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. 31, 2013
Filed:
Mar. 17, 2008
Markku Rajala, Vantaa, FI;
Mircea Hotoleanu, Cluj-Naposa, RO;
Per Stenius, Espoo, FI;
Harri Valkonen, Rühimaki, FI;
Simo Tammela, Espoo, FI;
Pauli Kiiveri, Kirkkonummi, FI;
Markku Rajala, Vantaa, FI;
Mircea Hotoleanu, Cluj-Naposa, RO;
Per Stenius, Espoo, FI;
Harri Valkonen, Rühimaki, FI;
Simo Tammela, Espoo, FI;
Pauli Kiiveri, Kirkkonummi, FI;
nLight Oy, Lohja, FI;
Abstract
An optical waveguide including a core, a buffer surrounding the core, and a cladding surrounding the buffer. The core, the buffer and the cladding include silica glass. A refractive index of the buffer is substantially equal to a refractive index of pure amorphous silica glass. The buffer may reduce bubble formation during manufacturing and may facilitate splicing of the waveguide. A numerical aperture of the waveguide may be fine-tuned by adjusting a radial dimension of the buffer in order to compensate variations in the refractive index of the core.