Communication recovering system for wavelength division multiplexed passive optical network

摘要: A communication recovering system for a wavelength division multiplexed passive optical network (WDM PON). The can recover fault of fibers between the central office and remote nodes without additional by grouping two employing an AWG having periodic transmission characteristics, also simply rapidly such with minimal loss using 2×N structure On-Off switch, although protection are additionally installed therein. local units, 1:N manner, 2×2 switches, which to each reserved transmitter receiver, transceiver. has advantages in that it simplify structure, be cost-effectively implemented, reduce loss, perform fiber fault.