Edge illuminated photodetector with optical fiber alignment
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United States of America Patent
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-
Jul 1, 1980
Grant Date -
N/A
app pub date -
Jan 2, 1979
filing date -
Jan 2, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A silicon photodetector capable of long wavelength response which includes means for aligning an optical fiber for edge illumination. The detector is formed in a silicon body (11 and 12) with major surfaces lying in the (110) plane. A groove (23) is etched in the body adjacent the detector to produce sidewalls (24) and an end wall (25) lying in (111) planes. The sidewalls form a v-shaped groove with a depth precisely determined by the width of the groove so that an optical fiber (26) placed in the groove is vertically aligned with the detector. The end wall is perpendicular to the surface of the body so that light from the fiber is not refracted from the plane of the detector.
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