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Expired Canadian patentCanada

Optical communication by injection-locking to a signal which modulates an optical carrier

CA 1315851 C · Owner: Li, Tingye · Inventors: Li, Tingye; Wood, Thomas Huntington; Giles, Clinton Randy

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract, An optical communication system is disclosed including an alloptical device whose output modulated optical beam is locked to an input modulated optical beam. In a specific embodiment of the system the device, may be a self-electro-optic effect device (SEED) which is operated as an, oscillator by means of an associated tank circuit. Such an embodiment permits recovery of a clock frequency from a bit stream which is input into the device. When the output of the device is directed into an optical decision element, an all-optical regenerator may be realized.

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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 April 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 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.
FiledJanuary 19, 1989
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315851 C
Classification (IPC)H04B10/00 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJan 19, 1989Patent grantedApril 6, 1993Term endedApril 6, 2010

Sources & verification

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