Optical signal level adjustment system, information analysis/control signal generation apparatus in the same system, and information analysis/control signal generation method

A terminal station device comprising:

• a device for detecting optical signal connection or optical signal disconnection per wavelength block of each output;
• a device for obtaining a fault pattern representing optical signal connection or optical signal disconnection at each wavelength block of each input of each terminal station device;
• a device for obtaining one or more combinations corresponding to the fault pattern, each of said combinations representing a place where adjustment of transmission dummy light is required, and including a wavelength block, and a terminal station device as items for identifying the place;
• a device for obtaining a dummy light adjustment amount for each of said combinations, said dummy light adjustment amount corresponding to the fault pattern;
• a device for transmitting, to the terminal station device, which is included in each of said combinations, a control signal for adjusting the intensity of the dummy light in the wavelength block, which is included in each of said combinations, at an output by the dummy light adjustment amount for each of said combinations;
• and
• a dummy light generation/adjustment section for generating dummy light whose intensity has been adjusted in the wavelength block at the output included in the combination by the dummy light adjustment amount according to the control signal.

A terminal station device comprising:

• a device for detecting optical signal connection or optical signal disconnection per wave length block of each output;
• a device for obtaining a fault pattern representing optical signal connection or optical signal disconnection at each wavelength block of each input of each terminal station device;
• a device for obtaining one or more combinations corresponding to the fault pattern, each of said combinations representing a place where adjustment of transmission dummy light is required, and including a wavelength block, and a terminal station device as items for identifying the place;
• a device for obtaining a dummy light adjustment amount for each of said combinations, said dummy light adjustment amount corresponding to the fault pattern;
• and
• a dummy light generation/adjustment section for generating dummy light whose intensity has been adjusted in the wavelength block at the output included in the combination by the dummy light adjustment amount according to a control signal which is sent from an information analysis/control signal generation apparatus for transmitting, to the terminal station device, which is included in each of said combinations, the control signal for adjusting the intensity of the dummy light in the wavelength block, which is included in each of said combinations, at an output by the dummy light adjustment amount for each of said combinations.

An information analysis/control signal generation apparatus comprising:

• a device for obtaining a fault pattern representing optical signal connection or optical signal disconnection at each wavelength block of each input of each terminal station device;
• a device for obtaining one or more combinations corresponding to the fault pattern, each of said combinations representing a place where adjustment of transmission dummy light is required, and including a wavelength block, and a terminal station device as items for identifying the place;
• a device for obtaining a dummy light adjustment amount for each of said combinations, said dummy light adjustment amount corresponding to the fault pattern;
• and
• a device for transmitting, to the terminal station device, which is included in each of said combinations, a control signal for adjusting the intensity of the dummy light in the wavelength block, which is included in each of said combinations, at an output by the dummy light adjustment amount for each of said combinations.