Passive mode-locking fiber laser delay feedback chaotization system based on graphene

Abstract

The invention belongs to the technical field of optical communication devices and relates to a passive mode-locking fiber laser delay feedback chaotization system based on graphene, comprising a pumping laser (1), a wavelength division multiplexing fiber coupler (2), a first fiber coupler (3), a mode-locking device (9), an erbium-doped fiber (7), a polarization controller (5), an isolator (6), a second fiber coupler (4), a photodetector (10), an A/D conversion circuit (11), a single chip microcomputer (15), an RS 232 interface (16) and an optical delay line (12), wherein the optical delay line (12) receives control signals and carries out delay feedback to enable the whole system to be in a chaotization state, and the mode-locking device (9) is a graphene mode-locking device. The invention can generate a femto-second order optical pulse without an external modulation source, has the advantages of easy synchronization, high output pulse peak power, easy installation and operation and simple structure, and the like and can realize all-fiber integration and create the foundation of realizing chaotization synchronization and secrete communication.

Description

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AI Technical Summary

Benefits of technology

In this patented technology, there are several technical features related to generating short optically pulsed signals through a special type called a quantum dots crystal. These techniques allow for precise timing and generation of longer opticacons without requiring extra components like electromodulated devices at any cost. Additionally, they use advanced materials such as carbon nanotubbles instead of traditional semiconductor elements which make up these systems more reliable but less efficient than other alternatives. Overall, their advantages include improved efficiency, reliability, safety, and ease of implementation across different industries while being suitable for various applications where security needs to be provided over long distances.

Problems solved by technology

Technological Problem: Current Optically Stabilized LC Laser System uses quantum dots instead of traditional stabilizing methods like phase locked loop techniques that require complicated manufacturing process steps. Additionally, current proposals involve using special types of fibers called CWs, including superficial ones made from plasma telecommunicated sapphire crystallites, which limits their applicability within certain fields where fast speeds and reliance were necessary.

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