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:
May. 15, 1990
Filed:
Sep. 29, 1988
Marko Erman, Paris, FR;
Remi Gamonal, Brunoy, FR;
U.S. Philips Corp., New York, NY (US);
Abstract
An optical switching element including two optical guides constituted by linear parallel strips coupled through a distance d and made of semiconductor material having an index n.sub.1 on a semiconductor substrate having an index n.sub.o <n.sub.1 and provided with electrodes E.sub.ii to carry out the switching of the light from one guide to the other, characterized in that the first guide G.sub.ii is connected on the one hand to an input IN.sub.i and on the other hand to a direct output I'.sub.i of the switching element, and in that the second guide H.sub.ii is provided beyond the zone of the electrodes E.sub.ii with a flat mirror M.sub.ii at 45.degree. with respect to its optical axis, which reflects the light into a guide H'.sub.ii perpendicular to H.sub.ii, in that H'.sub.ii is coupled through a distance d to a guide G'.sub.ii, the guides H'.sub.ii and G'.sub.ii being provided with electrodes E'.sub.ii to direct the light towards the output O.sub. i of the guide G'.sub.ii, and in that the systems of the guides G.sub.ii, H.sub.ii, H'.sub.ii, G'.sub.ii are covered by a planar confinement layer of a semiconductor material except the region Q.sub.ii of the mirror M.sub.ii. Application: switching matrix for telecommunication purposes.