Optical fibre interferometer
CA 1308936 C · Owner: Microtel Limited · Inventors: Ahmed, M. Jamil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract Of The Invention An optical fibre interferometer particularly adapted to provide a light output that is modulated in relation to the intensity of an electromagnetic field includes a single-mode fibre of substantially non-electrooptic material (20 22 and 24) to which has been spliced (at 26 and 28) a single-mode fibre of substantially electrooptic material (30). When the interferometer is placed in an electromagnetic field, the optical characteristics of the substantially electrooptic fibre are varied, but the optical characteristics of the substantially non-electrooptic fibre are not. As a result the light passing through the, substantially non-electrooptic and electrooptic fibres …
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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 October 20, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 2009.
- 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
Timeline From CIPO dates
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.