Title:
POLARIZATION MAINTAINING OPTICAL FIBER AND METHOD FOR MANUFACTURING POLARIZATION MAINTAINING OPTICAL FIBER
Document Type and Number:
WIPO Patent Application WO/2024/053252
Kind Code:
A1
Abstract:
One embodiment of the present disclosure provides a polarization maintaining optical fiber having an easy-to-manufacture structure for making it possible to reduce a bending loss when bent into a small radius. A polarization maintaining optical fiber of the present disclosure comprises: a core that extends along a fiber axis; a pair of stress application portions; one or more low refractive index portions; and a common cladding that surrounds the core, the stress application portions, and the low refractive index portions. On the cross-section of the polarization maintaining optical fiber, the common cladding is disposed between the stress application portions and the core, the stress application portions are disposed on both sides of the core in a state of being away from the core, the common cladding is disposed between the low refractive index portions, the low refractive index portions are disposed away from each other, the common cladding is disposed between the low refractive index portions and the core, the common cladding is disposed between the low refractive index portions and the stress application portions, and the low refractive index portions are disposed around the core in a state of being away from both of the core and the stress application portions.
Inventors:
KITAO HARUKI (JP)
NAKANISHI TETSUYA (JP)
TOYOKAWA SHUHEI (JP)
NAKANISHI TETSUYA (JP)
TOYOKAWA SHUHEI (JP)
Application Number:
PCT/JP2023/026095
Publication Date:
March 14, 2024
Filing Date:
July 14, 2023
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
G02B6/024; C03B37/012; C03B37/027; G02B6/02; G02B6/036
Domestic Patent References:
| WO2008126472A1 | 2008-10-23 | |||
| WO2012046696A1 | 2012-04-12 |
Foreign References:
| JP2017503189A | 2017-01-26 | |||
| JP2015184371A | 2015-10-22 | |||
| JP2011170061A | 2011-09-01 | |||
| JPS636507A | 1988-01-12 | |||
| JP2011503636A | 2011-01-27 | |||
| US20060291789A1 | 2006-12-28 | |||
| JP2007108642A | 2007-04-26 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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