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:
Dec. 10, 2019
Filed:
Oct. 19, 2018
Polskie Centrum Fotoniki I Śwaitłowodów, Lublin, PL;
Łukasz Szostkiewicz, Torun, PL;
Małgorzata Kuklińska, Lublin, PL;
Marek Napierała, Warsaw, PL;
Tomasz Nasiłowski, Warsaw, PL;
Łukasz Ostrowski, Nieporet, PL;
Anna Pytel, Warsaw, PL;
Michał Szymański, Warsaw, PL;
Karol Wysokiński, Gdynia, PL;
Anna Mąkowska, Kielce, PL;
Michał Murawski, Warsaw, PL;
Tadeusz Tenderenda, Warsaw, PL;
Beata Bieńkowska, Warsaw, PL;
Other;
Abstract
A device for selectively increasing higher-order mode losses comprises an optical fiber taper executed on a multi-mode fiber of a selected wavelength, and the fiber taper has separated regions, i.e. non-tapered fiber regions which have a first diameter equal to that of the main fiber. The tapered regions can also include transition regions in which the fiber diameter is reduced/increased, respectively, and a taper waist region which has a reduced diameter, where the taper level ratio between the regular diameter and the narrowed diameter is at least 20%, and the length of the transition regions are at least 0.5 mm on one side and may be zero on the other side, and the length of the taper waist with the narrower diameter is at least 0.5 mm. Furthermore, the taper area is coated with a filtering substance with attenuating properties between the tapered section and the cladding.