Photonic Sensors, 2013, 3 (1): 67, 网络出版: 2013-04-16
Modeling Refractive Index Change in Writing Long-Period Fiber Gratings Using Mid-Infrared Laser Radiation
Modeling Refractive Index Change in Writing Long-Period Fiber Gratings Using Mid-Infrared Laser Radiation
摘要
Abstract
The research on the use of fiber sensors based on long-period fiber gratings inscribed by CO2 laser mid-infrared radiation has increased in the last years. In this paper, a set of analytical expressions are used to model the interaction between laser radiation and an optical fiber and to determine the resulting refractive index change. Thermal and residual stress analysis is exemplified for a standard single mode fiber, demonstrating the capability of these models to point out the necessary parameters to achieve proper optical fiber devices based on long period fiber gratings. Experimental results are also presented.
Joao M. P. COELHO, Marta C. NESPEREIRA, Manuel ABREU, José M. REBORDAO. Modeling Refractive Index Change in Writing Long-Period Fiber Gratings Using Mid-Infrared Laser Radiation[J]. Photonic Sensors, 2013, 3(1): 67. Joao M. P. COELHO, Marta C. NESPEREIRA, Manuel ABREU, José M. REBORDAO. Modeling Refractive Index Change in Writing Long-Period Fiber Gratings Using Mid-Infrared Laser Radiation[J]. Photonic Sensors, 2013, 3(1): 67.
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