Boots – shoes – and leggings
Patent
1985-12-23
1988-09-13
Sikes, William L.
Boots, shoes, and leggings
350 9614, 350 9616, 364713, 364822, 341137, G02B 610, H03M 100, G06F 756
Patent
active
047704837
ABSTRACT:
High speed integrated optic devices for sampling transient RF and microwave signals. A series of electrooptic couplers are spaced apart along an integrated-optic waveguide beneath a coplanar RF stripline. A traveling wave electrical signal propagetes on the RF stripline, generating an electric field across each coupler, and thus changing its coupling characteristics. A short optical pulse propagates in a direction opposite to the electrical signal, passing sequentially through the electro-optic couplers, and thus causing a small amount of light to couple into each one of a series of output waveguides and propagate on to an optical detector. The amount of coupled light is dependent on the local electric field induced by the electric signal. Each detector integrates the energy of the coupled optical pulse in its respective output waveguide, to determine the associated instantaneous amplitude of the electrical signal. The sampling rate is determined by the spatial distance between the electro-optic couplers and the velocities of the optical pulse and the electrical signal. Transient signals can be analyzed at rates in excess of 30 giga-samples per second.
Intensity-modulated optical signals can be sampled also, using a short electrical pulse. The main integrated-optical waveguide propagates the intensity modulated optical signal through the electro-optic couplers. A short electircal pulse propagates down the RF stripline in a direction opposite to the optical signal and, again, induces an electric field which changes the coupling characteristics of the couplers. The optical sampler can be integrated into an optical fiber communication system to provide a new means of detecting and analyzing optical signals.
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Battelle (Memorial Institute)
Dunson Philip M.
Healy Brian M.
Sikes William L.
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