公开(公告)号：US07173706B2

公开(公告)日：2007-02-06

申请号：US10661806

申请日：2003-09-12

Applicant: Andrew Wilson ,  Nicola van Leeuwen

Inventor： Andrew Wilson ,  Nicola van Leeuwen

IPC: G01N21/00

CPC classification number: G01N21/3504 ,  G01N2021/391 ,  G01N2201/08 ,  G08B17/103

Abstract: An apparatus for remote gas sensing comprising a light source, a photodetector, a gas cell containing gas or a zone through which the gas passes and through which light from the light source passes and is reflected back to the photodetector, wherein the light source, photodetector and gas cell are connected by a single polarization preserving optical fiber through which light from the light source passes to the gas cell, which light reflected back from the cell passes back through the optical fiber with a different polarization to that to the light transmitted by the light source. In one form the gas cell comprises a resonant optical cavity.

Abstract translation: 一种用于远程气体感测的装置，包括光源，光电检测器，含气体的气室或气体通过的区域，来自光源的光通过该区域通过并被反射回光电检测器，其中光源，光电检测器 并且气体单元通过单个偏振保留光纤连接，来自光源的光通过该单极化保留光纤通过气室，从单元反射回来的光以不同的偏振通过光纤，反射到与由 光源。 在一种形式中，气室包括谐振光腔。