The authors propose a novel, multifunctional approach to the problem of demultiplexing closely spaced channels sourced from an optical frequency comb. This solution, based on an externally injected laser, combines the functionality of a tunable demultiplexer, an ultra-low noise amplifier and a modulator, using a single device. Such a device can serve as an optimum transceiver for next generation broadband access (wired and wireless) networks.
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