Apparatus for aligning an article relative to a datum
 Apparatus for aligning an article, for example an optical fiber, relative to a datum, for example a Vee groove, another fiber, or a light source, includes means for manipulating the article in two intersecting directions. The manipulating means comprises a part fixed relative to the datum and a first arm coupled to the fixed part by a hinge. A second arm is coupled by a second hinge to the first arm at a position adjacent the first hinge. Adjacent its proximal end, the second arm carries a mount for the fiber. The arrangement is such that pivoting of the first arm displaces the mount in one of the intersecting directions. Pivoting of the second arm displaces the mount in the other of the intersecting directions. Preferably, the fixed part, hinges and arms are integral with one another, substantially eliminating play and backlash. The apparatus affords precise manipulation of articles such as single-mode optical fibers prior to and during fusion splicing. Another aspect of the invention comprises an arrangement of two gripping jaws, one for each of two filaments, and two actuators, one for each gripping jaw, disposed either side of a medial plane through the apparatus. The right-hand actuator operates the left-hand jaw, and vice-versa. A third aspect comprises gripping means in the form of a tappet to distribute contact along the fiber, preferably pivotal slightly to ensure even contact with the fiber throughout the contact region. 
Bell-Northern Research Ltd.
G G Y G G
G02B G02B Y10S G02B G02B
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Grant K. Helmut H.
Pacey Lukas