The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 1999
Filed:
Jun. 27, 1997
Jean-Emmanuel Broquin, Grenoble, FR;
Roger Rimet, Saint Martin D'Heres, FR;
Schneider Electric SA, , FR;
Abstract
The device integrates on the same glass substrate a passive monomode guide achieved by ion exchange in the substrate and an active monomode guide with lateral confinement by the substrate formed by an active thin layer deposited on the substrate and covering a zone in the form of a channel achieved by ion exchange in the substrate. The passive monomode guide constitutes the extension of the zone in the form of a channel of the active guide. The thin layer comprises a transition zone enabling adiabatic passage of the light from the passive guide to the active guide and vice-versa. The transition zone can be formed by an edge of the layer cutting the axis of the zone in the form of a channel obliquely or by a zone of variable thickness of the thin layer.