发明授权
US06776537B2 Light source-optical fiber coupler 失效
光源光纤耦合器

  • 专利标题: Light source-optical fiber coupler
  • 专利标题(中): 光源光纤耦合器
  • 申请号: US09983395
    申请日: 2001-10-24
  • 公开(公告)号: US06776537B2
    公开(公告)日: 2004-08-17
  • 发明人: Minoru Toyama
  • 申请人: Minoru Toyama
  • 优先权: JPP2000-326471 20001026
  • 主分类号: G02B642
  • IPC分类号: G02B642
Light source-optical fiber coupler
摘要:
A light source-optical fiber coupler using a gradient index rod lens 12 by which a diffused luminous flux emitted from a light source (for example, a semiconductor laser 10) is coupled onto an end surface of an optical fiber (for example, a single-mode optical fiber 14). The gradient index rod lens has a planar end surface facing the light source, and a convex spherical end surface facing the optical fiber. The gradient index rod lens has a light source side numerical aperture NA2 in a range of from 0.40 to 0.75, an effective lens radius r0 in a range of from 0.3 to 1.0 mm, and a spherical curvature radius R1 in a range of from 1.2 to 2.0 mm.
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