公开(公告)号：JP2000036630A

公开(公告)日：2000-02-02

申请号：JP18806699

申请日：1999-05-28

Applicant: LITTON SYSTEMS INC

Inventor： ROZELLE DAVID M ,  MICHAL RONALD J ,  LAM LEO K ,  CAPPI JOHN F

IPC: H01S3/094 ,  G01C19/72 ,  H01S3/06 ,  H01S3/067

Abstract: PROBLEM TO BE SOLVED: To eliminate the backward reflection of exciting light by providing a stimulation light source which gives stimulation light to an optical fiber and guides the light to a first light shutter. SOLUTION: An optical light source is constituted in such a way that the light outputted from a first light shutter 18 is inputted to a wavelength multiplexer 26 and a gain fiber 34 is connected to the multiplexer 26 so that the wide-band light which is optically stimulated by stimulation light and outputted may be propagated to the multiplexer. In addition, an output optical fiber 29 is also connected to the multiplexer 26 so that part of the wide-band light sent from the gain fiber 34 may be guided to a second light shutter 50 and inputted to a fiber optic rotation sensor.

公开(公告)号：WO0003201A3

公开(公告)日：2000-04-20

申请号：PCT/US9914495

申请日：1999-06-25

Applicant: LITTON SYSTEMS INC

Inventor： MICHAL RONALD J ,  LAM LEO K ,  ROZELLE DAVID M

IPC: G01C19/72 ,  H01S3/067 ,  H01S3/06

CPC classification number: H01S3/06795 ,  G01C19/721

Abstract: A system for performing scale factor stabilization of a broadband optical signal source used in fiber optic gyroscopes in radiation environments. A filter device is positioned in-line with the broadband light emitted by the gain fiber to attenuate light outside of the bandwidth of the filter device. The filter device allows a bandwidth of light narrower than the spectral width of the broadband light source to propagate through while attenuating all wavelengths of light outside of its operating bandwidth. Only the portion of the broadband source spectrum contained within the bandpass of the filter is selected out, thus narrowing the spectral width of the broadband fiber source. This narrower spectral width reduces the shift of centroid wavelength of the broadband fiber source which results when the gain fiber and other sensitive optical components are exposed to ionizing radiation.

Abstract translation: 用于在辐射环境中用于光纤陀螺仪的宽带光信号源进行比例因子稳定的系统。 过滤装置与由增益光纤发射的宽带光线成一直线排列以衰减过滤装置的带宽以外的光。 滤波器装置允许比宽带光源的光谱宽度窄的光的带宽传播，同时衰减其工作带宽以外的所有波长的光。 选择包含在滤波器带通内的宽带源频谱的部分，从而使宽带光纤源的频谱宽度变窄。 这种较窄的光谱宽度减小了当增益光纤和其他敏感光学元件暴露于电离辐射时导致的宽带光纤源的质心波长的偏移。