Vibration amplitude analysis with a single frame using a structured light pattern of a four-core optical fibre

• Published in: Optics communications Vol. 249; no. 4-6; pp. 515 - 522
• Main Authors: Yılmaz, S. Tunç, Özugˇurel, Umut D., Bulut, Karahan, Inci, M. Naci
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.05.2005; Elsevier Science
• Subjects: Applied sciences; Circuit properties; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Fibre; Four-core; Fourier; Fundamental areas of phenomenology (including applications); Imaging and optical processing; Integrated optics. Optical fibers and wave guides; Interferometry; Multicore; Optical; Optical and optoelectronic circuits; Optics; Other fiber-optical devices; Physics; Speckle and moire patterns; Vibration; Multicore; Vibration; Fourier; Four-core; Optical; Fibre; 42.80; 42.30.Ms; Interferometry; Optical fibers; Light interferometry; Interference fringe; Fourier transformation; 42.30.Ms Multicore; Vibration measurement; Measuring methods; Experimental device; Vibration amplitude; Experimental study; CCD camera; Optical method; Fiber core; Vibrating body
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2005.01.032

Vibration amplitude measurement with a single frame using a structured light pattern of a four-core optical fibre is demonstrated both theoretically and experimentally for the first time. The structured light pattern of the four-core optical fibre consists of vertical and horizontal interference fringes. Using a digital CCD camera and the Fourier Transform analysis, such a light pattern is employed to study amplitude information of a vibrating object. Since the structured light pattern contains its own reference inside as the object vibrates there is no need to bring the object to a halt for taking a second digital frame at rest to utilise it for referencing purposes.