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:
Jan. 30, 2024
Filed:
Apr. 14, 2020
Exail, Saint-Germain-en-Laye, FR;
Eric Ducloux, Saint-Germain-en-Laye, FR;
Cédric Molucon, Saint-Germain-en-Laye, FR;
Hervè Lefevre, Saint-Germain-en-Laye, FR;
EXAIL, Saint-Germain-en-Laye, FR;
Abstract
A fiber-optic interferometer is designed to receive and propagate a first single-mode wave along a first optical path and, respectively, a second single-mode wave along a second optical path, the second optical path being the reverse of the first optical path, and to form a first output wave and, respectively, a second output wave, having a modulated phase difference Δϕ(t). According to the invention, the modulated phase difference Δϕ(t) is equal to sum of a first periodic phase difference Δϕ(t) having a level equal to ±π, a second periodic phase difference Δϕ(t) having a level equal to ±alpha and a third periodic phase difference Δϕ(t) having a variable level between −beta and +beta, said modulated phase difference Δϕ(t) comprising per modulation period T at least eight modulation levels among twelve modulation levels and said modulated phase difference between such that: Δϕ(t+T/)=−Δϕ(t).