Title:
光ファイバ
Document Type and Number:
Japanese Patent JP4211194
Kind Code:
B2
Abstract:
In an optical fiber 1 having a core region 3 and a cladding region 5 which surrounds the core region 3, wherein a plurality of regions made of sub mediums 2 having refractive index different from that of the main medium 4 constituting the cladding region 5 are spaced apart in cross section of the cladding region 5 and the mean refractive index of the core region 3 is lower than that of the cladding region 5, the sub-medium regions 2 are regularly arranged in the radial direction of the optical fiber 1 such that the light having given wavelength, propagation coefficient and electric field distribution propagates along the fiber axis and has not less than 50 % of a total propagating power in the core region 3, and this arrangement does not have translational symmetry in cross section.
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Inventors:
Takemi Hasegawa
Masayuki Nishimura
Eisuke Sasaoka
Masayuki Nishimura
Eisuke Sasaoka
Application Number:
JP2000142119A
Publication Date:
January 21, 2009
Filing Date:
May 15, 2000
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
G02B6/00; G02B6/032; G02B6/02; G02B6/036; G02B6/34; H01S3/06; G02B6/26
Domestic Patent References:
| JP10095628A |
Foreign References:
| WO2001063328A1 | ||||
| EP0621496A1 | ||||
| US4139262 | ||||
| US5742722 | ||||
| US5448674 |
Other References:
J. Marcou, Ph. Roy,Monomode photonic band gap fibers for dispersion shifting towards short wavelengths,ECOC '99,1999年 9月26日,Vol. 1,p. 24 - 25
Yoel Fink, Daniel J. Ripin, Shanhui Fan, Chiping Chen, John D. Joannopoulos, and Edwin L. Thomas,Guiding Optical Light in Air Using an All-Dielectric Structure,JOURNAL OF LIGHTWAVE TECHNOLOGY,1999年11月,Vol. 17, No. 11,p. 2039 - 2041
R. F. Cregan, B. J. Mangan, J. C. Knight, T. A. Birks, P. St. J. Russell, P. J. Roberts, and D. C. Allan,Single-Mode Photonic Band Gap Guidance of Light in Air,Science,1999年 9月 3日,Vol. 285, No. 5433,p. 1537 - 1539
T. A. Birks, J. C. Knight, and P. St. J. Russell,Endlessly single-mode photonic crystal fiber,OPTICS LETTERS,1997年 7月,Vol. 22, No. 13,p. 961 - 963
Yoel Fink, Daniel J. Ripin, Shanhui Fan, Chiping Chen, John D. Joannopoulos, and Edwin L. Thomas,Guiding Optical Light in Air Using an All-Dielectric Structure,JOURNAL OF LIGHTWAVE TECHNOLOGY,1999年11月,Vol. 17, No. 11,p. 2039 - 2041
R. F. Cregan, B. J. Mangan, J. C. Knight, T. A. Birks, P. St. J. Russell, P. J. Roberts, and D. C. Allan,Single-Mode Photonic Band Gap Guidance of Light in Air,Science,1999年 9月 3日,Vol. 285, No. 5433,p. 1537 - 1539
T. A. Birks, J. C. Knight, and P. St. J. Russell,Endlessly single-mode photonic crystal fiber,OPTICS LETTERS,1997年 7月,Vol. 22, No. 13,p. 961 - 963
Attorney, Agent or Firm:
Yoshiki Hasegawa
Tatsuya Shioda
Shiro Terasaki
Masatoshi Shibata
Takeo Fukuchi
Tatsuya Shioda
Shiro Terasaki
Masatoshi Shibata
Takeo Fukuchi