| 摘要 |
<p>An optical fiber (1) is proposed which comprises
- an elongate fiber portion (2) and
- a broadened coupling portion (3) arranged at an axial end of the elongate fiber portion (2) for coupling light into and/or out of the optical fiber (1);
- wherein the broadened coupling portion (3) has an outer contour at least comprising a first surface (4) and a second surface (7),
- wherein the first surface (4) comprises a first surface portion (5) being curved in two directions and having a center (6) of curvature,
- wherein the second surface (7) is oriented such as to cause total internal reflexion of light transmitted or to be transmitted via the optical fiber (1) and
- wherein the second surface (7) is positioned outside the center (6) of curvature of the first surface portion (5).</p> |
