Method of manufacturing an article comprising an opto-electronic

Details Method of manufacturing an article comprising an opto-electronic Method of manufacturing an article comprising an opto-electronic

1991-12-03

1993-06-08

Hearn, Brian E.

Fishing, trapping, and vermin destroying

437 54, 437905, 437209, 385 90, 385 94, H01L 2166

Patent

active

052179060

ABSTRACT:
The inventive method is advantageously used in the manufacture of an article that comprises an opto-electronic device (e.g., LED or photodetector diode) that has a substantially planar radiation-emitting or receiving (first) surface region. The method comprises preliminarily positioning the end of a length of optical fiber relative to the first surface region, and causing radiation from a radiation source to be emitted from the fiber end so as to be incident substantially normally on the first surface region. A part of the radiation is reflected, collected by the fiber end, and transmitted to a power meter. The output of the power meter (or a quantity derived therefrom) is compared to a pre-determined measurement value and, if indicated by the comparison, the position of the fiber end is adjusted. A significant aspect of the invention is the existence of an easily measured relationship between the reflected power received by the power meter and the distance .DELTA.z of the fiber end from the first surface region. The relationship is substantially the same for all devices of a given design, making possible automatization of .DELTA.z-positioning.

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patent: 5029965 (1991-07-01), Tan

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