Remote signal transmission system based on optical fiber

Abstract

The present invention discloses a remote signal transmission system based on an optical fiber, and mainly relates to optical communication. The system comprises an optical fiber, a laser, a signal source, an arbitrary waveform generator, a first electrooptic modulator, a circulator, a second electrooptic modulator, a pump light source, a signal transmission optical fiber, an erbium-doped fiber amplifier, a photoelectric detector, a data collection card and a computer. The signal source controls the first electrooptic modulator through the arbitrary waveform generator to load electric signals to be transmitted on a laser, and the arbitrary waveform generator modulates the pump amplification light frequency of the pump light source and the emergent light frequency of the first electrooptic modulator to one Brillouin frequency shift so as to realize Brillouin amplification of the emergent light of the first electrooptic modulator. The amplification mechanism is high in gain coefficient, high in pump efficiency and low in required pump efficiency.

Description

technical field [0001] The invention relates to optical communication, in particular to an optical fiber-based remote signal transmission system. Background technique [0002] Standing out from optical communication, optical fiber communication technology has become one of the main pillars of modern communication and plays a pivotal role in modern telecommunication networks. As an emerging technology, optical fiber communication has been developing rapidly and widely used in recent years, which is rare in the history of communication. It is also an important symbol of the world's new technology revolution and the main transmission tool for various information in the future information society. [0003] However, in the current optical fiber communication system, Raman amplification is generally used for optical signal amplification. Due to the low gain coefficient of Raman amplification, low pumping efficiency, and high pumping power, the optical fiber connector and optoelect...

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Problems solved by technology

[0003] However, in the current optical fiber communication system, Raman amplification is generally used for optical signal amplification. Due to the low gain coefficient of Raman amplification, low pumping efficiency, and high pumping power, the optical fiber connector and optoelectronic devices are easily burned out, and the cost is expensive. , in summary, it is not suitable for LAN optical fiber communication or small-scale optical fiber communication system

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