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:
Aug. 18, 2020
Filed:
Jul. 24, 2019
Teraxion Inc., Québec, CA;
André Babin, Québec, CA;
TeraXion Inc., Québec, CA;
Abstract
An optical phase modulation device for modulating a phase of an input light signal at a modulation frequency is provided, which can be used in integrated photonics applications. The device can include an optical phase modulator, for example a thermo-optic phase shifter having an effective refractive index that depends linearly temperature, configured to impart a phase shift to the input light signal, the phase shift varying quadratically in response to an applied modulating electric drive signal. The device can also include a phase modulator driver configured to apply the electric drive signal to the optical phase modulator, the electric drive signal having a time-varying component oscillating at half the modulation frequency and no time-constant component, thereby imparting the phase shift, modulated at the modulation frequency, to the phase of the input light signal to produce a phase-modulated light signal. Optical phase modulation systems and methods are also disclosed.