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:
Feb. 12, 2019
Filed:
Apr. 11, 2016
Applicant:
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, CN;
Inventors:
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B23K 26/0622 (2014.01); B23K 26/53 (2014.01); B23K 26/06 (2014.01); B23K 26/00 (2014.01); G02B 6/13 (2006.01); C03C 23/00 (2006.01); G02B 6/00 (2006.01); B23K 103/00 (2006.01);
U.S. Cl.
CPC ...
B23K 26/0624 (2015.10); B23K 26/0006 (2013.01); B23K 26/0643 (2013.01); B23K 26/0648 (2013.01); B23K 26/53 (2015.10); C03C 23/0025 (2013.01); G02B 6/00 (2013.01); G02B 6/13 (2013.01); B23K 2103/54 (2018.08);
Abstract
Apparatus and method for realizing tubular optical waveguides in glass by femtosecond laser direct writing. Irradiation in glass with focused femtosecond laser pulses leads to decrease of refractive index in the modified region. Tubular optical waveguides of variable mode areas are fabricated by forming the four sides of the modified regions with slit-shaped femtosecond laser pulses, ensuring single mode waveguide with a mode field dimension compatible with direct coupling to single-mode optical fibers.