Fiber optical laser of L waveband with wavelength tunable

Abstract

The invention relates to a fiber optical laser of an L waveband with tunable wavelength, which is characterized by wide tuning range, simple structure, narrow width of output laser ray and high stability and etc. The fiber optical laser of an L waveband with tunable wavelength comprises a light source and an annular laser chamber, wherein the light source is used for transmitting the light into the annular chamber; the light is partially output by a coupler, and the another part of the light is sent to an optical fiber grating filter with mechanical sensing growth cycle which is in transition connection with the interior of the annular chamber, wherein the optical fiber grating filter with mechanical sensing growth cycle comprises a pressure groove template of which the cycle is P; the pressure groove template is matched with a pair of smooth base plates; an optical fiber of an optical fiber grating with a growth cycle to be written and a balance optical fiber are arranged between the two smooth base plates; and the wavelength regulation of the optical fiber grating filter with mechanical sensing growth cycle is realized by changing the cycle of the pressure groove template with the cycle P under the under that the preset pressure is maintained. The fiber optical laser of an L waveband with tunable wavelength provided by the invention has the advantages that the inhibition band within the annular chamber can be regulated, the gain peak of the annular chamber is changed, and the laser with wavelength tunable is realized.

Description

technical field [0001] The invention relates to a wavelength-tunable laser, in particular to a wavelength-tunable L-band fiber laser, which belongs to the fields of optical fiber communication and optical fiber sensing. Background technique [0002] Fiber laser is one of the most cutting-edge research topics in the field of technology research in the current information age. With the progress of laser diode pumping technology and research on fiber materials and processes, various types of fiber lasers can be suitable for different applications. The field of application has also rapidly expanded from the previous field of optical fiber communication to other broader laser applications, fiber optic sensing and fiber optic gyroscopes. [0003] Tunable fiber lasers have been widely used due to their wide available bandwidth, high power, narrow linewidth, and natural compatibility with fiber optic components. Tunable fiber lasers not only become the ideal signal carrier for high...

AI Technical Summary

Problems solved by technology

But based on UV light or CO 2 Laser-written LPFG devices are expensive, and large-scale tuning requires the introduction of high-temperature instruments or complex stress structures

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