Chalcogenide glass fiber with a core-cladding structure.
Chalcogenide glass fiber with a core-cladding structure.
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DOI：
10.1364/ao.28.005122
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发表时间：
1989-12
期刊：
影响因子：
1.9
通讯作者：
J. Nishii;T. Yamashita;T. Yamagishi
中科院分区：
文献类型：
--
作者：
J. Nishii;T. Yamashita;T. Yamagishi
采用两种方法制备了具有芯包结构的GeAsSeTe、GeSeTeTl和GeSeTe玻璃纤维：坩埚拉伸和预制棒拉伸。芯层直径为340微米，包层直径为440微米。用剪切法测量了光纤的传输损耗谱。为了减少芯层与包层界面结构缺陷造成的损耗，采用坩埚拉伸法是较好的方法。在具有GeSeTe芯和GeAsSeTe包层的光纤中，在10.6微米(CO(2)激光的波长)处获得了最低的1.7dB/m的损耗。利用一根1.5m长的光纤研究了CO(2)激光的传输，获得了2W的输出功率(功率密度为2.2kW/cm(2))。
GeAsSeTe, GeSeTeTl, and GeSeTe glass fibers with a core-cladding structure were prepared by one of two methods: crucible drawing or preform drawing. The diameter of the core was 340 microm and that of the cladding was 440 microm. The transmission loss spectra of the fibers were measured by the cut-back method. The crucible drawing method was preferable to reduce the loss due to structural imperfections at the interface of the core and cladding. The lowest loss of 1.7 dB/m was achieved at 10.6 microm (the wavelength of the CO(2) laser) in the fibers with a GeSeTe core and a GeAsSeTe cladding. Transmission of CO(2) laser power was examined using a 1.5-m long fiber and an output power of 2 W (2.2 kW/cm(2) in power density) was obtained.