Cost-effective load measurement system for health monitoring using long-period grating as an edge filter

Alamandala, Sravanthi; Prasad, R. L. N. Sai; Pancharathi, Rathish Kumar

doi:10.1016/j.yofte.2020.102328

Cited by 8 publications

(2 citation statements)

References 45 publications

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“…As one of the cost reduction methods, we have proposed an optical fiber temperature sensing system that utilizes low-cost Ethernet optical transceivers (OTRs) as replacements for broadband light sources and OSAs [9], [10]. In addition, several research studies have been conducted on cost reduction in optical sensing schemes, such as edge filtering [11], [12]. Our proposed system is designed to operate by equipping OTRs on unused ports of Internet Protocol (IP) packet exchanging devices in existing IP networks.…”

Section: Introductionmentioning

confidence: 99%

Expansion of Measurement Range of Low-Cost Ethernet-Based Temperature Sensing System Using Long-Period Fiber Grating

Nanataki,

Koyama,

Narumiya

et al. 2024

IEEE Sens. Lett.

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It is important to reduce the cost of the sensing system to promote the social implementation of optical fiber sensors. The light source and the photodetector with analysis functions, e.g., optical spectrum analyzer, are the most expensive components of an optical fiber sensing system. To solve this problem, we have proposed an Ethernet-based temperature sensing system. This system uses an inexpensive optical transceiver (OTR) as a light source for the Ethernet and a photodetector and a single-board computer with temperature evaluation functions to reduce the system cost. In this letter, we propose a method to enhance the temperature sensing function in our proposed Ethernet-based temperature sensing system by using multiple OTRs with different output wavelengths and an optical switch to expand the measurement temperature range. In addition, we constructed the proposed system and conducted a demonstration experiment to expand the temperature range that can be measured using five OTRs, one optical switch, Raspberry Pi, and a long-period fiber grating as an optical fiber sensor. The experimental results show that the temperature range from 60 to 760 °C can be expanded with an error of approximately ±5 °C.

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Section: Introductionmentioning

confidence: 99%

Expansion of Measurement Range of Low-Cost Ethernet-Based Temperature Sensing System Using Long-Period Fiber Grating

Nanataki,

Koyama,

Narumiya

et al. 2024

IEEE Sens. Lett.

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“…In view of the long-standing interest in the properties of LPGs, numerous applications have been developed in optical communication and sensing systems. Some of the applications are optical band rejection filters 1 , optical sensors for temperature, strain, stress 2 and as an edge filter for structural health monitoring 3 .…”

Section: Introductionmentioning

confidence: 99%

Widely tunable long period gratings using 3D printed periodic grooved plates

Zahra

Palma

Vita

et al. 2023

Smart Materials for Opto-Electronic Applications

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In this work we present mechanically induced Long Period Gratings (LPGs) realized in different kinds of glass optical fibers by using UV-cured 3D printed periodic grooved plate. The periodic modulation of the geometry and refractive index along the length of the optical fiber is induced by pressure applied transversely to the grooved plate and leads to light coupling between the core mode and co-propagating cladding modes at specific resonance wavelengths. Using the proposed method, we realize and analyze in detail the behavior of the gratings induced in different optical fibers (i.e., SMF-28 and two different double cladding fibers), with and without acrylate coating. Results confirm that the depth of the attenuation bands in the transmission spectrum of the gratings, which were induced by gradually increasing the applied load show high tunability in the range of 1400-1650 nm with the maximum depth of 24 dB. Among the methods used for the fabrication of LPGs, the one studied here is reversible, very low cost, easy to tune, compatible with different kind of fibers and does not require a specific preparation of the fiber. The obtained devices are potentially useful for several application spanning from filters to sensors.

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Investigation of mechanically induced long period grating by 3-D printed periodic grooved plates

Zahra

Palma

Vita

et al. 2023

Optics & Laser Technology

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Cost-effective load measurement system for health monitoring using long-period grating as an edge filter

Cited by 8 publications

References 45 publications

Expansion of Measurement Range of Low-Cost Ethernet-Based Temperature Sensing System Using Long-Period Fiber Grating

Expansion of Measurement Range of Low-Cost Ethernet-Based Temperature Sensing System Using Long-Period Fiber Grating

Widely tunable long period gratings using 3D printed periodic grooved plates

Investigation of mechanically induced long period grating by 3-D printed periodic grooved plates

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