FIELD: physics.
SUBSTANCE: invention can be used when designing fibre-optic gyroscopes and other physical quantity sensors based on single-mode lightguides. At the input of the optical integrated circuit (OIC) of the ring interferometer of a fibre-optic gyroscope, comprising a Y optical beam splitter based on polarising channel waveguides and two phase modulators, there is a further section which polarises linearly polarised radiation while ensuring minimum heating of the OIC wafer.
EFFECT: improved circuit.
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|---|---|---|---|
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|
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|
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