Title:
OPTICAL FIBER AND OPTICAL FIBER GRATING
Document Type and Number:
WIPO Patent Application WO/2019/177114
Kind Code:
A1
Abstract:
An optical fiber according to an embodiment of the present invention is provided with: a core having a single-peak, graded-refractive-index profile; an inner cladding surrounding the core; and an outer cladding surrounding the inner cladding. The inner cladding and the outer cladding have refractive indices lower than the maximum refractive index of the core. A photosensitive region formed of the core and the inner cladding contains a photosensitive material. The inner cladding has an outer diameter in a range of 1-2 times the MFD in the LP01 mode in a wavelength band around 1310 nm.
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Inventors:
NAGANO SHIGEHIRO (JP)
SHIGEHARA MASAKAZU (JP)
YAMAZAKI MASAYUKI (JP)
SHIGEHARA MASAKAZU (JP)
YAMAZAKI MASAYUKI (JP)
Application Number:
PCT/JP2019/010628
Publication Date:
September 19, 2019
Filing Date:
March 14, 2019
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
SEI OPTIFRONTIER CO LTD (JP)
SEI OPTIFRONTIER CO LTD (JP)
International Classes:
G02B6/036; G02B6/02; G02B6/028
Foreign References:
| JP2014526066A | 2014-10-02 | |||
| JPS5288349A | 1977-07-23 | |||
| JP2000503414A | 2000-03-21 | |||
| JP2003322735A | 2003-11-14 | |||
| US7526160B1 | 2009-04-28 | |||
| JP2018049018A | 2018-03-29 | |||
| JP2003004926A | 2003-01-08 | |||
| JPH01119041A | 1989-05-11 | |||
| JPH11326672A | 1999-11-26 | |||
| JP2001183535A | 2001-07-06 |
Other References:
D.L. WILLIAMS ET AL.: "ENHANCED UV PHOTOSENSITIVITY IN BORON CODOPED GERMANOSILICATE FIBERS", ELECTRONICS LETTERS, vol. 29, no. 1, 7 January 1993 (1993-01-07), pages 45 - 47, XP000403909
JUNJI NISHII ET AL.: "Ultraviolet-radiation-induced chemical reactions through one- and two-photon absorption process in Ge0 -Si0 glasses", OPTICS LETTERS, vol. 20, no. 10, 15 May 1995 (1995-05-15), pages 1184 - 1186
"Effect of Diffracted Light on Grating Characteristics in Phase Mask Method", ENGINEERING SCIENCES SOCIETY CONFERENCE OF IEICE, vol. C-3-26, 2000, pages 151
JUNJI NISHII ET AL.: "Ultraviolet-radiation-induced chemical reactions through one- and two-photon absorption process in Ge0 -Si0 glasses", OPTICS LETTERS, vol. 20, no. 10, 15 May 1995 (1995-05-15), pages 1184 - 1186
"Effect of Diffracted Light on Grating Characteristics in Phase Mask Method", ENGINEERING SCIENCES SOCIETY CONFERENCE OF IEICE, vol. C-3-26, 2000, pages 151
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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