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Noise-like pulse generator

A noise pulse and generator technology, applied in the field of noise-like pulse generators, can solve the problems of low pulse peak power and disadvantage, and achieve the effects of reducing loss, facilitating welding, and simple and reliable equipment.

Inactive Publication Date: 2016-09-28
湖州新纳贝通光电技术有限公司
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AI Technical Summary

Problems solved by technology

However, in a fully positive dispersion fiber laser, the pulse is continuously broadened, so the peak power of the pulse is relatively low, which is not conducive to the generation of broadband "noise-like" pulses

Method used

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] Such as figure 1 As shown, the embodiment of the present invention includes a pump source 1 and an optical fiber ring cavity 2, and the fiber ring cavity 2 includes a wavelength division multiplexer 201, a doped optical fiber 202, and an optical isolator that are sequentially connected with a single-mode optical fiber and form a closed-loop structure. 203, polarizer 204, polarization controller 205 and fiber optic coupler 206, pumping source 1 is connected with the pumping port of wavelength division multiplexer 201, fiber optic coupler 206 includes loop output port 2061, target output port 2062 and Input port 2063, the common port of input port 2063 and wavelength division multiplexer 201 is connected through the connection loop segment that forms by doped optical fiber 202, optical isolator 203, polarizer 204 and polarization controller 205 successiv...

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Abstract

A kind of noise pulse generator, the optical fiber ring cavity includes a wavelength division multiplexer, a doped optical fiber, an optical isolator, a polarizer, a polarization controller and a fiber coupler connected in sequence with optical fibers to form a closed-loop structure, and a pump source Connected with the pump port of the wavelength division multiplexer, the fiber coupler includes a loop output port, a target output port and an input port, and the input port and the common port of the wavelength division multiplexer pass through a doped optical fiber, an optical isolator, The polarizer and the polarization controller are sequentially connected to form a connection loop section, the loop output port is connected to the signal port of the wavelength division multiplexer, and the target output port is used to output "noise-like" pulses. The invention adopts fiber-optic devices to build a total positive dispersion all-fiber laser, and utilizes the Raman effect of the optical fiber to generate broadband "noise-like" pulses in the total positive dispersion region.

Description

technical field [0001] The invention relates to the field of optical equipment, in particular to a kind of noise pulse generator. Background technique [0002] Compared with traditional solid-state lasers, ultrafast mode-locked fiber lasers have the advantages of good beam quality, high gain, high efficiency, low threshold, tunable, compact structure, reliable operation, and good heat dissipation. In the past 20 years, ultrafast fiber lasers have been developed rapidly and have been widely used in optical communication, optical sensing, laser medical treatment, industrial processing, aerospace, material science, spectroscopy and nonlinear optics. Ultrafast fiber lasers are one of the active areas of optical research today. [0003] The "noise-like" pulse is a special mode-locked state in passively mode-locked fiber lasers. It is actually a broad wave packet with low time-domain coherence gathered together by many randomly evolving small ultrashort pulse clusters. Correspon...

Claims

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Application Information

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IPC IPC(8): H01S3/30H01S3/067
CPCH01S3/302H01S3/06712H01S3/06791
Inventor 赵鹭明李道静
Owner 湖州新纳贝通光电技术有限公司
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