发明授权
- 专利标题: Broad-bandwidth multimode optical fiber having reduced bending losses
- 专利标题(中): 具有减少弯曲损耗的宽带宽多模光纤
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申请号: US13037943申请日: 2011-03-01
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公开(公告)号: US08565568B2公开(公告)日: 2013-10-22
- 发明人: Marianne Bigot-Astruc , Denis Molin , Pierre Sillard
- 申请人: Marianne Bigot-Astruc , Denis Molin , Pierre Sillard
- 申请人地址: NL Amsterdam
- 专利权人: Draka Comteq, B.V.
- 当前专利权人: Draka Comteq, B.V.
- 当前专利权人地址: NL Amsterdam
- 代理机构: Additon, Higgins, Pendleton & Ashe, P.A.
- 优先权: FR1051489 20100302
- 主分类号: G02B6/036
- IPC分类号: G02B6/036
摘要:
A multimode optical fiber includes a central core, an inner cladding, a buried trench, and an outer cladding (e.g., an outer optical cladding). Typically, the optical fiber's central core is a glass-based central core having an alpha-index profile (i.e., a graded-index profile), an outer radius r1, and a maximum refractive index difference Δn1 with respect to the outer cladding. The central core's alpha-index profile has a minimum refractive index at the central core's outer radius r1 that corresponds to a refractive index difference Δnend with respect to the outer cladding. The inner cladding has an outer radius r2, a width w2, and a refractive index difference Δn2 with respect to the outer cladding. The buried trench has an outer radius rext, a width w3, and a refractive index difference Δn3 with respect to the outer cladding. The multimode optical fiber typically has reduced bending losses, a high bandwidth at wavelengths of both 850 nanometers and 1300 nanometers, and a reduced cladding effect.
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