Optical fiber transmission method and device

Abstract

The invention provides an optical fiber transmission method and an optical fiber transmission device. The method comprises the steps of detecting corresponding current optical power after an initial optical signal is amplified, judging whether the current optical power meets a triggering condition, when the triggering condition is met, judging whether a current gain corresponding to the current optical power is within an optimal gain range, if the current gain is within the optical gain range, after attenuating the current optical power to standard optical power, outputting an optical signal corresponding to the standard optical power, wherein the standard optical power is a standard value of the initial power after being amplified by a preset gain. Therefore, an optical power value and the gain of the optical signal in optical fiber transmission can be controlled in real time, so as to be adjusted to the best optical power value and gain, stable transmission and low noise are achieved, and at last, the amplified optical signal is attenuated, so that the user requirement on the gain value of the optical signal is met, and an output result is controllable.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and device for optical fiber transmission. Background technique [0002] With the advancement of society, the application of optical fiber communication technology has grown rapidly. Since the first commercial installation of the optical fiber system in 1977, telephone companies have begun to use optical fiber links to replace the old copper wire system. Optical fiber transmission, that is, data and signal transmission using optical fiber as the medium. Optical fibers can not only be used to transmit analog and digital signals, but also meet the needs of video transmission. Optical fiber is a very convenient tool for signal transmission. A slender optical core in the cable can replace more than a thousand physical communication lines to complete a large number of long-distance communication tasks. [0003] Although optical fiber transmission has the advantages of...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for optical fiber transmission, which solves the problem that in optical fiber transmission, the gain of the optical power for amplifying the optical signal can only be preset, and cannot be adjusted in real time, resulting in uncontrollable noise during optical signal transmission and inconsistent output. stability problem

Images