OPTICAL WAVEGUIDE DEVICE FOR SUPERVISING MANY CHANNELS

摘要

PURPOSE: An optical waveguide device for supervising many channels is provided to reduce the size of a device more than an existing an arrayed waveguide grating(AWG) by dividing the AWG output waveguide into two and manufacturing the device. CONSTITUTION: An optical waveguide device for supervising many channels has a divided structure of the output waveguide of AWG. The direction of the signal optical wave is calculated and supervised from the quantity, on which the output ratio calculated through a logarithmic amplifier increases and decreases more than one. The wave error by the change of temperature is calculated and corrected by the temperature control circuit by dividing a channel with the basic optical power for controlling temperature of the divided output waveguide. An optical signal to noise ratio is calculated by adding an amplified spontaneous emission port in the output waveguide of AWG.