Method and apparatus for generation and transmission of high energy optical pulses for long range measurements
CA 2515705 C · Owner: Farhadiroushan, Mahmoud · Inventors: Parker, Tom Richard; Kean, Peter Neil; Farhadiroushan, Mahmoud
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for generating and transmitting high energy optical pulses are described. Distributed temperature sensors usually use Raman scattering in optical fibres as the means to determine the temperature. Here light from a laser source is sent down a fibre and the small amount of light that is scattered back towards the source is analysed. As the fibre length increases, the resolutions of the temperature and loss measurements become poorer. This is because losses in an optical fibre attenuate the signal. An obvious solution to this problem is to launch more light into the fibre to compensate for the losses but stimulated Raman scattering limits how much light may be …
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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
- Filed February 11, 2004 and granted December 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2026.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.