B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
26/197, 88/97.3
B29D 11/00 (2006.01) B29D 12/00 (2006.01) G02B 6/38 (2006.01)
Patent
CA 1155282
ABSTRACT IMPROVEMENTS IN OR RELATING TO THE COUPLING OF DIELECTRIC OPTICAL WAVEGUIDES A pair of optical fibres which are to be joined are located with their end portions in coupling elements one of which is transparent to light. The coupling elements are located such that the ends of the fibres are in approximate alignment. Light is transmitted along one fibre so that it is received by the fibre is the transparent coupling element. Light which is not coupled into the core of the fibre is sensed by a sensor and the relative position of the fibres is adjusted until the level of sensed light is a minimum. The sensing of the light is carried out at positions spaced angularly about the waveguide so that an indication of the direction of any misalignment is obtained. The coupling elements are then secured in this position. The adjustment of the fibres can be carried out using a linear translation stage and a microprocessor which controls the stage in accordance with signals from the sensor.
365852
Millar Colin A.
Payne David B.
Reeve Michael H.
Post Office
Ridout & Maybee Llp
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