发明名称 |
Constant optical power sensor using a light source current servo combined with digital demodulation intensity suppression for radiation and vibration insensitivity in a fiber optic gyroscope |
摘要 |
Systems and methods for fiber-optic gyroscopes are provided. In one embodiment, a fiber-optic gyroscope comprises: a light source current servo coupled to a light source that transmits light through an optic path, wherein the light source current servo controls intensity of light through the optic path via a light source current drive that supplies current to power the light source; and an intensity control signal processor coupled to the optic path via a photo detector, wherein the intensity control signal processor outputs an intensity control signal to the light source current servo, wherein the intensity control signal is a function of intensity of light as received at the photo detector; wherein the light source current servo compares the intensity control signal against a stable analog voltage reference to adjust the light source current drive and drive optical power at the photo detector towards a constant level. |
申请公布号 |
US8213018(B2) |
申请公布日期 |
2012.07.03 |
申请号 |
US20100943352 |
申请日期 |
2010.11.10 |
申请人 |
SMITH DOUGLAS E.;SANDERS STEVEN J.;MEAD DEREK;HONEYWELL INTERNATIONAL INC. |
发明人 |
SMITH DOUGLAS E.;SANDERS STEVEN J.;MEAD DEREK |
分类号 |
G01C19/72 |
主分类号 |
G01C19/72 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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