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高强度硫系玻璃微结构光纤研究

ISSN号：1005-0086
期刊名称：光电子-激光
时间：2013.3.15
页码：530-534
分类：TQ171.77[化学工程—玻璃工业;化学工程—硅酸盐工业]
作者机构：[1]宁波大学信息科学与工程学院,浙江宁波315211
相关基金：国家自然科学基金（60878042,60908032,60978058）和浙江省杰出青年基金（R1101263）资助项目
相关项目：红外硫系玻璃基质光子晶体光纤设计、制备及性能研究

关键词：微结构光纤(MOF), 高强度硫系微结构光纤(CGMOF), 挤压预制棒, 硫系玻璃, micro-structure optical fiber （MOF） , high tension ehalcogenide glass MOF （CGMOF） , extruded perform, chalcogenide glass

中文摘要：

针对硫系玻璃微结构光纤缺少有效制备方法的问题，本文选用可塑性较好的Ge20Sb15Se65硫系玻璃，利用自制的硫系玻璃挤压机制备了多孔硫系玻璃微结构光纤（CGMOF）。利用红外热像仪以及傅里叶红外光谱仪测试了挤压前后玻璃的红外透过性能、根据不同厚度玻璃片的透过谱，计算了挤压后玻璃的光学损耗特性。利用扫描电子显微镜观察拉制光纤的横截面，测试了光纤的直径。分析结果表明，挤压后的硫系玻璃的红外透过率和损耗较挤压前没有显著的变化。挤压前后的硫系玻璃在10μm处的光学损耗分别为0．25dB／cm和0．27dB／cm。利用与硫系玻璃具有相近软化点的塑料（PES）聚合物作为光纤的保护层，光纤的抗拉强度是标准石英光纤的1．45倍，显著提高了CGMOF的强度。

英文摘要：

Chalcogenide glass micro-structure optical fibers （CGMOFs） have wide potential applications in the field of infrared laser energy transmission and infrared optical fiber sensing for their unique optical properties. The problem is that there is no good method to prepare chaleogenide glass micro-structure optical fibers up to now. In this paper,we attempt to fabricate ehalcogenide glass micro-structure optical fibers by using the press forming method. A glass extruder is designed to extrude Ge20Sb15Se65 chalcogenide glass into a multi-hole fiber preforms. Then,the extruder preform is drawn into fiber using an im- proved fiber drawing machine. The infrared transmitting property is measured by using infrared thermal imager and infrared spectrometer. The optical loss of extruded glass is calculated based on the infrared transmission spectra of glass disks with different thicknesses. We also measure fiber cross-section and its diameter by scanning electron microscope （SEM）. The results show that the infrared transmission spectra of the extruded glass have not decreased obviously. The optical losses of the glasses before and after extruding at 10 gm are 0.25 dB/cm and 0.27 dl3/cm, respectively. The strength of chalcogenide glass fiber protected by a thin layer of plastic polymer is 1.45 times of that of a standard silica fiber,promoting the development of chalcogenide glass micro-structure optical fibers.

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