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.

Date of Patent:
Oct. 27, 2026

Filed:

Dec. 19, 2024
Applicant:

Feng Chia University, Taichung City, TW;

Inventor:

Chuen-Lin Tien, Taichung City, TW;

Assignee:

FENG CHIA UNIVERSITY, Taichung City, TW;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/31 (2006.01); G01N 33/00 (2006.01);
U.S. Cl.
CPC ...
G01N 21/31 (2013.01); G01N 33/0027 (2013.01); G01N 2201/08 (2013.01);
Abstract

A D-shaped optical fiber gas sensor comprises an optical fiber, a light source emitter connected with one terminal of the optical fiber, a spectrometer connected with the other terminal of the optical fiber, and a computer electrically connected with the spectrometer. The optical fiber is coated with a film with multiple gaps. When molecules of an under-test gas enter the multiple gaps of the film, a refractive index of the film will change. Lossy Mode Resonance arises in the film by a light emitted through the light source emitter, so that a light intensity of the light received by the spectrometer changes accordingly. The computer receives a light intensity detection value outputted by the spectrometer, and computes a gas detection concentration of the under-test gas that is corresponding to the light intensity detection value according to a linear model.


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Tien, Chuen-Lin. (2026). D-shaped optical fiber gas sensor (U.S. Patent No. 12774949). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12774949

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