公开(公告)号：FR2458076A1

公开(公告)日：1980-12-26

申请号：FR8011807

申请日：1980-05-28

Applicant: ASEA AB

Inventor： BROGARDH TORGNY ,  ENGSTROM OLOF

IPC: G01K1/02 ,  G01K11/12 ,  G01R31/26 ,  G01R19/00 ,  H01L31/12

公开(公告)号：FR2467395A1

公开(公告)日：1981-04-17

申请号：FR8021328

申请日：1980-10-06

Applicant: ASEA AB

Inventor： ENGSTROM OLOF ,  OVREN CHRISTER

IPC: G01D5/353 ,  G01J5/58 ,  G01K1/02 ,  G01K11/12 ,  G01K11/20 ,  G01K11/32 ,  G01J5/08 ,  G01K13/00 ,  G01J3/38 ,  G01J3/50 ,  G02B5/16

Abstract: A fiber-optic temperature-measuring apparatus which monitors the photo-luminescence of a body of solid material subjected to the temperature to be measured. Exciting radiation is conducted by means of at least one optical fiber towards a material with temperature-dependent luminescence which is in optical contact with the fiber, whereby luminescence occurs. The radiation emitted as a consequence of the luminescence is transmitted via at least one optical fiber from the body to a place of measurement, where a measure of the temperature may be obtained. The luminescent body may consist of a semiconductor material.

公开(公告)号：FR2458080A1

公开(公告)日：1980-12-26

申请号：FR8011808

申请日：1980-05-28

Applicant: ASEA AB

Inventor： BROGARDH TORGNY ,  ENGSTROM OLOF

IPC: G01J3/42 ,  G01R15/24 ,  G01R23/17 ,  G01R29/08 ,  G01R33/032 ,  G02F1/09 ,  G02F1/17 ,  G01R13/40

Abstract: A fiber optical measuring device for measuring a magnetic or electric field comprises an optical modulator influenced by the field. The optical properties of the modulator are dependent on the magnetic or electric field acting on the modulator. The optical property which is made use of is the field dependence of at least one absorption edge of the radiation absorption spectrum of the modulator material. Optical fibers may be used for feeding light into the modulator and for leading away light that has passed through the modulator.