Picosecond optical sampling
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United States of America Patent
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Mar 19, 1985
Grant Date -
N/A
app pub date -
Aug 14, 1981
filing date -
Aug 14, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A high speed sampling technique is proposed using a cascade of optical waveguide interferometers driven by CW sinusoidal traveling or standing microwaves. Each interferometer multiplies the optical signal by a function closely approximated by cos.sup.4 .omega.t, where .omega. is the frequency of its microwave drive. A cascade of four interferometers with 2.6 V microwave drives at 10, 20, 40, and 80 GHz and a total length of 2 cm can sample an optical signal with 2 ps resolution and 50 ps between samples.
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