发明名称 |
RADIATION INSENSITIVE FIBER LIGHT SOURCE FOR INTERFEROMETRIC FIBER OPTIC GYROSCOPES (IFOGS) |
摘要 |
<p>A new apparatus and method designed to protect an interferometric fiber optic light source from weapons level radiation threat is provided. A fiber optic light source is configured to produce a light spectrum which has a mean wavelength which is substantially unaffected when exposed to weapon's level radiation threat. The fiber optic light source is configured to produce a light output with a mean wavelength in the range of 1520 nm to 1540 nm, and is preferably configured to produce a light output with mean wavelength of about 1532 nm. The fiber optic light comprises a pump laser and a length of doped fiber optic material through which light from the pump laser is directed. The length of fiber optic material has a configuration which produces a light output with a predetermined spectrum and mean wavelength. The length of fiber optic material will depend on the specific properties of the fiber, but with the preferred material, i.e. a length of Erbium Doped Fiber, the length of fiber would be in the range of about 8 to 15 meters, and preferably in the range of about 6 to 12 meters. In the practice of the present invention, light is generated in a wavelength useful in interferometric fiber optic gyroscope, by generating light in a predetermined wavelength range, filtering the light to produce the light in a wavelength range in which it is substantially unaffected by weapons level radiation threat, and directing the filtered light to an interferometric fiber optic gyroscope.</p> |
申请公布号 |
EP1444484(A1) |
申请公布日期 |
2004.08.11 |
申请号 |
EP20020789580 |
申请日期 |
2002.11.12 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
ANG, DICK;LIU, REN-YOUNG;SPICER, TIMOTHY, L. |
分类号 |
G01C19/72;H01S3/067;(IPC1-7):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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