Method of measuring the parameters of optical fibers
CA 1054361 A · Owner: Western Electric Company, Incorporated · Inventors: Watkins, Laurence S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, The present invention relates to a method of measuring the cladding thickness, t of a clad optical fiber of known core diameter, DC and of known cladding core refractive indices m1 and m2 respectively. The method comprises the steps of directing a beam of spatially coherent monochromatic radiation at the fiber to thereby generate a complex scattering pattern. At least a portion of the pattern includes contributions from the diffraction the, reflection and the refraction of the beam of the fiber. The scattering pattern is spatially radially disposed about the fiber and has a fringe pattern intensity modulation superimposed thereon. The method further includes, at …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 15, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.