Abstract:This paper proposes an optical access system employing very high-speed digital subscriber line (VDSL) based on rate-adaptive optical sub-carrier multiplexing (RA-SCM) as a residential gateway for multi-dwelling units in fiber-to-thebuilding (FTTB). Experiments successfully demonstrate a 20 km transmission of 50 VDSL signals in bi-directional wavelength division multiplexing over a single mode fiber as a result of a new method for approximating spurious levels of M-ary QAM spectrum that are proportional to cons… Show more
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