Research and application of fiber Bragg grating-based temperature sensors using a technique of discontinuous control and setting adjustment

Vardan Mkrttchian; Aram Paronikyan; Merujan Grigoryan; Sergey Balyan

doi:10.1117/12.397914

31 August 2000 Research and application of fiber Bragg grating-based temperature sensors using a technique of discontinuous control and setting adjustment

Vardan Mkrttchian, Aram Paronikyan, Merujan Grigoryan, Sergey Balyan

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Proceedings Volume 4074, Applications of Optical Fiber Sensors; (2000) https://doi.org/10.1117/12.397914
Event: Symposium on Applied Photonics, 2000, Glasgow, United Kingdom

Abstract

The main lack of application of an optical system with Fiber Bragg Grating (FBG), as countermeasure feeler of a management system is a thermal drift, as a result of which depends undesirable oscillations of control parameters of an optical system. Depending on a thermal drift, the wavelength can change by attitude 0.01 nm/ degree(s)N, that is caused by change of a factor of an interception of a fiber and minor effect of heat expansion of a fiber. These changes are unwanted to those narrow intervals of a channel used in fast-response systems, which one today can achieve up to 50 GHz. The suggested technique is based upon a synthesis of two independent concepts of control, the sliding mode and optimal rating. The currently accepted title of this technique is DISCONTINUOUS CONTROL and SETTING ADJUSTMENT. The sliding mode is a technique used for discontinuous control and setting adjustment for optical system with FGS-s optimization. Control within sliding mode enables us to decrease the sensitivity to variations of optical system with FBG-s characteristics making them independent upon the environment. On the basis of offered technique by us is built testing software for synthesis new optical sensors of temperature.

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Vardan Mkrttchian, Aram Paronikyan, Merujan Grigoryan, and Sergey Balyan "Research and application of fiber Bragg grating-based temperature sensors using a technique of discontinuous control and setting adjustment", Proc. SPIE 4074, Applications of Optical Fiber Sensors, (31 August 2000); https://doi.org/10.1117/12.397914

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KEYWORDS

Control systems

Fiber Bragg gratings

Cladding

Sensors

Differential equations

Switching

Systems modeling

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