Patent · US Active

Method and apparatus for realizing tubular optical waveguides in glass by femtosecond laser direct writing

US10201874B2 · kind B2 · utility

0Cited by

2References

3Claims

0Family size

Assignee

Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences · CN

Inventors

Ya Cheng · Shanghai, CN
Yang Liao · Shanghai, CN
Wei-Cheng Chu · Tainan, TW
Peng Wang · Shandong, CN
Jia-yuan Qi · Shanghai, CN

Key dates

Filing date	Apr 11, 2016
Grant date	Feb 12, 2019
Priority date	—
Expiry date	Oct 18, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG02B2006/12038
WIPO fieldMachine tools
WIPO sectorMechanical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.