| 摘要 |
An OPC generates a pump light having the wavelength lambds with a power larger than a threshold for generating a nonlinear effect in an optical fiber for a main signal having the wavelengths lambd1 through lambd4 transmitted from an OS, and wavelength-multiplexes the generated light with the main signal. When the pump light induces a nonlinear effect, a signal light having the wavelengths lambd1' through lambd4' is generated symmetrically to a main signal having the wavelength lambd1 through lambd4 about the pump light on a wavelength axis. Thus, in a wavelength multiplexing system designed based on an eight-wave transmission, a signal light can function as a compensation light even when only four waves are used at the initialization of the system, thereby compensating for the characteristics of the system operations. Furthermore, the system is effective in cost because it simply requires an OPC for generating a pump light regardless of the number of compensation lights to be generated.
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