采用3×3耦合器构成非互易结构的开环光纤陀螺,具有灵敏度高、测量范围大等优点.信号检测在光纤陀螺系统中占有非常重要的地位,其解调精度的大小直接影响光纤陀螺的分辨率.根据使用3×3耦合器的开环光纤陀螺输出信号模型的特点,采用一种新的信号解调算法,可以准确解调任意动态范围的输入,克服在工作点附近灵敏度低的缺点,改善被测信号的精度.实验结果表明,算法能快速、准确解调被测物理量.
参考文献
| [1] | Jiang Yi,Chen Shufen.Direct demodulation for signal from fiber grating sensors by interferometer based on 3×3 coupler[J].Acta.Optica Sinaca (光学学报),2004,24(11):1487-1490 (in Chinese). |
| [2] | Sheem S K.Fiber optic gyroscope with 3×3-directional coupler[J].Appl.Phys.Lett.,1980,37:869-871. |
| [3] | Trommer G F,Poisel H,Buhler W.Passive fiber optic gyroscope[J].Appl.Opt.,1990,29(36):5360-5365. |
| [4] | Vines L,Wang G.Sagnac interferometer design for differential rotation measurement[C].Optical Fiber Sensors Conference Technical Digest,2002,1:395-398. |
| [5] | Bechtle J,Trommer G F.A new measurement algorithm for the 3×3 fiber optic Sagnac interferometer[C].SPIE,2005,5855:944-947. |
| [6] | Lin Xiaoli,Wang Ping,Wang Qiang.Study on different splitting ratio characteristic of wavelength-flattened fused-taper fiber couplers[J].Chinese Journal of Quantum Electronics(量子电子学报),2004,24(1):68-72 (in Chinese). |
| [7] | Wang Xueren.Analysis of optical switching in the nonlinear two-guide coupler[J].Chinese Journal of Quantum Electronics (量子电子学报),2000,17 (3):215-218 (in Chinese). |
| [8] | Li Jing,Wang Wei.Development on open loop FOG with 3×3 coupler[J].Opto-Electronic Engineering (中国惯性技术学报),2004,12(6):65-69 (in Chinese). |
| [9] | Rochford K B.Polarization dependence of response functions in 3×3 sagnac optical fiber current sensors[J].Journal of Lightwave Technology,1994,12(8):1504-1509. |
| [10] | Harti E N,Trommer G F,Muller R.Low cost passive fiber optic gyroscope[C].SPIE,1992,1585:405-416. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%