MEMS based ring laser gyroscope with reduced lock-in

MEMS based ring laser gyroscope with reduced lock-in

A ring laser gyroscope (RLG) includes moveable mirrors and a Micro-Electro- Mechanical Systems (MEMS) actuator coupled to the moveable mirrors to cause a respective displacement thereof that induces a phase modulation on counter-propagating light beams relative to one another. The induced phase modu...

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Bibliographische Detailangaben
Hauptverfasser: SHEBL SALEM AHMED SAEED, MOHAMED AHMED KHALED HASSAN, ALJEKHEDAB FAHAD, ALAYED MRWAN, KHALIL DIAA A M
Format: Patent
Sprache:chi ; eng
Schlagworte:
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Beschreibung
Zusammenfassung:A ring laser gyroscope (RLG) includes moveable mirrors and a Micro-Electro- Mechanical Systems (MEMS) actuator coupled to the moveable mirrors to cause a respective displacement thereof that induces a phase modulation on counter-propagating light beams relative to one another. The induced phase modulation creates an optical path difference between the counter-propagating light beams corresponding to a virtual rotation that reduces the lock-in of the RLG.