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飞秒光栅(FSG®)

基于市场对光纤布拉格光栅(FBG)的特殊需求,FBGS公司开发的飞秒光栅(FSG®)技术以拉丝塔光栅(DTG®)技术为基础,拥有更先进的制造力。

飞秒光栅(FSG®)是一种利用超短激光脉冲,采用特殊的涂层穿透技术刻写而成的均匀切趾光栅。因此,飞秒光栅(FSG®)在增加新特性的同时又保持了其原始光纤的高强度特性。FSG-Axx是一种写入高强度光纤的均匀切趾光栅,针对1550nm波长窗口的操作进行了优化。

FBGS’s FemtoSecond Grating (FSG®) technology complements the existing DTG® technology by adding new manufacturing capabilities due to special demands for Fiber Bragg Gratings (FBGs). The fabrication processes of both techniques maintain the pristine high mechanical-strength of the optical fiber. In addition, FSG®s can provide sensor configurations and features needed for special applications.

FSG® exploits the through-coating FBG inscription process, which utilizes ultrafast laser pulses launched via special optics to the fiber core without damaging the fiber coating. See below the schematic for FSG® inscription.

The focused high-power laser pulses change the index of refraction of the glass material in the core of the optical fiber due to nonlinear absorption processes. These effects are nearly independent of the doping level of the optical fiber or the type of glass, which uniquely sets this process to offer an advantage in its ability to modify any type of optical fiber. The laser pulses are guided via special optics to form a unique interference pattern, which is geometrically co-aligned with the longitudinal axis of a stationary standard optical fiber. The impinging pattern creates the desired modulated index of refraction onto a selected local length along the core of the optical fiber. This inscription defines the required reflected Bragg wavelength. In addition, an array of desired FBGs can be inscribed by translating the optical fiber along its longitudinal axis.

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案例飞秒光栅(FSG®)

ECN is one of Europe‘s largest energy research organizations, focussed on sustainable energy generation to develop safe, efficient, reliable and environmentally friendly energy systems. It has a strong international position in the fields of biomass, solar energy, wind energy, energy efficiency and policy studies

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Germany

FBGS Technologies GmbH
Winzerlaer Straße 2
D-07745 Jena

Belgium

FBGS International NV
Bell Telephonelaan 2H

B-2440 Geel

China

X2 Suzhou Electronic Technology
Room 103, No. 388
Xinping Str. SIP, Suzhou