Positioning system for controlling optical alignment of optical

Details Positioning system for controlling optical alignment of optical Positioning system for controlling optical alignment of optical

1996-07-19

1998-03-10

Ullah, Akm E.

Optical waveguides

With optical coupler

With alignment device

385 16, 385 19, 385140, G02B 626

Patent

active

057270996

ABSTRACT:
A positioning system is provided for controlling the optical alignment of optical waveguides. At least one optical waveguide is mounted to a first displaceable terminus and an opposite waveguide is mounted to a second terminus. A force can be applied to one of the termini so as to cause an essentially lateral (radial, pivotal etc.) misaligning movement of the end portion of the respective optical waveguide relative to the end portion of the opposite waveguide mounted to a second terminus, the end portions being separated by an air gap. The force required to move the displaceable terminus is provided by a first elastic member having a relatively low stiffness, such as a spring with a low spring constant. When exerted, the force is counteracted by a second elastic member, such as a spring having a higher stiffness, or spring constant, than the first elastic member. In an embodiment of the invention, the displaceable terminus may itself form a resilient member to which the first elastic member is connected for exerting the displacement force. When a large stiffness ratio between the elastic members is selected, it is possible to attain a very precise alignment control of the opposite optical waveguides by reducing the movement of relatively simple actuators such as hand-operated levers or lead-nut and lead-screw combinations into considerably finer movements of the displaceable terminus with the concomitant misalignment of the respective optical waveguide.

REFERENCES:
patent: 4645294 (1987-02-01), Oguey et al.
patent: 4878730 (1989-11-01), Wall
patent: 5016978 (1991-05-01), Fargette et al.
patent: 5066094 (1991-11-01), Takahashi
patent: 5239599 (1993-08-01), Harman
patent: 5422725 (1995-06-01), Vilhelmsson
patent: 5606635 (1997-02-01), Haake

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