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We have experimentally demonstrated symmetric 40Gb/s TWDM-PON with long passive reach and high power budget. Directly-modulated lasers (DMLs) are used as both downstream and upstream lasers to reduce the system cost, and optical reshaping filter is used to manage the chirp of the DMLs for all the upstream and downstream channels, enabling long distance transmission without dispersion compensation...
We demonstrate a symmetric 40-Gb/s TWDM-PON system using a single tunable optical filter for both downstream wavelength selection and chirp management of upstream directly modulated laser, which supports 25-km feeder fiber and 1:256 splitting ratio.
This paper proposes a novel multi-wavelength time division multiplexing passive optical network (TDM-PON) configuration using a single tunable optical filter (TOF) for both downstream wavelength selection and upstream wavelength generation. The network architecture is completely compatible with the existing optical distribution network and can also mitigate Rayleigh backscattering and back reflection...
An efficient scheduling algorithm has been proposed for upstream bandwidth allocation in OFDMA PON systems to support differentiated services. Simulation result illustrates that the proposed algorithm obtains high throughput performance and channel utility.
We proposed a Upstream Multi-Wavelength Shared PON using a tunable self-seeding FP-LD at ONU. The fiber laser performances are experimentally investigated. The paper also for the first time studies the effect of channel switch latency on the DBA with the IPACT scheme.
This paper investigates the “Blind Zone” of electronic packet header processing in the core routers of asynchronous optical packet switching network. Simulation shows that the “Blind Zone” has significant impact on packet loss which is also influenced by the arrival interval and the packet length.
We demonstrate a novel PON scheme enabling optical VPN functionality using DPSK/IM format. DPSK is used for downstream and upstream traffic, while IM is superimposed on the DPSK signal for VPN traffic.
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