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(12) Patent: | (11) CA 1257494 |
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(21) Application Number: | 1257494 |
(54) English Title: | CROSSOVER ARRANGEMENT FOR OPTICAL CONDUCTORS |
(54) French Title: | DISPOSITIF DE CROISEMENT POUR CONDUCTEURS OPTIQUES |
Status: | Term Expired - Post Grant |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | R. JOHN HALEYHALEY, R. JOHN |
(74) Associate agent: | |
(45) Issued: | 1989-07-18 |
(22) Filed Date: | 1986-03-12 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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CROSSOVER ARRANGEMENT FOR OPTICAL CONDUCTORS
Abstract of the Disclosure
A crossover arrangement for optical conductors, each in the
form of a rod of light-transmissive material, includes a multifaceted,
e.g. polyhedral member having pairs of mutually parallel opposed
facets. Each pair of facets extend in a direction transverse,
preferably perpendicular, to that in which a second pair of facets
extend. The end face of each optical conductor is abutted against one
of the facets of the polyhedron. Each facet has a coating of a
material having a lower refractive index than that of the polyhedron
or the optical conductors. Light entering the polyhedron from one
conductor passes across the polyhedron and into the opposite
conductor, being constrained to stay within the polyhedron by the
coatings on the side facets. Preferably the polyhedron member is a
cube and the optical conductors are of square cross-sectional shape.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 1257494 was not found.
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Description | Date |
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Inactive: Expired (old Act Patent) latest possible expiry date | 2006-07-18 |
Letter Sent | 1999-07-22 |
Grant by Issuance | 1989-07-18 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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NORTEL NETWORKS LIMITED |
Past Owners on Record |
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DAVID A. KAHN |