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Expired Canadian patentCanada

Broadband optical fiber laser

CA 1313404 C · Owner: Liu, Karen · Inventors: Kim, Byoung Y.; Digonnet, Michel J. F.; Liu, Karen

CIPO record

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Abstract From the Canadian patent

STANF.8C2 PATENT, BROADBAND OPTICAL FIBER LASER Abstract of the Disclosure, An optical fiber laser includes a single-mode optical fiber doped with a lasing material such as Neodymium. The optical fiber is pumped with a pump optical signal having a pump wavelength selected to cause spontaneous emission of an optical signal at a second wavelength different from the pump wavelength. The optical fiber is formed into a laser cavity such as by including a suitable reflector at each of the two ends of a suitable length of the optical fiber so that the emitted optical signal oscillates therein. One of the reflectors has a reflectivity at the wavelength of the emitted light so that most (e.g. …

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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 February 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 2, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 30, 1989
GrantedFebruary 2, 1993
Term endedFebruary 2, 2010
Patent numberCA 1313404 C
Classification (IPC)H01S3/30 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMarch 30, 1989Patent grantedFeb 2, 1993Term endedFeb 2, 2010

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.