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:
Dec. 17, 1985
Filed:
Feb. 09, 1983
Jacques E Ludman, Westford, MA (US);
John L Sampson, Lexington, MA (US);
Henry J Caulfield, Nagog Woods, MA (US);
Other;
Abstract
A fiber Fourier spectrometer having a focusing element, a beamsplitter, a pair of monomode optical fibers, a block of electro-optic material defining a pair of optical paths and means for controlling the effective length of one of the optical paths. A source of electromagnetic radiation is focused through and reflected by the beamsplitter into the pair of monomode fibers, respectively, and from there to the respective optical paths within the electro-optic block of material. The outputs of the two optical paths are combined and received by an intensity detector. Varying the effective path length of one of the optical paths alters the phase of the beam passing therethrough. Because the source of electromagnetic radiation has different wavelengths, the spectral components of the source are phase retarded by different amounts as they pass through the electro-optic material and can therefore be analyzed by a conventional Fourier spectroscopy technique.