公开(公告)号：US20140071456A1

公开(公告)日：2014-03-13

申请号：US14025970

申请日：2013-09-13

Applicant: University of Kent

Inventor： Adrian Podoleanu ,  Mantas Zurauskas ,  John Rogers

IPC: G01B9/02

CPC classification number: G01B9/0209 ,  G01B9/02028 ,  G01B9/02091

Abstract: The invention discloses an optical interferometer which can be used to provide simultaneous measurements over multiple path lengths and methods to employ such an interferometer as to achieve a variety of functions covering simultaneous measurements at different depths separated by an increment of a multiple differential delay in the interferometer as well as simultaneous polarization measurements from a given depth and imaging. Configurations and methods are presented to encode the axial length in an object under investigation using frequency shifting as well as chirping the frequency of signals determining the frequency shifting. Methods are disclosed on the combination of multiple path configurations as to achieve versatile functionality in measurements, by using either broadband excitation or swept source excitation, combined with either discreet frequency shifting or chirped frequency shifting. Under swept source excitation, the invention discloses a long axial range apparatus, with constant sensitivity.

Abstract translation: 本发明公开了一种光干涉仪，其可用于提供多路径长度上的同时测量以及采用这种干涉仪的方法，以实现覆盖在干涉仪中由多个差分延迟增量分开的不同深度的同时测量的各种功能 以及来自给定深度和成像的同时极化测量。 提出了配置和方法，用于使用频移对调查对象中的轴向长度进行编码，以及啁啾确定频移的信号频率。 公开了多路径配置的组合，以便通过使用宽带激励或扫频源激励来实现测量中的多功能功能，结合任何一种偏心的频移或啁啾频移。 在扫频源激励下，本发明公开了一种具有恒定灵敏度的长轴向范围装置。