TN25 2003053651光纤带宽特性对VISAR测试影响的分析=Bandwidth ofoptical fiber and its restrictions on VISAR[刊,中]/彭其先(中物院流体物理研究所.四川,绵阳(621900)),马如超…//高压物理学报.-2002,16(3).-237-240对多模光纤的带...TN25 2003053651光纤带宽特性对VISAR测试影响的分析=Bandwidth ofoptical fiber and its restrictions on VISAR[刊,中]/彭其先(中物院流体物理研究所.四川,绵阳(621900)),马如超…//高压物理学报.-2002,16(3).-237-240对多模光纤的带宽特性进行了分析,发现阶跃折射率光纤的带宽只能做到数MHz·km。展开更多
O734.1 2003043077用最佳偏振角泵浦光提高晶体中两波耦合增益=Enhancementof two-wave coupling with optimum polarizationof the pump beams in Ce:KNSBN crystal[刊,中]/刘宏利(南开大学现代光学研究所,教育部光学信息技术科学开放...O734.1 2003043077用最佳偏振角泵浦光提高晶体中两波耦合增益=Enhancementof two-wave coupling with optimum polarizationof the pump beams in Ce:KNSBN crystal[刊,中]/刘宏利(南开大学现代光学研究所,教育部光学信息技术科学开放研究实验室.天津(300071)),王肇圻…∥光电子·激光.-2002,13(11).-1135-1137在信号光保持e光情况下,通过改变泵浦光的偏振方向,实现了Ce:KNSBN光折变类光纤中两波耦合增益的提高。通过实验发现,在入射夹角为7°时,泵浦光存在着最佳偏振角度10°,可以获得最大的两波耦合增益。在信-泵比较小时,泵浦光在最佳偏振角度下可获得较高的两波耦合增益,并且可以一定程度地抑制扇光栅的产生,提高输出信号光的信噪比。信-泵比为1:100时,获得两波耦合增益和信噪比分别是0°偏振角时的1.3倍和2.0倍。图4参10(严寒)展开更多
Tilted fiber Bragg grating （TFBG） and reflective tilted fiber Bragg grating （R-TFBG） were proposed and demonstrated in the graded-index multimode fiber （GI-MMF）. The TFBGs with grating planes tilted at an angle ...Tilted fiber Bragg grating （TFBG） and reflective tilted fiber Bragg grating （R-TFBG） were proposed and demonstrated in the graded-index multimode fiber （GI-MMF）. The TFBGs with grating planes tilted at an angle of 2.5° corresponding to the fiber axis were inscribed. The TFBGs in the GI-MMF had the good linear sensitivity to the temperature, strain and curvature. The fiber was then cleaved at the far end of the TFBG to form an R-TFBG using the Fresnel reflection of the fiber end. The reflective spectra of the R-TFBG were given, and the temperature sensing properties were also investigated.展开更多
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 mo...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.展开更多
文摘TN25 2003053651光纤带宽特性对VISAR测试影响的分析=Bandwidth ofoptical fiber and its restrictions on VISAR[刊,中]/彭其先(中物院流体物理研究所.四川,绵阳(621900)),马如超…//高压物理学报.-2002,16(3).-237-240对多模光纤的带宽特性进行了分析,发现阶跃折射率光纤的带宽只能做到数MHz·km。
文摘O734.1 2003043077用最佳偏振角泵浦光提高晶体中两波耦合增益=Enhancementof two-wave coupling with optimum polarizationof the pump beams in Ce:KNSBN crystal[刊,中]/刘宏利(南开大学现代光学研究所,教育部光学信息技术科学开放研究实验室.天津(300071)),王肇圻…∥光电子·激光.-2002,13(11).-1135-1137在信号光保持e光情况下,通过改变泵浦光的偏振方向,实现了Ce:KNSBN光折变类光纤中两波耦合增益的提高。通过实验发现,在入射夹角为7°时,泵浦光存在着最佳偏振角度10°,可以获得最大的两波耦合增益。在信-泵比较小时,泵浦光在最佳偏振角度下可获得较高的两波耦合增益,并且可以一定程度地抑制扇光栅的产生,提高输出信号光的信噪比。信-泵比为1:100时,获得两波耦合增益和信噪比分别是0°偏振角时的1.3倍和2.0倍。图4参10(严寒)
基金This work is supported by National Natural Science Foundation of China （61107073, 61107072 and 61106045）, Fundamental Research Funds for the Central Universities （ZYGX2011J002）, Research Fund for the Doctoral Program of Higher Education of China （20110185120020）.
文摘Tilted fiber Bragg grating （TFBG） and reflective tilted fiber Bragg grating （R-TFBG） were proposed and demonstrated in the graded-index multimode fiber （GI-MMF）. The TFBGs with grating planes tilted at an angle of 2.5° corresponding to the fiber axis were inscribed. The TFBGs in the GI-MMF had the good linear sensitivity to the temperature, strain and curvature. The fiber was then cleaved at the far end of the TFBG to form an R-TFBG using the Fresnel reflection of the fiber end. The reflective spectra of the R-TFBG were given, and the temperature sensing properties were also investigated.
文摘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.
