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US 2013/0083327 A1Published application
MEMS based Ring Laser Gyroscope with Reduced Lock-in
AssigneesKing Abdulaziz City for Science and Technology, Si-Ware Systems
InventorsDiaa A.M. Khalil, Khaled Hassan Mohamed Ahmed, Ahmed Saeed Shebl Salem, Mrwan Alayed, Fahad Aljekhedab
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Abstract
A ring laser gyroscope (RLG) includes moveable minors and a Micro-Electro-Mechanical Systems (MEMS) actuator coupled to the moveable minors 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.
Claims20
A ring laser gyroscope, comprising:
- an active gain medium for generating first and second light beams;
- a closed optical path through which the first and second light beams counter-propagate;
- first and second moveable minors within the closed optical path;
- and
- a Micro-Electro-Mechanical Systems (MEMS) actuator coupled to the first and second moveable minors to cause a respective displacement thereof that induces a phase modulation on the first and second light beams relative to one another, thereby creating an optical path difference between the first and second light beams corresponding to a virtual rotation to reduce the lock-in.
2 more elements
Dependencies are inferred from the claim text.