发明名称 |
OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM |
摘要 |
<p>An inexpensive low-attenuation optical fiber 1 suitable for use as an optical transmission line in an optical access network is a silica based glass optical fiber and includes a core 11 including the center axis, an optical cladding 12 surrounding the core, and a jacket 13 surrounding the optical cladding. The core contains GeO 2 and has a relative refractive index difference ”core, based on the optical cladding, greater than or equal to 0.35% and less than or equal to 0.50% and has a refractive index volume v greater than or equal to 0.045 µm 2 and less than or equal to 0.095 µm 2 . The jacket has a relative refractive index difference ”J greater than or equal to 0.03% and less than or equal to 0.20%. Glass constituting the core has a fictive temperature higher than or equal to 1400°C and lower than or equal to 1590°C. Residual stress in the core is compressive stress that has an absolute value greater than or equal to 5 MPa.</p> |
申请公布号 |
EP2781941(A1) |
申请公布日期 |
2014.09.24 |
申请号 |
EP20120850722 |
申请日期 |
2012.10.25 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
NAKANISHI, TETSUYA;KONISHI, TATSUYA;KUWAHARA, KAZUYA |
分类号 |
G02B6/02;C03B37/027;C03B37/075;G02B6/00;G02B6/036;G02B6/44 |
主分类号 |
G02B6/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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