Noncontact detection of ultrasonic waves using fiber optic Sagnac interferometer

被引：42
|
作者：
Jang, Tae Seong [1 ]
Lee, Seung Seok [1 ]
Kwon, Il Bum [1 ]
Lee, Wang Joo [1 ]
Lee, Jung Ju [1 ]
机构：
[1] Department of Mechanical Engineering, Korea Adv. Inst. of Science/Technol., Taejon 305-701, Korea, Republic of
来源：
| 2002年 / Institute of Electrical and Electronics Engineers Inc.卷 / 49期
关键词：
Birefringence - Frequencies - Interferometers - Laser beams - Light polarization - Nondestructive examination - Oscillations - Piezoelectric transducers - Surface waves - Ultrasonic waves;
D O I：
10.1109/TUFFC.2002.1009334
中图分类号：
学科分类号：
摘要：
This paper describes a fiber optic sensor suitable for noncontact detection of ultrasonic waves. This sensor is based on the fiber optic Sagnac interferometer, which has a path-matched configuration and does not require active stabilization. Quadrature phase bias between two interfering lasor beams in the Sagnac loop is applied by controlling the birefringence using a fiber polarization controller. A stable quadrature phase bias can be confirmed by observing the interferometer output according to the change of phase bias. Additional signal processing is not needed for the detection of ultrasonic waves using the Sagnac interferometer. Ultrasonic oscillations produced by conventional ultrasonic piezoelectric transducers were successfully detected, and the performance of this interferometer was investigated by a power spectrum analysis of the output signal. Based on the validation of the fiber optic Sagnac interferometer, noncontact detection of laser-generated surface waves was performed. The configured Sagnac interferometer is very effective for the detection of small displacement with high frequency, such as ultrasonic waves used in conventional nondestructive testing (NDT).
引用
收藏
相关论文
共 50 条
  • [31] Spectral effects in a fiber optic Sagnac interferometer due to undesired perturbations
    Diego, JLA
    García, AC
    Misas, CJ
    Higuera, JML
    [J]. PHOTONICS, DEVICES,AND SYSTEMS, 2000, 4016 : 124 - 129
  • [32] Thermal Induced Nonreciprocity in Fiber Optic Sensors based on Sagnac Interferometer
    Chen, Xingfan
    Liu, Rui
    [J]. 6TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: DESIGN, MANUFACTURING, AND TESTING OF SMART STRUCTURES, MICRO- AND NANO- OPTICAL DEVICES, AND SYSTEMS, 2012, 8418
  • [33] Quantitative analysis of the Shupe reduction in a fiber-optic Sagnac interferometer
    Dai, XH
    Zhao, XL
    Cai, BC
    Yang, GG
    Zhou, KJ
    Liu, C
    [J]. OPTICAL ENGINEERING, 2002, 41 (06) : 1155 - 1156
  • [34] A fiber-optic current sensor based on a differentiating Sagnac interferometer
    Wang, TY
    Luo, CM
    Zheng, SX
    [J]. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2001, 50 (03) : 705 - 708
  • [35] A high-resolution velocimeter based on a fiber optic Sagnac interferometer
    Ruan, F
    Liaw, CY
    Zhou, Y
    Lam, YL
    Mei, SH
    [J]. ADVANCED PHOTONIC SENSORS AND APPLICATIONS, 1999, 3897 : 597 - 604
  • [36] Modeling a multimode Sagnac interferometer: Application for an embarked fiber optic gyroscope
    Medjadba, H.
    Lecler, S.
    Simohamed, L. M.
    Chakari, A.
    [J]. OPTICAL SENSORS 2008, 2008, 7003
  • [37] A fiber-optic current sensor based on a differentiating Sagnac interferometer
    [J]. Wang, T., 2001, Institute of Electrical and Electronics Engineers Inc. (50)
  • [38] Distributed fiber optic sensor based on the sagnac interferometer and fiber gratings for aircraft and spacecraft
    Udd, E
    [J]. FLY-BY-LIGHT III, 1996, 2840 : 189 - 195
  • [39] Fiber optic strain sensor based on the Sagnac interferometer with a birefringent photonic crystal fiber
    Kaczmarek, Cezary
    [J]. PRZEGLAD ELEKTROTECHNICZNY, 2012, 88 (11B): : 288 - 290
  • [40] NOVEL FIBER OPTIC GYROSCOPE WITH A CONFIGURATION COMBINING SAGNAC INTERFEROMETER WITH FIBER RING RESONATOR
    YU, A
    SIDDIQUI, AS
    [J]. ELECTRONICS LETTERS, 1992, 28 (19) : 1778 - 1780
12345