WAVELENGTH MULTIPLEX APPARATUS, OPTICAL TRANSMISSION DEVICE, AND WAVELENGTH MULTIPLEX METHOD
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United States of America Patent
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Sep 3, 2015
app pub date -
Feb 3, 2015
filing date -
Feb 28, 2014
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Abstract
A wavelength multiplex apparatus includes TRPNs that output optical signals, VOAs that are provided in the TRPNs and regulate output levels of the signals from the TRPNs, a first CPL that multiplexes the regulated signals, an 0CM that detects the output levels of the multiplexed signals by the unit of wavelength, and a first control unit that, when an added signal is detected, controls a VOA for added signals so that an interference error with other signals is not caused and an output level of an signal falls within a detection range of output levels detectable in the OCM. The apparatus includes a monitoring unit that determines whether or not an output level of a set wavelength of the added signal is not less than a detection threshold within the range and a second control unit that controls the VOA for added signals on the basis of a determination result.
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