| 摘要 |
PURPOSE:To realize the light signal transmission method for economical long- distance transmission with high quality from multi-points in the light signal transmission method transmitting light signals from multiple points. CONSTITUTION:A plurality of light signal switching amplifiers 101 to 10n inputting a light signal with the wavelength lambda1 from a first input terminal T1 to a light transmission line 300, operating as a light amplifier and outputting the light signal with the wavelength lambda1 when inputting the light signal with the wavelength lambda2 from a second input terminal T2 to stop the input of the light signal from the first input terminal T1, and operating as light switching devices passing light signal with the wavelength lambda1 when inputting the light signal with the wavelength lambda1 from the second input terminal T2. They transmit light signals with the wavelength lambda1 from a given light signal switching amplifier 10i when the light signal is transmitted from a light signal switching amplifier 10i, and the light signal with the wavelength lambda2 is inputted from the second input terminal T2 on a light signal switching amplifier 100 in the same way. |
