公开(公告)号：US09389174B2

公开(公告)日：2016-07-12

申请号：US14308296

申请日：2014-06-18

Applicant: WEATHERFORD/LAMB, INC.

Inventor： Domino Taverner ,  John J. Grunbeck ,  Jason Scott Kiddy

IPC: G01N21/47 ,  G01M11/00 ,  G01M11/02 ,  E21B47/00 ,  G01D5/353

CPC classification number: G01N21/4788 ,  E21B47/0002 ,  G01D5/35383 ,  G01D5/3539 ,  G01M11/02 ,  G01M11/33 ,  G01N2201/061 ,  G01N2201/0696 ,  G01N2201/08

Abstract: Methods and apparatus for interrogating sets of optical elements having characteristic wavelengths spanning a sweep range while avoiding overlapping reflections from the different sets when performing a wavelength sweep are provided. One example method generally includes introducing a pulse of light, by an optical source, into an optical waveguide to interrogate at least first and second sets of optical elements, wherein the optical elements within each set have different characteristic wavelengths and wherein the first and second sets are separated in time such that a first time window over which light is reflected from the optical elements in the first set and reaches a receiver does not overlap with a second time window over which light is reflected from the optical elements in the second set and reaches the receiver; and processing the reflected light to determine one or more parameters corresponding to the optical elements.

Abstract translation: 提供了用于询问具有跨越扫描范围的特征波长的光学元件组的方法和装置，同时避免当执行波长扫描时来自不同组的重叠反射。 一个示例性方法通常包括通过光源将光脉冲引入到光波导中以询问至少第一组和第二组光学元件，其中每组中的光学元件具有不同的特征波长，并且其中第一和第二组 在时间上分离，使得光从第一组中的光学元件反射并到达接收器的第一时间窗口不与第二时间窗口重叠，在第二时间窗口中光从第二组中的光学元件反射，并且到达第二时间窗口 收件人; 以及处理所述反射光以确定与所述光学元件对应的一个或多个参数。