Coupling of dielectric optical waveguides

Details Coupling of dielectric optical waveguides Coupling of dielectric optical waveguides

1980-11-28

1984-06-05

Lee, John D.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250227, 350 9615, G02B 726

Patent

active

044525060

ABSTRACT:
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 in 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.

REFERENCES:
patent: 3593026 (1971-07-01), Uchida et al.
patent: 3938895 (1976-02-01), Bridger et al.
patent: 4188087 (1980-02-01), D'Auria et al.
patent: 4303302 (1981-12-01), Ramsey et al.
patent: 4329659 (1982-05-01), Chen
Althammer, "Fully Automatic System for the Coupling Alignment of Optical Fibres," Optical and Quantum Electronics, vol. 9, 1977, pp. 393-397.

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