公开(公告)号：US20100134787A1

公开(公告)日：2010-06-03

申请号：US12511803

申请日：2009-07-29

申请人： Kyoungheon Kim ,  Seunghwan Kim ,  Seounghun Lee ,  Elhang Lee

发明人： Kyoungheon Kim ,  Seunghwan Kim ,  Seounghun Lee ,  Elhang Lee

IPC分类号： G01N21/00 ,  G01B9/02 ,  G06F15/00

CPC分类号： G01M11/335 ,  G01M11/331 ,  G01M11/338

摘要： The present invention relates to a measurement method of the chromatic dispersion of an optical waveguide using an optical interferometer with a broadband multi-wavelength light source and an optical spectrum analyzing apparatus, wherein one arm, called “reference arm” of the interferometer's two arms has an adjustable air spacing and the other arm, called “sample arm” can contain said optical waveguide to be measured, and including the following measurement and analysis steps: measuring interference spectra of the optical beam output exiting from the said interferometer with an optical spectrum analyzing apparatus when said optical waveguide is connected to said sample arm, and when said optical waveguide is not connected to said sample arm respectively; by adjusting the reference arm length for appearance of clear interference patterns; converting the wavelength-domain interference spectra into frequency-domain interference spectra and calculating phase difference values of the interference peaks of one of the spectra from a predetermined reference peak as a function of the frequency change by counting the interference peak (or valley) points; finding a Taylor series curve fit function for each set of the phase difference value data corresponding to each of the two interference spectra; and calculating a chromatic dispersion coefficient of the optical waveguide by using the coefficients of the Taylor series curve fit functions.

摘要翻译： 本发明涉及使用具有宽带多波长光源的光学干涉仪和光谱分析装置的光波导的色散的测量方法，其中干涉仪的两个臂的称为“参考臂”的一个臂具有 称为“样品臂”的可调节空气间距可以包含待测量的所述光波导，并且包括以下测量和分析步骤：测量从所述干涉仪离开的光束输出的干涉光谱与光谱分析 当所述光波导连接到所述样品臂时，并且当所述光波导分别不连接到所述样品臂时， 通过调整参考臂的长度来显现干扰图形的清晰度; 将波长域干涉光谱转换成频域干涉光谱，并通过对干扰峰（或谷）点进行计数，计算作为频率变化的函数的来自预定参考峰的一个频谱的干扰峰的相位差值; 针对与两个干涉光谱中的每一个相对应的每组相位差值数据，找到泰勒级数曲线拟合函数; 以及通过使用泰勒级数曲线拟合函数的系数来计算光波导的色散系数。

公开(公告)号：US08040523B2

公开(公告)日：2011-10-18

申请号：US12511803

申请日：2009-07-29

申请人： Kyong Hon Kim ,  Seunghwan Kim ,  Seounghun Lee ,  Elhang Lee

发明人： Kyong Hon Kim ,  Seunghwan Kim ,  Seounghun Lee ,  Elhang Lee

IPC分类号： G01B9/02 ,  G01J3/45 ,  G01N21/00

CPC分类号： G01M11/335 ,  G01M11/331 ,  G01M11/338

摘要： The present invention relates to a measurement method of the chromatic dispersion of an optical waveguide using an optical interferometer with a broadband multi-wavelength light source and an optical spectrum analyzing apparatus, wherein one arm, called “reference arm” of the interferometer's two arms has an adjustable air spacing and the other arm, called “sample arm” can contain said optical waveguide to be measured, and including the following measurement and analysis steps: measuring interference spectra of the optical beam output exiting from the said interferometer with an optical spectrum analyzing apparatus when said optical waveguide is connected to said sample arm, and when said optical waveguide is not connected to said sample arm respectively; by adjusting the reference arm length for appearance of clear interference patterns; converting the wavelength-domain interference spectra into frequency-domain interference spectra and calculating phase difference values of the interference peaks of one of the spectra from a predetermined reference peak as a function of the frequency change by counting the interference peak (or valley) points; finding a Taylor series curve fit function for each set of the phase difference value data corresponding to each of the two interference spectra; and calculating a chromatic dispersion coefficient of the optical waveguide by using the coefficients of the Taylor series curve fit functions.

摘要翻译： 本发明涉及使用具有宽带多波长光源的光学干涉仪和光谱分析装置的光波导的色散的测量方法，其中干涉仪的两个臂的称为“参考臂”的一个臂具有 称为“样品臂”的可调节空气间距可以包含待测量的所述光波导，并且包括以下测量和分析步骤：测量从所述干涉仪离开的光束输出的干涉光谱与光谱分析 当所述光波导连接到所述样品臂时，并且当所述光波导分别不连接到所述样品臂时， 通过调整参考臂的长度来显现干扰图形的清晰度; 将波长域干涉光谱转换成频域干涉光谱，并通过对干扰峰（或谷）点进行计数，计算作为频率变化的函数的来自预定参考峰的一个频谱的干扰峰的相位差值; 针对与两个干涉光谱中的每一个相对应的每组相位差值数据，找到泰勒级数曲线拟合函数; 以及通过使用泰勒级数曲线拟合函数的系数来计算光波导的色散系数。