物理学报2016，Vol.65Issue(12)：124205-1-124205-6,6.DOI:10.7498/aps.65.124205
低损耗Ge-As-Se-Te硫系玻璃远红外光纤的性能分析∗
Investigation on Ge-As-Se-Te chalcogenide glasses for far-infrared fib er
摘要
Abstract
With the development of infrared optics, low-loss waveguide materials are required. Especially, low-loss optical fiber development for far-infrared application has become a focus. Chalcogenide Ge-As-Se-Te(GAST) glasses and fibers for far-infrared light are prepared and investigated in this paper. The thermal properties and the infrared transmissions are reported. The influences of oxygen and hydrogen on the glass transmission and fiber attenuation are discussed. Low-loss GAST fiber with a structure of fine core/cladding is reported by a novel extrusion method (0.46 dB/m at 8.7 µm, 1.31 dB/m at 10.6 µm, base loss being under 1 dB/m from 7.2 to 10.3 µm). Here, the glasses are prepared by traditional vacuum melt-quenching and vapor distillation method. Structure and physical properties of GAST glass system are studied with X ray diffractions and thermal expansion instrument. Optical spectra of GAST glass system are obtained by spectrophotometer and infrared spectrometer. Main purification processes with different oxygen-getters (magnesium and aluminum) are disclosed. The fiber attenuation is measured by the cut-back method with an Fourier transform infrared spectroscopy spectrometer. The lowest loss of this fiber can be reduced to 1.32 dB/m at 10.6 µm, as it has a structure of Ge20As20Se15Te45 core and Ge20As20Se17Te43 cladding. The results show that these glasses are well transparent in a wide infrared window from 1.1 to 22 µm, and these glass fibers can transmit far-infrared light up to 12 µm, thus the GAST glass system is one of good candidates for far-infrared transparent materials. The fiber attenuation can be reduced effectively by the reasonable purification and novel extruded-processing. These fibers are suited for the power delivery of CO2 laser.关键词
GeAsSeTe/硫系玻璃/远红外光纤/低损耗Key words
GeAsSeTe/chalcogenide glass/far-infrared/low-loss引用本文复制引用
赵浙明,聂秋华,戴世勋,吴波,刘雅洁,江岭,密楠,王训四,刘自军,刘硕,潘章豪..低损耗Ge-As-Se-Te硫系玻璃远红外光纤的性能分析∗[J].物理学报,2016,65(12):124205-1-124205-6,6.基金项目
国家自然科学基金(批准号:61377099,61177087,61307060)、浙江省重中之重学科开放基金(批准号：xkxl1508, xkxl1318)、教育部新世纪优秀人才支持计划(批准号：NCET-10-0976)、浙江省151人才第三层次和宁波大学王宽诚幸福基金资助的课题.@@@@* Project supported by the National Natural Science Foundation of China (Grant Nos.61377099,61177087,61307060), the Opened Key-Subject Construction Fund of Zhejiang Province, China (Grant Nos. xkxl1508, xkxl1318), the Program for New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-10-0976), the 151 Talents in Zhejiang Province, China, and the K. C. Wong Magna Fund of Ningbo University, China （批准号:61377099,61177087,61307060）
