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. 13, 2025
Filed:
Nov. 16, 2022
Lionix International Bv, Enschede, NL;
René Gerrit Heideman, Oldenzaal, NL;
Arnoud Sebastiaan Everhardt, Enschede, NL;
Jörn Philipp Epping, Münster, DE;
Erik Schreuder, Rijssen, NL;
Thi Lan Anh Tran, Enschede, NL;
LioniX International BV, Enschede, NL;
Abstract
The present Specification is directed to devices for controlling the phase of a light signal in a surface waveguide of a planar-lightwave circuit by controlling a stress in the waveguide material. Phase controllers disclosed can impart stresses of opposite signs in a material such that a desired effect on the refractive index of an optical material can be accentuated. As a result, a greater change in the refractive index of the material can be realized in a phase controller that requires less chip real estate and/or at lower voltages. In some embodiments, a phase-control module includes a pair of complimentary stress-optic phase controllers, one having electrodes disposed on the top and bottom of a piezoelectric layer, while the other has electrodes disposed only on top of the piezoelectric layer. As a result, the phase controllers impart stress of opposite sign in the material beneath them.