Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1985-11-12
1987-07-14
Lee, John
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156155, 350 9620, G02B 642
Patent
active
046799087
ABSTRACT:
To position a light output device such as a laser diode relative to a light input device such as a waveguide so as to obtain maximum coupling of light, light is launched into one end of the fiber and is detected at a remote part of the fiber where a corresponding electrical signal is generated. Positional information contained in the signal is used to reduce misalignment between the waveguide and laser by manipulating a positioner attached to the fiber. Since there is usually some slight movement of the fiber as an anchoring epoxy bead cures, it is necessary to move the fiber within the curing epoxy and it is advantageous if the position at which the positioner contacts the fiber is at the same site as the epoxy bead. By the invention, the positioner is attached to the fiber using a wax or similar material so that as the epoxy cures, it does not cure in contact with the positioner. When the epoxy is fully cured, the wax is melted and the positioner withdrawn.
REFERENCES:
patent: 4237474 (1980-12-01), Ladany
patent: 4296998 (1981-10-01), Dufft
patent: 4469399 (1984-09-01), Cowen et al.
patent: 4523802 (1985-06-01), Sakaguchi et al.
Bailey et al, "Method and Apparatus to Align and Affix an Optical Fiber . . . ", Xerox Discl. Journ., vol. 4, No. 3, May/Jun. 1979, pp. 387-388.
Lee John
Mowle John E.
Northern Telecom Limited
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