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	High precision measurement of refractive index profile of cylindrical glass bodies
	COOK, IAN DAVID; FONTAINE, NORMAN HENRY; GOLLIER, JACQUES; WU, QI
	2016-05-06
著作权人	CORNING INCORPORATED
专利号	WO2016069832A1
国家	世界知识产权组织
文献子类	发明申请
其他题名	High precision measurement of refractive index profile of cylindrical glass bodies
英文摘要	According to some embodiments a method of measuring the refractive index profile of a consolidated glass body having a cylindrical surface comprises the steps of: (a) forming an image of a slit behind the glass body; (b) optionally pre-scanning the cylindrical surface of the test glass body or a reference glass body and analyzing the data within a fixed window to determine the likely location of the zero-order, un-diffracted beam while ignoring other diffracted beams; (c) optionally adjusting the optical power to improve the intensity of the data within the fixed window in order to improve the analysis; (d) predicting the trajectory of the zero-order beam through the preform based on the sampling location xi (incidence position) of the light impinging on the cylindrical surface and the location at which the zero-order beam impinges on the detector; (e) measuring the cylindrical surface of a glass body while using the estimated location of the zero-order beam and adjusted optical power to set the center of a floating window and the beam power at each measurement point; (e) determining deflection angles of the exiting zero-order beam within the floating window at each sampling location; (e) calculating the refractive index profile of glass body by utilizing a transformation function which determines refractive index at each location based upon the measured deflection angle function of the beam.
公开日期	2016-05-06
申请日期	2015-10-29
状态	未确认
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/62558]
专题	半导体激光器专利数据库
作者单位	CORNING INCORPORATED
推荐引用方式 GB/T 7714	COOK, IAN DAVID,FONTAINE, NORMAN HENRY,GOLLIER, JACQUES,et al. High precision measurement of refractive index profile of cylindrical glass bodies. WO2016069832A1. 2016-05-06.

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