MEMS based ring laser gyroscope with reduced lock-in
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United States of America Patent
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Feb 21, 2017
Grant Date -
Apr 4, 2013
app pub date -
Sep 28, 2012
filing date -
Sep 29, 2011
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Abstract
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.
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