公开(公告)号：ZA846885B

公开(公告)日：1985-04-24

申请号：ZA846885

申请日：1984-09-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MELTZ GERALD ,  ALLEN LOUIS BENTON JR ,  FERRAR CARL MCALVAY

IPC: G01L11/00 ,  G01L1/24 ,  G01L9/00 ,  G01L11/02 ,  G01L ,  G12B ,  G02B

Abstract: An integrated optical pressure transducer having a diaphragm fabricated from a low-loss glass is positioned at the location where pressure changes are to be measured. An optical waveguide loop formed on one surface of the diaphragm acts as a ring cavity in which the difference between the resonating frequencies varies with pressure but not with temperature. Light energy is coupled into the waveguide loop from an optical source through a tangentially located input waveguide. An output waveguide, also tangentially located, couples light energy from the waveguide loop to a broadband detector so that the changes in frequency spectrum of the resonating frequencies within the waveguide loop can be monitored.

公开(公告)号：ZA8406885B

公开(公告)日：1985-04-24

申请号：ZA8406885

申请日：1984-09-03

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MELTZ GERALD ,  ALLEN LOUIS BENTON JR ,  FERRAR CARL MCALVAY

IPC: G01L11/00 ,  G01L1/24 ,  G01L9/00 ,  G01L11/02 ,  G01L ,  G02B ,  G12B

CPC classification number: G01L9/0076 ,  G01L11/025

公开(公告)号：IT8422903D0

公开(公告)日：1984-09-28

申请号：IT2290384

申请日：1984-09-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MELTZ GERALD ,  ALLEN LOUIS BENTON JR ,  FERRAR CARL MCALVAY

IPC: G01L11/00 ,  G01L1/24 ,  G01L9/00 ,  G01L11/02

Abstract: An integrated optical pressure transducer having a diaphragm fabricated from a low-loss glass is positioned at the location where pressure changes are to be measured. An optical waveguide loop formed on one surface of the diaphragm acts as a ring cavity in which the difference between the resonating frequencies varies with pressure but not with temperature. Light energy is coupled into the waveguide loop from an optical source through a tangentially located input waveguide. An output waveguide, also tangentially located, couples light energy from the waveguide loop to a broadband detector so that the changes in frequency spectrum of the resonating frequencies within the waveguide loop can be monitored.