单模光敏光纤高温特性的实验研究  

Experimental Study of Characteristics of Photosensitive Single Mode Fiber at High-temperature

作　　者：王巧云[1] 宋士德[1] 王晓旭[1] 林钧岫[1] 邹龙江[2] 

机构地区：[1]大连理工大学物理系光信息科学与技术研究所,辽宁大连116023 [2]大连理工大学材料测试分析中心,辽宁大连116023

出　　处：《半导体光电》2007年第2期221-223,共3页Semiconductor Optoelectronics

摘　　要：以单模掺锗光敏光纤为研究对象,用光谱仪观测其从室温(20℃)到1 025℃升温、降温过程中中心波长及输出功率的变化情况,并用电子扫描显微镜观察其微观结构在升温前、后是否发生变化。实验结果表明,单模光敏光纤在升温、降温过程中中心波长以及输出功率没有发生明显的变化,其中心波长、输出功率的升温曲线和降温曲线亦吻合得比较好,具有很好的重复特性;其纤芯、包层之间没有发生扩散。从而得出单模光敏光纤在20℃至1 025℃的温度范围内其中心波长、输出功率以及微观结构是稳定的;验证了用这种光纤制作的布拉格光栅在高温下失效是由光栅结构在高温下遭到了破坏所导致的。The single mode germanium-doped photosensitive fiber is applied in this paper. Between 20 ℃ and 1 025 ℃, the variations of fiber＇s central wavelength and output power are analyzed by optic spectrum analysis （OSA） and its microstructure is observed by scanning electron microscope （SEM） during the up-temperature and down-temperature. Through these variations, the high temperature characteristic of the fiber can be analyzed. The experimental results show that the fiber＇s central wavelength and output power have no obvious changes and have good repeatability; its microstructure doesn’t shift before and after temperature changes. It can be concluded that this kind of fiber＇s central wavelength, output power and microstructure have good stability between 20 ℃ and 1 025 ℃. It is proved that the reason for FBG made of this kind of fiber losing its grating characteristic at high temperature is the destruction of its grating structure at high temperature.

关 键 词：光敏光纤 高温 单模 

分 类 号：TN253[电子电信—物理电子学]