ISSN 1991-2927
 

ACP № 2 (56) 2019

Author: "Oleg Vitalevich Ivanov"

Sergei Viacheslavovich Vasin, Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics (IRE) of the Russian Academy of Sciences (RAS), Candidate of Physics and Mathematics; graduated from Physics and Technology Faculty оf Ulyanovsk branch of Moscow State University; Senior Scientist at Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics (IRE) of the Russian Academy of Sciences (RAS); Associate Professor at the Department of Radioengineering, Opto- and Nanolectronics of Ulyanovsk State Technical University; an author of papers in the field of fiber optics, methods of inspection of semiconductors and semiconductor devices. [e-mail: s.vasin@outlook.com]S. Vasin,

Oleg Vitalevich Ivanov, Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics and at Technological Research Institute of Ulyanovsk State University, Doctor of Physics and Mathematics; graduated from Physics and Technology Faculty оf Ulyanovsk branch of Moscow State University; Scientist at Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics and at Technological Research Institute of Ulyanovsk State University; Professor at the Department of Radioengineering, Opto- and Nanolectronics of Ulyanovsk State Technical University; an author of papers in the field of fiber optics, optics of anisotropic media and thin films. [e-mail: olegivvit@yandex.ru]O. Ivanov

Development of a Control and Interrogation Scheme of a Fiber-optic Bend Sensor Based on Double Cladding Fiber 000_14.pdf

The control and interrogation scheme of the fiber optic bend sensor was developed and implemented. The structure of the sensor is formed by inserting a section of SM630 fiber with double cladding between standard SMF-28 single-mode fibers. The operating principle of the sensor is based on conversion between core and cladding modes. The modes are coupled at the junction of the fibers with different refractive index profiles. Two laser diodes with the wavelengths of 1328 and 1545 nm are used for sensor interrogation. At these two wavelengths, the dependences of fiber transmittance on bending are significantly different. A microcontroller is used to control and collection data from a photodetector. The article shows that the proposed and implemented scheme allows the sensor to measure bends with curvature radii from meters to 26 cm with a measurement error less than 1%.

Optical fiber, cladding modes, fiber optic bend sensor.

2017_ 1

Sections: Electronic and electrical engineering

Subjects: Electrical engineering and electronics.


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