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Tuning, attenuating, and switching by controlled flexure of long-period fiber gratings

机译:通过控制长周期光纤光栅的弯曲来进行调谐,衰减和切换

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摘要

Azimuthal variations in the refractive index that are inherent in CO2-laser-induced long-period fiber gratings (LPFG's) coupled to small controlled flexure of the LPFG produce a wide variety of transmission characteristics as a function of LPFG curvature. The particularly useful cases of (1) wavelength tuning at a constant attenuation and (2) variable attenuation (switching) at a constant wavelength are demonstrated by flexing of LPFG's that have been appropriately axially rotationally oriented relative to the plane of curvature. (C) 2001 Optical Society of America. [References: 10]
机译:CO2激光诱导的长周期光纤光栅(LPFG's)固有的折射率的方位角变化与LPFG的较小受控挠曲会产生多种透射特性,这是LPFG曲率的函数。 (1)在恒定衰减下进行波长调谐和(2)在恒定波长下进行可变衰减(切换)的特别有用的情况通过相对于曲率平面进行了适当轴向旋转定向的LPFG的弯曲进行了演示。 (C)2001年美国眼镜学会。 [参考:10]

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