Invention Grant
US08446589B2 Residual intensity modulation (RIM) control loop in a resonator fiber-optic gyroscope (RFOG)
有权
谐振器光纤陀螺仪（RFOG）中的残余强度调制（RIM）控制回路
- Patent Title: Residual intensity modulation (RIM) control loop in a resonator fiber-optic gyroscope (RFOG)
- Patent Title (中): 谐振器光纤陀螺仪（RFOG）中的残余强度调制（RIM）控制回路
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Application No.: US12581715Application Date: 2009-10-19
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Publication No.: US08446589B2Publication Date: 2013-05-21
- Inventor: Lee Strandjord , Glen A. Sanders , Tiequn Qiu
- Applicant: Lee Strandjord , Glen A. Sanders , Tiequn Qiu
- Applicant Address: US NJ Morristown
- Assignee: Honeywell International Inc.
- Current Assignee: Honeywell International Inc.
- Current Assignee Address: US NJ Morristown
- Agency: Fogg & Powers LLC
- Main IPC: G01C19/72
- IPC: G01C19/72
Abstract:
Systems and methods for reducing intensity modulation-induced rotation rate measurement error in a resonator optical gyroscope. The method includes tapping an intensity modulated light beam, directing a portion of the tapped light beam toward a photo detector, outputting from the photo detector a signal proportional to the amplitude variation of the light beam, amplifying the signal, and then providing the signal to the intensity modulator as a control input. Intensity modulation-induced error is reduced by an amount proportional to the gain of the feedback loop.
Public/Granted literature
- US20100225923A1 RESIDUAL INTENSITY MODULATION (RIM) CONTROL LOOP IN A RESONATOR FIBER-OPTIC GYROSCOPE (RFOG) Public/Granted day:2010-09-09
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