OPTICAL SIGNAL LEVEL ADJUSTMENT SYSTEM, INFORMATION ANALYSIS/CONTROL SIGNAL GENERATION APPARATUS IN THE SAME SYSTEM, AND INFORMATION ANALYSIS/CONTROL SIGNAL GENERATION METHOD
First Claim
1. An optical signal level adjustment method comprising:
- obtaining a fault pattern representing optical signal connection or optical signal disconnection at each wavelength block of each input of each terminal station device;
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;
obtaining a dummy light adjustment amount for each of said combinations, said dummy light adjustment amount corresponding to the fault pattern; and
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.
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Accused Products
Abstract
The present invention enables to prevent transmission characteristics from deteriorating due to the nonlinear effect in the transmission path caused by an increase in the channel power when a cable disconnection occurs. An optical signal level adjustment method comprises the steps of: obtaining, based on one or more optical signal disconnections which are detected per wavelength block and each of which is detected by a signal disconnection detection section included in each of terminal station devices, a location at which the optical signal disconnection has occurred, a combination of a terminal station device and a wavelength block, and a dummy light adjustment amount, said combination being required to be subjected to adjustment of transmission dummy light, said combination and said dummy light adjustment amount corresponding to the location; and transmitting, to the terminal station device which is required to be subjected to adjustment of the transmission dummy light, a control signal for adjusting the intensity of the dummy light in the obtained wavelength block by the dummy light adjustment amount.
30 Citations
18 Claims
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1. An optical signal level adjustment method comprising:
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obtaining a fault pattern representing optical signal connection or optical signal disconnection at each wavelength block of each input of each terminal station device; 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; obtaining a dummy light adjustment amount for each of said combinations, said dummy light adjustment amount corresponding to the fault pattern; and 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. - View Dependent Claims (2, 3, 4, 14)
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5. A terminal station device comprising:
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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; 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. - View Dependent Claims (6, 15)
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7. A terminal station device comprising:
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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. - View Dependent Claims (8, 16)
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9. An information analysis/control signal generation apparatus comprising:
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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. - View Dependent Claims (10, 11, 12, 13, 17, 18)
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Specification