量子电子学报, 2008, 25 (5): 0625, 网络出版: 2010-06-07   

各向异性材料包层光纤Bragg光栅的反射谱

Reflectivity spectra of fiber Bragg gratings with anisotropic crystal material cladding
作者单位
1 兰州理工大学理学院,甘肃 兰州 730050
2 北京邮电大学教育部光通信和光波技术重点实验室,北京 100876
摘要
应用数值解法对包层为单轴晶体材料且其光轴平行于光纤轴的光纤功率限制因子进行了理论模拟,并从模式特性出发解释了kcl对该类光纤Bragg光栅的反射率的影响。计算结果表明:对于HE11模,各向同性材料包层光纤中的能量比单轴晶体材料包层光纤中的能量更容易集中在纤芯中传输,而且集中程度与kcl的取值有关;各向异性材料包层比各向同性材料包层的光纤Bragg光栅的反射率要高;此类光纤Bragg光栅的反射率主要是由光纤纤芯和包层中能量分布决定的。
Abstract
The power confinement factor of the fiber with cladding made of uniaxial crystal material whose optical axis is parallel to the axis of fiber was investigated by means of numeric solution and the influence of kcl on the reflectivity of this kind of fiber Bragg gratings was physically interpreted with mode characteristics.The calculated results indicate that for HE11 mode,more power is transmitted by the core of the fiber with cladding made of isotropic material than that with cladding made of uniaxial crystal material and the degree is dependent on the parameter kcl,the reflectivity of the fiber Bragg grating with cladding made of uniaxial crystal material is much higher than that with cladding made of isotropic material,the reflectivity of this kind of fiber Bragg grating is greatly influenced by the energy distribution between the core and the cladding of this kind of the fiber.

侯尚林, 李鸿伯, 黎锁平, 王道斌, 雷景丽. 各向异性材料包层光纤Bragg光栅的反射谱[J]. 量子电子学报, 2008, 25(5): 0625. HOU Shang-lin, LI Hong-bo, LI Suo-ping, WANG Dao-bin, LEI Jing-li. Reflectivity spectra of fiber Bragg gratings with anisotropic crystal material cladding[J]. Chinese Journal of Quantum Electronics, 2008, 25(5): 0625.

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