Zhaowen Xu

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We propose a novel scheme to realize multicast based on our previously reported carrier-reuse WDM-PON architecture. The subcarriers are employed to transmit the downlink point-to-point (unicast) data, whereas the carriers of the downlink subcarrier modulated lights are reused by the reflective semiconductor optical amplifiers at each optical network unit(More)
We propose a new WDM-PON architecture using Fabry-Pérot laser diodes (FP-LDs) that are injection-locked by continuous wave (CW) seed light. The modulation characteristics of the CW light injection-locked FP-LD are first investigated. Both uplink and downlink transmissions at 10 Gb/s are experimentally demonstrated using the proposed CW injection-locked(More)
Hybrid WDM–TDM PON (wavelength division multiplexing–time division multiplexing passive optical network) that applies wavelength-independent or colorless ONU (optical network unit) technologies will further reduce implementation and maintenance expenses. The “wavelength-reuse” colorless ONU technology imposes a physical constraint in the hybrid WDM–TDM PON(More)
We propose a novel hybrid wavelength-division-multiplexed (WDM)/ time-division-multiplexed (TDM) passive optical network (PON) architecture for next-generation optical access networks. This PON is based on a novel virtual PON (VPON) mechanism that will allow wavelength channels to be flexibly allocated to specific ONUs in a dynamic fashion. Dynamic(More)
The capacity of today’s top-end core routers is only about 1Tb/s. If the router capacity were to continue to grow at the same rate as the past 20 years, we would need 100Tb/s routers by 2012. The two major projects that aim to design plain 100Tb/s packet routers are LASOR and IRIS. In our project, we aim to design a multicast capable 100Tb/s packet(More)
We propose an optical labeling scheme whereby the optical label and payload are transmitted separately on two different fibers that carry bidirectional traffic. This eliminates the complex optical label and payload separation and combination processes which are usually required at the intermediate optical switching nodes. Another novel feature of our(More)