2140554-A is referenced by 35 patents and cites 1 patents.

A temperature measuring arrangement comprises means 2 for generating and launching light pulses into one end (i.e. launch end) of an optical fibre 1 which serves as a temperature sensing element and optical directional coupling means 6 located at the launch end of the temperature sensing element for directing the total back-scattered light from temperature measurement points along the sensing element into an optical back-scatter selection means which filters out a band of back-scattered light of wavelengths embracing so-called Rayleigh and Mie and Brillouin wavelengths but which permits passage of light at the so- called Stokes (Raman) and Anti-Stokes (Raman) wavelengths to processing means for providing temperature measurements.; The selection means may comprise an optical dichrometer with a grating 4 or the equivalent and detectors 7 of the back-scattered light at the Stokes and Anti-Stokes wavelengths respectively.

Title
Temperature measuring arrangement
Application Number
GB19830014569 19830526
Publication Number
2140554 (A)
Application Date
May 26, 1983
Publication Date
November 28, 1984
Inventor
Dakin John Philip
Assignee
Plessey Co
IPC
G01K 11/00
G01K 11/00
G01K 11/32
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