Infrared single mode chalcogenide glass fiber for space
Infrared single mode chalcogenide glass fiber for space
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DOI：
10.1364/oe.15.012529
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发表时间：
2007-09-17
期刊：
影响因子：
3.8
通讯作者：
Lucas, J.
中科院分区：
文献类型：
--
作者：
Houizot, P.;Boussard-Pledel, C.;Lucas, J.
达尔文发现行星任务正在研究的一项重要测量技术是零位干涉测量法，它能够探测到轨道上行星的微弱红外发射线。这项技术需要在干涉仪中合成一个完美的光束波前。通过在探测前使用单模波导，滤除了波前误差，获得了近乎完美的平面波前。本文报道了合适的红外透射型硫系玻璃和中红外导引光纤的研制结果和光学特性。描述了制造包芯硫化物光纤的两种不同的预制棒技术。用Te2As3Se5硫系玻璃制备的两种类型的阶跃折射率光纤在10.6微米处提供单模引导。
An important measuring technique under study for the DARWIN planet finding mission, is nulling interferometry, enabling the detection of the weak infrared emission lines of an orbiting planet. This technique requires a perfect wavefront of the light beams to be combined in the interferometer. By using a single mode waveguide before detection, wavefront errors are filtered and a virtually perfect plane wavefront is obtained. In this paper the results on the development and the optical characterisation of suitable infrared transmitting chalcogenide glasses and mid-IR guiding optical fibers are reported. Two different preform techniques for manufacturing core-cladding chalcogenide fibers are described. Two types of step index fibers, prepared with Te2As3Se5 chalcogenide glasses, offer single mode guidance at 10.6 mu m. (c) 2007 Optical Society of America.