Design and Operation of a Concentric-Fiber Displacement Sensor

• Published in: Fiber and integrated optics Vol. 28; no. 4; pp. 301 - 309
• Main Authors: Yasin, Moh, Harun, Sulaiman W., Kusminarto, Karyono, Zaidan, A. H., Thambiratnam, Kavintheran, Ahmad, Harith
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.07.2009; Taylor & Francis
• Subjects: Applied sciences; Circuit properties; concentric bundled fiber; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; fiber-optic displacement sensor; Fiber-optic instruments; General equipment and techniques; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Integrated optics. Optical fibers and wave guides; Optical and optoelectronic circuits; Optical instruments, equipment and techniques; paraxial Gaussian beams; Physics; Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing; Integrated optics; Electromagnetism; Position control; Displacement sensor; Measurement sensor; paraxial Gaussian beams; Fiber optic sensors; Gaussian beam; Linearity; Displacement measurement; Automatic control; concentric bundled fiber; Transfer function; fiber-optic displacement sensor; Monitoring; Optical fiber
• ISSN: 0146-8030; 1096-4681
• DOI: 10.1080/01468030902842673

A concentric-fiber displacement sensor is demonstrated using a developed theory to support the experimental findings. The theoretical analysis uses an electromagnetic Gaussian beam approach to determine the transfer function of the sensor. The sensor has two operating ranges with a good linearity; namely, the front slope and back slope. On the front slope, the sensitivities are obtained at 3.6 and 2.1 mW/μm for the theoretical and experimental approaches, respectively; while on the back slope the sensitivities are 1.6 and 0.52 mW/μm for theoretical and experimental approaches, respectively. This sensor has many potential applications such as automated monitoring control, position control, and micro-displacement sensing in the hazardous regions.