MONITORING AND CONTROL SYSTEM

PROBLEM TO BE SOLVED: To allow monitoring and control in a monitoring point, based on a measured result, by simple constitution. SOLUTION: This monitoring and control system is provided with an OTDR 5 for emitting a light pulse, the first and second laser diodes 6a, 6b for emitting different wavelengths λ1, λ2 of signal lights, a photomultiplexing part 8 for multiplexing the pulse light and the respective signal lights to be propagated to an optical fiber 3 of a main line, and the first and second monitors 2a, 2b provided in the optical fiber 3, the respective monitors 2a, 2b are provided with luminous energy branching parts 9a, 9b and wavelength demultiplexing parts 10a, 10b provided in the optical fiber 3, the first and second sensors 11a, 11b connected to the luminous energy branching parts, and the first and second displays 14a, 14b connected to the wavelength demultiplexing parts, the wavelength λ1 of signal light corresponds to the first display 14a, and the wavelength λ2 of signal light corresponds to the second display 14b. COPYRIGHT: (C)2008,JPO&INPIT