Patent ID: 7319801

Claim:
A chromatic dispersion compensation method for an optical transmission system which includes a transmitter for transmitting an optical signal, a receiver for receiving the optical signal, and a transmission line for interconnecting said transmitter and said receiver through at least one repeater and wherein a respective dispersion compensation section for compensating for a chromatic dispersion of said transmission line is provided in any of said transmitter, repeaters of said at least one repeater and said receiver, the method comprising: determining a number of repeaters of said at least one repeater; calculating a value to be set as a sum total of residual dispersion amounts remaining after dispersion compensation by each provided dispersion compensation section or as the sum total of absolute values of the residual dispersion amounts in response to the determined number of repeaters by arithmetically operating a linear function, wherein a product of the number of repeaters and a chromatic dispersion coefficient is used as a variable to calculate; and determining a dispersion compensation amount by each provided dispersion compensation section based on the calculated value to be set as the sum total of residual dispersion amounts or as the sum total of absolute values of the residual dispersion amounts.