在電力工業中，電流量測的目的是為了保護設備。在本文中提出使用布拉格光纖光柵和超結構光纖光柵的光學式電流感測器來量測直流電流與交流電流。光學式電流感測器是將光纖光柵、磁石及聚合物封裝在鋁質圓柱內。由通過螺線管電流的大小，產生不同大小的磁場，去吸引感測器內的磁石。使感測器內的光纖光柵的中心波長產生位移，即可量得光纖光柵位移量和電流大小的關係，達到量測電流大小的目地。

The measurement of current is used for protection devices in the power industry. The optical fiber sensors using the Superstructure Fiber Grating (SFG) and Fiber Bragg Grating (FBG) for measuring AC and DC currents are proposed. The sensor is based on the Fiber Grating, magnetic and polymer encapsulated in an aluminum cylinder. The magnetic field provided by the current in the solenoid, will induce the magnetic force for the sensor. The center-wavelength shift of the fiber grating is caused by the magnetic field. Finally, the relation between the center-wavelength shift of the fiber grating and the current magnitude is obtained.

目 錄
摘要........................................................i
Abstract.....................................................ii
致謝........................................................iii
目錄.......................................................iV
圖目錄.....................................................viii
表目錄......................................................ix
第一章 緒論............................ .....................1
1.1 研究動機...............................................1
1.2 研究目的...............................................1
1.3 文獻研讀...............................................2
1.4 本文架構...............................................3
第二章 磁極與螺線管的簡介....... ............................4
2.1 引言..................................................4
2.2 磁化與磁極............................................4
2.3 螺線管簡介............................................6
第三章 光纖光柵簡介................. ........................8
3.1 引言..................................................8
3.2 光纖光柵歷史..........................................8
3.3光纖光柵的種類.......................................10
3.4 光纖結構.............................................13
3.5 布拉格光纖光柵.......................................15
3.6 長週期光纖光柵.......................................20
3.7 超結構光纖光柵.......................................24
第四章 光纖電流感測器理論分析.............................. 29
4.1 引言.................................................29
4.2 光纖電流感測器工作原理...............................30
第五章 光纖電流感測器之應用................................ 35
5.1 引言................................................ 35
5.2 感測器製作及所需設備................................ 35
5.2.1 光纖電流感測器之製作........ ......................35
5.2.2 實驗設備.................. ........................36
5.2.3 感測器的製作... .................................. 37
5.3 電流的量測...........................................38
5.3.1 直流量測.......................................... 38
5.3.2 交流量測.......................................... 39
5.3.3 功率放大和峰值檢測電路............................ 41
5.4 實驗結果.............................................42
5.4.1 使用布拉格光纖光柵電流感測器量測直流電流.......... 43
5.4.1.1 光纖電流感測器與螺線管距離為2 cm.............. 43
5.4.1.2 光纖電流感測器與螺線管距離為1.5cm............. 44
5.4.1.3 光纖電流感測器與螺線管距離為1cm...............46
5.4.1.4 結果與討論.....................................47
5.4.2 使用布拉格光纖光柵電流感測器量測交流電器.......... 48
5.4.3 使用超結構光纖光柵電流感測器測量直流電流.......... 51
5.4.3.1 光纖電流感測器與螺線管距離為2 cm.............. 51
5.4.3.2 光纖電流感測器與螺線管距離為1.5cm............. 53
5.4.3.3 光纖電流感測器與螺線管距離為1cm.............. 55
5.4.3.4 結果與討論.....................................57
5.4.4 使用超結構光纖光柵電流感測器量測交流電流.... ......58
5.4.5 超結構光纖光柵電流感測器在溫度變化時波長位移變化. .62
第六章 結論與展望.......................................... 64
6.1 結論.................................................64
6.2 未來研究方向.........................................64
參考文獻.......................... .........................65
作者簡介........... ........................................68

