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. 14, 2023
Filed:
Oct. 09, 2019
Universitat Politécnica DE Valencia, Valencia, ES;
Daniel Perez Lopez, Valencia, ES;
José Capmany Francoy, Valencia, ES;
Ivana Gasulla Mestre, Valencia, ES;
Erica Sánchez Gomáriz, Valencia, ES;
UNIVERSITAT POLITÈCNICA DE VALÈNCIA, Valencia, ES;
Abstract
The present invention discloses a directional photonic coupler () with independent tuning of the coupling factor and phase difference. The coupler comprises: two waveguides (), with respective propagation constants 'β, β', on which phase shifters () configured to modify the propagation coefficients are located. Both phase shifters are configured such that, by independent modification (differential or unique) of the propagation coefficients, the power coupling factor (K) between an input signal (or) and the output signals (and) is tuned, and by equal and simultaneous modification of the propagation coefficients, the common phase difference of the optical output signals () is tuned. A third phase shifter () can be used to retune the phase difference at the input/output of one of the waveguides. The coupler is of particular interest in PIC circuits, coupled resonators, Mach-Zehnder interferometers and mesh structures.