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In summary, we have proposed and demonstrated the feasibility of a 60-km extendedreach PON system for broadband access in rural areas using a dual-fibre architecture. In the proposed system, each subscriber is serviced by two fibres with symmetric upstream and downstream traffic at a data rate up to 2.5 Gb/s at 1550 nm. The proposed scheme uses purely passive components in the filed, while providing...
We demonstrate a new extended-reach GPON for rural areas using distributed Raman amplification and an SOA. Symmetric 2.5-Gb/s bidirectional transmission is achieved for 32 subscribers over 60-km reach, without using an active extender.
A new extended-reach GPON for rural areas using distributed Raman amplifiers is proposed and demonstrated. Symmetric 2.5-Gb/s bidirectional transmission is achieved for 32 subscribers over 60-km reach, without using any active extender.
We investigate the economics of rural broadband access technologies based on actual geographic information. For low bit-rates and low population density, wireless is the cheapest. For bit-rates exceeding 20 Mbit/s, PON is the lowest-cost technology.
We model and compare the deployment costs of three broadband access technologies, namely digital subscriber loops (DSL), passive optical networks (PON), and WiMAX wireless access, in Australian rural and remote areas. The analysis shows that wireless technologies are cheapest for a 20 Mbit/s rate when the number of homes per square kilometer is less than one. For 50+ Mbit/s, passive optical networks...
This paper examines the properties of optical resonator memory cells, in which a data bit is stored in a high- optical resonator. It is shown that resonator-based optical memories are ultimately limited by losses in the resonators, by the extinction ratio and chirp of the variable coupling medium that injects and extracts data into and out of the resonators, and by chirp on the input signal. Using...
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