ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,949, issued on Oct. 27, was assigned to FENG CHIA UNIVERSITY (Taichung City, Taiwan).
"D-shaped optical fiber gas sensor" was invented by Chuen-Lin Tien (Taichung City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "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 w...