Patent ID: 9172475
Filing Date: 2015-10-27
Classification: H04B,H04J,H04Q

Abstract:
1. A method for equalizing link performance, the method comprising: obtaining link information of any optical multiplexing section in an optical wavelength division multiplexing system, and calculating an input power of each wavelength of each optical amplifier in the any optical multiplexing section according to the link information of the any optical multiplexing section; calculating an optical signal to noise ratio degradation amount of each wavelength according to the input power of each wavelength of each optical amplifier in the any optical multiplexing section; when a difference between optical signal to noise ratio degradation amounts of wavelengths is within a preset threshold range, calculating an output power of each wavelength of a last optical amplifier in the any optical multiplexing section, and when a difference between output power of wavelengths in the last optical amplifier of the any optical multiplexing section is within a preset threshold range, using the input power of each wavelength of a first optical amplifier and the output power of each wavelength of the last optical amplifier in the any optical multiplexing section as a target input power and a target output power in the any optical multiplexing section; calculating target input power and target output power of each wavelength in a next optical multiplexing section of the any optical multiplexing section by using a same method for calculating the target input power and the target output power of each wavelength in the any optical multiplexing section; and determining single wave attenuation of each wavelength caused by a power adjusting point between the any optical multiplexing section and the next optical multiplexing section according to the target output power of each wavelength in the any optical multiplexing section and the target input power of each wavelength in the next optical multiplexing section.