公开(公告)号：US20150268117A1

公开(公告)日：2015-09-24

申请号：US14222757

申请日：2014-03-24

Applicant: GENERAL ELECTRIC COMPANY

Inventor： William Albert Challener ,  Glen Peter Koste ,  Sachin Narahari Dekate ,  Sabarni Palit

IPC: G01L11/02 ,  E21B47/06

CPC classification number: G01L11/025 ,  E21B47/06 ,  G01D5/35312 ,  G01D5/3538

Abstract: A pressure sensing cable in one embodiment includes a polarization maintaining (PM) optic fiber having a length; and a Fiber Bragg Grating (FBG) pair formed in the PM optic fiber. The FBG pair includes a first FBG formed at a location along the length of the optic fiber. The first FBG defines a first wavelength range at which the first FBG is reflective. The FBG pair also includes a second FBG spaced a distance from the first FBG to define a FBG cavity extending between the first FBG and the second FBG. The second FBG defines a second wavelength range at which the second FBG is reflective. The first wavelength range of the first FBG and the second wavelength range of the second FBG at least partially overlap.

Abstract translation: 一个实施例中的压力感测电缆包括具有长度的偏振维持（PM）光纤; 和在PM光纤中形成的光纤布拉格光栅（FBG）对。 FBG对包括沿着光纤长度的位置形成的第一FBG。 第一FBG定义了第一个FBG反射的第一波长范围。 FBG对还包括与第一FBG隔开距离的第二FBG，以限定在第一FBG和第二FBG之间延伸的FBG腔。 第二FBG定义了第二个波长范围，第二个FBG反射。 第一FBG的第一波长范围和第二FBG的第二波长范围至少部分重叠。