Patent · US Active

Attenuator photonic circuit with vertical interferometric structure

US11409181B2 · kind B2 · utility

0Cited by

2References

13Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Daivid Fowler · Grenoble, FR
Thomas Mang · Holzkirchen, DE
Basile Meynard · Grenoble, FR

Key dates

Filing date	Dec 2, 2020
Grant date	Aug 9, 2022
Priority date	—
Expiry date	Dec 2, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02F2203/50
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a photonic circuit for attenuating the amplitude of an optical signal, comprising a Mach-Zehnder interferometer for coupling an input waveguide (14) and an output waveguide (15), said interferometer comprising a modulation section (SM1) which includes a first waveguide (11), a second waveguide (12) and a phase shifter (13) configured to introduce a phase difference between a first optical signal circulating on the first waveguide and a second optical signal circulating on the second waveguide.The first and second waveguides are arranged in two distinct parallel layers and the phase shifter is a thermo-optical phase shifter arranged to preferentially act on one of the first and second waveguides.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.