OPTICAL WAVELENGTH MONITOR CONTROLLER, OPTICAL WAVELENGTH MULTIPLEX OPTICAL TRANSMITTER, OPTICAL WAVELENGTH MONITOR CONTROL METHOD AND OPTICAL WAVELENGTH MULTIPLEX OPTICAL TRANSMISSION METHOD

摘要

PROBLEM TO BE SOLVED: To suppress the increase of the scale of an optical wavelength monitor controller according to the attended with increase of the wavelength of an optical signal. ;SOLUTION: The optical wavelength monitor controller that monitors the wavelength bands of a plurality of optical signals whose wavelength differs from each other is provided with optical filter means 9, 10, 11, 12, 13 with a plurality of transparent wavelength bands through which a plurality of monitor light signals branched from a plurality of optical signals pass and with a wavelength monitor means 14, 15, 17 that monitor a change in the intensity of the monitored light for every transmission of the optical filer means to obtain a wavelength shift in the optical signal.;COPYRIGHT: (C)2000,JPO