Optical power adjusting unit, device, system and method

Abstract

The invention relates to the technical field of optical communication, and discloses an optical power adjusting unit, device, system and method. The optical power adjusting unit comprises a monitoring module, an amplifier, a communication module and a controller. The controller determines a gain tilt adjustment value according to the second power data acquired from the communication module and the first power data acquired from the monitoring module, and adjusts the gain flatness of the gain spectrum of the amplifier based on the gain tilt adjustment value, thereby adjusting the power of the light of each wavelength in the second optical signal until the power of the light of each wavelength in the third optical signal in the received second power data reaches the preset power threshold. According to the invention, not only can the power of the optical signal be balanced quickly and accurately for the multi-wave transmission system, but also the gain flatness of the gain spectrum can be changed along with the change of the transmission link environment, so that the performance of the receiving end is always in an optimal state.

Description

technical field [0001] The present invention relates to the technical field of optical communication, in particular to an optical power adjustment unit, device, system and method. Background technique [0002] Wavelength division multiplexing technology is a communication technology that combines a series of optical signals carrying information but with different wavelengths into one beam for transmission. It is one of the most core and widely used technologies in modern communication. Since the wavelength division multiplexing technology is to combine different wavelengths of light into one beam for transmission, and the loss coefficients of different wavelengths of light transmitted in the optical fiber are different, and the short-wavelength energy will be transferred to the long-wavelength under the action of stimulated Raman scattering, which makes The loss of different wavelengths of light transmitted in the optical fiber is different, resulting in a large difference b...

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Problems solved by technology

[0003] The inventors found that the power balance of optical signals in multi-wavelength optical signal transmission is generally achieved by adjusting the gain tilt adjustment value of the fiber amplifier. The gain of the amplifier, this method not only has low efficiency and poor accuracy, but also cannot change with the change of the transmission link environment

[0004] In view of the deficiencies in the above-mentioned prior art, the present invention provides an optical power adjustment unit, device, system and method, which can solve the technical problem of low gain efficiency and poor precision in adjusting the gain efficiency of the optical fiber amplifier in the prior art

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