A fused tension-based fiber grating pressure sensor includes an optical fiber having a Bragg grating impressed therein. The fiber is fused to tubes on opposite sides of the grating and an outer tube is fused to the tubes to form a chamber. The tubes and fiber may be made of glass. Light is incident on the grating and light is reflected from the grating at a reflection wavelength lambd1. The grating is initially placed in tension as the pressure P increases, the tension on the grating reduced and the reflection wavelength shifts accordingly. A temperature grating may be used to measure temperature and allow for a temperature-corrected pressure measurement.
申请公布号
NO20012680(A)
申请公布日期
2001.08.02
申请号
NO20010002680
申请日期
2001.05.31
申请人
CIDRA CORP
发明人
FERNALD, MARK R;BAILEY, TIMOTHY J;MILLER, MATTHEW B;SULLIVAN, JAMES M;DUNPHY, JAMES R.;WRIGHT, CHRISTOPHER J;KERSEY, ALAN D.;PUTNAM, MARTIN A;JONES, RICHARD T;MARON, ROBERT J.;DAIGLE, GUY A.;GRUNBECK, JOHN J