All-fiber ultrashort pulse light source capable of simultaneously generating soliton and noise-like pulse

Abstract

The invention discloses an all-fiber ultrashort pulse light source capable of simultaneously generating a soliton and a noise-like pulse and belongs to the light information technology field. A technical problem that an existing all-fiber ultrashort pulse light source is single in output pulse working state is solved. The light source comprises a first pumping source, a second pumping source, a first wavelength division multiplexer, a second wavelength division multiplexer, an erbium-doped optical fiber, a first coupler, a high nonlinear optical fiber, a second coupler, a first polarization controller, a polarization dependent isolator, an optical circulator, a reflective variable optical attenuator and a second polarization controller. In the invention, an attenuation-controllable mode locking structure and a double-coupler light splitting structure are adopted; in a same laser resonant cavity structure, a soliton pulse with stable performance and a noise-like pulse with high pulse energy can be output at the same time, practicability of the all-fiber ultrashort pulse light source is improved, cost is greatly reduced, and the all-fiber ultrashort pulse light source can be appliedto the fields of light communication, sensing, imaging, nonlinear frequency conversion and the like.

Description

technical field [0001] The invention relates to an all-fiber ultrashort pulse light source capable of simultaneously generating soliton and noise-like pulses, belonging to the technical field of optical information. Background technique [0002] Ultrashort pulse light sources refer to lasers with pulses whose time domain width is less than picoseconds. Ultrashort pulse light sources have important applications in medical, military, communication, ranging, mid-infrared light source generation and other fields, and have become the most promising development today. One of the laser technology. The use of all-fiber resonant cavity structure to generate ultrashort pulse laser has the characteristics of small size, good heat dissipation and simple manufacturing process. Therefore, all-fiber ultrashort pulse laser has high reliability and low cost, and is suitable for mass production and application. . In addition, by appropriately controlling the total dispersion value and nonli...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problem of single output pulse working state of the existing all-fiber ultrashort pulse light source, the present invention proposes an all-fiber ultrashort pulse light source that can simultaneously generate soliton and noise-like pulses

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