| 摘要 |
<p>An improved device or tool is provided for cleaving angled ends on to at least one optical fiber (1) (FIG. 1) in which spring means (6) and co-operating pivotally mounted clamping blocks (7a, 7b) are employed to clamp and tension the optical fiber (1) with tension (T). A sharp corner edge (11) of an anvil (10) is used to locally deflect or displace the fiber (1) and bend it about the opposing sharp corner edge (12) of the clamping surface (5) of one of the clamping blocks (viz 7b) so that the fiber experiences a localized shear force. The resultant stress is a superposition of tension and shear and is directed away from the axis of the fiber (1). An acutely angled blade (13) is operable to score the fiber (1) at a point between the two opposing corners (11, 12). The fiber (1) cleaves with ends which are consistently angled at between 1° and 20° (preferably 5° to 10°) away from the perpendicular to the fiber axis. This end angle obtained depends upon the distance between the opposing corners (11, 12) and the deflection of the fiber (1) and the anvil (10) and the tension of the fiber (1), and is adjustable. The tool is capable of cleaving multiple arrangements of fibers in one operation such as fibers arranged in ribbon form. Other objects of glass or other brittle material similar to optical fibers can be cleaved by the tool. Several variations of the tool are described.</p> |
