beat noise-based novel automatic wavelength control method for tunable transmitter. Transmissions of 40-Gb/s DQPSK downstream using MZ Modulator and 10-Gb/s OOK upstream using optical beat noise-based self wavelength managed tunable transmitter...
We propose a wavelength-reuse bidirectional 10-Gb/s/l long-reach WDM-PON scheme and a novel automatic wavelength control method for tunable laser-based colorless ONU. Transmissions of wavelength-reuse bidirectional 10-Gb/s OOK are demonstrated with 60-km fiber transmission and 50-GHz channel spacing.
We propose a bidirectional 40-Gb/s/X long-reach WDM-PON scheme and a novel automatic wavelength control method for tunable laser-based colorless ONU. Transmissions of 40-Gb/s DQPSK downstream and upstream are demonstrated with 40-km fiber transmission.
A novel ring-tree TWDM optical access network architecture using matrix optical switch and OEO wavelength converter is proposed. The architecture owns flexible on-demand wavelength and timeslot provision, OLT energy saving ability and backward compatibility.
Proposed in this paper is a 10-Gbps uplink transmission over 25-km fiber in WDM-PON, in which band-limited RSOAs are applied to colorless ONUs and cascaded Mach-Zehnder Interferometers are used as three-tap optical equalizers in OLT.
A Dark-Pulse Brillouin Optical Time Domain Analyzer (BOTDA) configuration has been proposed to prolong the total sensing length by measuring both Brillouin Gain and Loss effect along fiber. The detected Brillouin signal will be identified by subtracting the two sided band of the Optical Carrier Suppressed (OCS) Stokes light. Due to the innovated configuration, the distributed Brillouin sensor developed...
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