Compact multichannel high-resolution micro-electro-mechanical systems-based interrogator for Fiber Bragg grating sensing

Ganziy, Denis; Rose, Bjarke; Bang, Ole

doi:10.1364/ao.56.003622

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…In addition, the static interrogation precision could reach 0.5 pm in the temperature experiment. In this paper, the typical interrogators based on M-Z interferometer [ 5 ], WDM+FDM [ 6 ] and the latest approaches based on encoding strategy [ 11 ], MEMS [ 24 ], on-chip AWG [ 26 ] are taken into comparison. To assess the performance, the precision, maximum capacity, interrogation and cost of different systems were compared and analyzed.…”

Section: Experiments and Discussionmentioning

confidence: 99%

“…At the same time, a type of incomplete waveform repair algorithm was added to improve accuracy. Anziy proposed a novel type of compact high-resolution multichannel micro-electro-mechanical systems (MEMS)-based interrogator [ 24 ], where the linear detector was replaced with a digital micromirror device (DMD). The measured wavelength resolution could reach typically 0.5 pm for an interrogation system with four channels.…”

Section: Introductionmentioning

confidence: 99%

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A Fiber Bragg Grating Interrogation System with Self-Adaption Threshold Peak Detection Algorithm

Zhang

Jin

et al. 2018

Sensors

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A Fiber Bragg Grating (FBG) interrogation system with a self-adaption threshold peak detection algorithm is proposed and experimentally demonstrated in this study. This system is composed of a field programmable gate array (FPGA) and advanced RISC machine (ARM) platform, tunable Fabry–Perot (F–P) filter and optical switch. To improve system resolution, the F–P filter was employed. As this filter is non-linear, this causes the shifting of central wavelengths with the deviation compensated by the parts of the circuit. Time-division multiplexing (TDM) of FBG sensors is achieved by an optical switch, with the system able to realize the combination of 256 FBG sensors. The wavelength scanning speed of 800 Hz can be achieved by a FPGA+ARM platform. In addition, a peak detection algorithm based on a self-adaption threshold is designed and the peak recognition rate is 100%. Experiments with different temperatures were conducted to demonstrate the effectiveness of the system. Four FBG sensors were examined in the thermal chamber without stress. When the temperature changed from 0 °C to 100 °C, the degree of linearity between central wavelengths and temperature was about 0.999 with the temperature sensitivity being 10 pm/°C. The static interrogation precision was able to reach 0.5 pm. Through the comparison of different peak detection algorithms and interrogation approaches, the system was verified to have an optimum comprehensive performance in terms of precision, capacity and speed.

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Section: Experiments and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Fiber Bragg Grating Interrogation System with Self-Adaption Threshold Peak Detection Algorithm

Zhang

Jin

et al. 2018

Sensors

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“…This is obviously significantly more difficult for gratings with wider linewidth resonances (LPGs, Ex-TFBGs) or when measurements are carried out with lower spectral resolution. In order to achieve such precision, peak fitting algorithms have been developed for the most common FBGs [190][191][192][193][194][195][196], based on model function fits, centroid calculation or Hilbert transform approaches. Of course, these techniques remain available for FBGs in multicore systems, as long as the cores are single mode.…”

Section: 6g Sensing In Multimodal Systems With Fiber Gratingsmentioning

confidence: 99%

Mode-division and spatial-division optical fiber sensors

et al. 2022

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The aim of this paper is to provide a comprehensive review of mode-division and spatial-division optical fiber sensors, mainly encompassing interferometers and advanced fiber gratings. Compared with their single-mode counterparts, which have a very mature field with many highly successful commercial applications, multimodal configurations have developed more recently with advances in fiber device fabrication and novel mode control devices. Multimodal fiber sensors considerably widen the range of possible sensing modalities and provide opportunities for increased accuracy and performance in conventional fiber sensing applications. Recent progress in these areas is attested by sharp increases in the number of publications and a rise in technology readiness level. In this paper, we first review the fundamental operating principles of such multimodal optical fiber sensors. We then report on the theoretical formalism and simulation procedures that allow for the prediction of the spectral changes and sensing response of these sensors. Finally, we discuss some recent cutting-edge applications, mainly in the physical and (bio)chemical fields. This paper provides both a step-by-step guide relevant for non-specialists entering in the field and a comprehensive review of advanced techniques for more skilled practitioners.

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Compact multichannel high-resolution micro-electro-mechanical systems-based interrogator for Fiber Bragg grating sensing

Cited by 2 publications

References 11 publications

A Fiber Bragg Grating Interrogation System with Self-Adaption Threshold Peak Detection Algorithm

A Fiber Bragg Grating Interrogation System with Self-Adaption Threshold Peak Detection Algorithm

Mode-division and spatial-division optical fiber sensors

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