Distributed self-adaptive optical system based on optical fibers

Abstract

The invention provides a distributed self-adaptive optical system based on optical fibers. The distributed self-adaptive optical system based on the optical fibers comprises an emitting laser, an optical fiber beam splitter, an optical fiber phase modulator, an optical fiber laser amplifier, a photoelectric detector, a three-port optical fiber circulator, a self-adaptive optical fiber collimator and coupler array, an integrated device, a multi-channel high-voltage amplifier, a wavefront controller as well as a beacon light source, a spectroscope and a far field target. The distributed self-adaptive optical system is based on the fiber laser technology in combination with a plurality of optical fiber devices, and is characterized in that a beacon light beam is divided by use of the self-adaptive optical fiber collimator and coupler array, the wavefront error of beacon light is measured in real time and the error is decomposed to each light sub-beam in a laser array, a piston for emitting the light sub-beams and a tilting phase are controlled independently and in parallel according to the principle of phase conjugation, and the influence of atmospheric turbulence effect on the quality of the light beam at the far field target is relieved. The distributed self-adaptive optical system based on the optical fibers has important application prospects in the fields such as laser atmospheric transmission, free space laser communication and laser radar.

Description

technical field [0001] The invention relates to a distributed adaptive optical system based on optical fiber laser and optical fiber devices, belonging to the technical field of optical engineering. It has important application prospects in the fields of laser atmospheric transmission, free space laser communication, and laser radar. Background technique [0002] Adaptive optics technology can be used to improve the imaging resolution of the imaging optical system and the beam quality of the laser transmission system. There are examples of successfully improving system performance in application systems such as astronomical observation, laser atmospheric transmission, and wireless laser communication. The traditional adaptive optics system usually consists of a wavefront sensor, a wavefront controller and a wavefront corrector. The wavefront sensor is used to detect the slope or curvature information of the wavefront. The algorithm restores the overall wavefront, and accord...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: to overcome the shortcomings of the traditional adaptive optical system applied to the fiber laser array coherent combination system, and to overcome the problem of limited control bandwidth when using the non-wavefront sensor optimization control method to correct the influence of atmospheric turbulence. A Novel Distributed Adaptive Optics System That Can Detect Wavefront Information in Real Time and Compensate for Atmospheric Turbulence

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