[1]J. Teunissen, C. Helmig, R. Merte et al, “Fiber Optical On-Line Monitoring For High-Voltage Transformers,” SPIE, Vol. 4204, pp. 198-205, 2001.
[2]Y. Liu, Z. Guo, “Simultaneous Pressure and Temperature Measurement with Polymer-Coated Fiber Bragg Grating,” Electronics Letters, Vol. 36, pp. 564-566, 2000.
[3]Y. W. Lee, I. Yoon, B. Lee, “A Simple Fiber Optic Current Sensor Using a Long Period Fiber Grating Inscribed on a Polarization Maintaining Fiber as a Sensor Demodulator,” Sensor and Actuators, vol. 112, pp. 308-312, 2004.
[4]P. M. Cavaleiro, F. M. Araujo and A. B. L. Ribeiro, “Metal-coated Fibre Bragg Grating Sensor For Electric Current Metering,” Electronics Letters, Vol. 34, pp. 1133-1135, 1998.
[5] S. Jin, H. Mavoori, R. P. Espindola, L. E. Adams, and T. A. Strasser, “Magnetically Tunable Fiber Bragg Gratings,” Optical Fiber Communication Conference, Vol. 3, pp. 21-26, 1999.
[6] C. L. Tien, C. C. Hwang, H. W. Chen, W. F. Liu, and S. W. Lin , “Magnetic Sensor Based on Side – Polished Fiber Bragg Grating Coated With Iron Film,” IEEE Transactions on Magnetics, Vol. 42, No. 10, pp. 3285-3287, 2006.
[7]H. J. Sheng, M. Y. Fu, T. C. Chen, W. F. Liu, and S. S. Bor, “A Lateral Pressure Sensor Using a Fiber BraggGrating,” Photonics Technology Letters, Vol. 16, pp. 1146 –1148, 2004.
[8] 金重勳，磁性技術手冊，中華民國磁性技術協會，2002年。
[9]杜光宗，電磁學，建宏出版社，1990年3月。
[10]T. Redogan, “Fiber Grating Spectra,” Journal of Lightwave Technology, Vol. 15, No. 8, pp. 1277-1294, 1997.
[11]A. Othonos, K. Kalli, “Fiber Bragg Gratings Fundamental and Applications in Telecommunications and Sensing,” Artech HouseINC, 1999.


[12]J. L. Cruz, B. Ortega, M. V. Andres, “Chirped Fibre Bragg Gratings for Phased-Array Antennas,” Electronics Letters, Vol. 33, pp. 1231-1232, 1997.
[13] Y. Chang, R. Fetterman., “Optically Controlled Serially Fed Phased-Array Transmitter,” IEEE Microwave Letter, Vol. 7, pp. 69-71, 1997.
[14]M. Yamada and K. Sakuda, “Analysis of Almost Periodic Distributed Feedback Slab Waveguide via a Fundamental Matrix Approach,” Appl. Opt, Vol. 26, No. 16, pp. 3474-3478, August 1987.
[15] K. O. Hill and G. Meltz, “Fiber Bragg grating technology fundamentals and overview,” Journal of Lightwave Technology, Vol. 15, No. 8, pp. 1263-1276, August 1997.
[16] J. N. Jang, et al, “Novel Temperature Insensitive Long-Period Grating by Using the Refractive Index of the Outer Cladding,” optical fiber comference, Vol. 1, pp. 29-31, 2000.
[17]T. J. EOM, Y. J. KIM, Y. CHUNG, W. T. HAN,U. C. PEAK, and B. H. LEE, “Asymmetric Transmission Spectrum of a Long-Period Fiber Grating and Its Removal Using a Beam Scanning Method,” IEICE Transactions, Vol. E84-B, No. 5, pp. 1241-1246, 2001
[18]N. G. R. Broberick and C. M. D. Sterke. “Theory of Grating Superstructure,” Physical Review E, Vol. 55, No. 3, pp. 3634-3646, March 1997.
[19] A. P. Zhang, et al, “Mode Couplings in Superstructure Fiber Bragg Gratings,” Technology Letters, Vol. 14, No. 4, pp. 489-491, 2002.
[20] C. M. D. Sterke and N. G. R. Broderick, “Couple-mode equations for superstructure Bragg gratings,” Optics Letter, Vol. 20, No. 20, pp. 2039-2041, 1995.
[21] J. Teunissen, C.Helmig, D. Perier, “Fiber Bragg Gratings for Thermal H-V Transformer Online Monitoring, ” SPIE, pp. 38-41, 2000.
[22] 廖延彪，張志鵬等，波導光學傳感器，北京科學出版社，1998年。
[23]M. S. Melle, K. Liu, “A Passive Wavelength Demodulation System for Guided-Wave Bragg Grating Sensors,” IEEE Photon. Technology Letters. Vol. 4, pp. 516-518, 1992.

[24]C. R. Giles, “Lightwave Applications of Fiber Gratings,” Journal of Lightwave Technology, vol. 15, pp. 1391-1404, 1997.
[25]胡少康， “光纖光柵水位計”， 逢甲大學電機工程所碩士論文，2006年6月。
[26] 林家民，“可同時量測壓力與溫度之光纖感測器”， 逢甲大學電機
工程所碩士論文，2004年5月。