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US 4,728,191 AGranted
Divided interferometer employing a single 3.times.3 coupler/splitter
AssigneeOptical Technologies, Inc.
InventorClarence J. Zarobila
Life of this patent
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Abstract
Fiberoptic sensors are disclosed employing one, two, or more optical fibers which are connected to a single source of coherent light through a single 3.times.3 coupler/splitter thereby retaining a larger portion of the coherent light in the system.
Claims4
A fiber optic sensor comprising a source of coherent light, at least one fiber optic sensor interferometer;
- means connecting the coherent light to said at least one sensor, said connecting means including a single 3.times.3 C/S;
- a demodulator fiber optic interferometer, means connecting said coherent light to the demodulator interferometer, said connecting means including said 3.times.3 C/S, a first optical detector for said sensor interferometer connected through said 3.times.3 C/S, a second optical detector for the demodulator interferometer connected through said 3.times.3 C/S.
Dependencies are inferred from the claim text.