The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2009
Filed:
Dec. 13, 2005
Sylvie Menezo, Nantes, FR;
Sylvie Menezo, Nantes, FR;
Sercel, Carquefou, FR;
Abstract
The invention relates to an apparatus for multiplexing Fiber Optic Interferometric Sensors (FOISs), which apparatus comprises means (1) forming the an optical source for providing m*n distinct wavelengths λ, λ, . . . , λ, λ, λ, . . . , λ, . . . , λ, λ, . . . , λ, the optical source including means for generating m groups () of light pulses, each group(1≦j≦m) being made up of n light pulses P(λ), P(λ), . . . , P(λ) of distinct wavelengths λ, λ, . . . , λ, the n light pulses P(λ), P(λ), . . . , P) being time delayed one from another, Fiber Optic Interferometric Sensors distributed in m groups () of n sensors each, then sensors of a same group being located at the same point and set into a star like arrangement around the input point of the group, and each of the n sensors of a same group, 1≦j≦m, being associated with wavelength selective means so that it is interrogated by one light pulse only among the pulses P(λ), P(λ), . . . , P(λ) of distinct wavelengths respectively λ, λ, . . . , λ.