A Parallel Multiplexed Temperature Sensor System Using Bragg-Grating-Based Fiber Lasers

Mandal, Jharna; Sun, Tao; Grattan, K. T. V.; Zheng, Ruitao; Ngo, Nam Quoc; Augousti, A.T.

doi:10.1109/jsen.2006.878001

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…Mandal et al have reported multiplexed temperature sensor systems by using an optical fiber FBG sensor over the range from 27 • C to 540 • C [15]. He have reported that FBGs-based temperature sensing using a femtosecond laser operates up to 1000 • C [16].…”

Section: Introductionmentioning

confidence: 99%

Responsiveness of temperature using tunable dual-wavelength Q-switched fiber laser

Zamri¹,

Zalkepali²,

Awang³

et al. 2023

Laser Phys.

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In this paper, a responsiveness temperature based on a tunable dual-wavelength Q-switched fiber laser has been proposed and experimentally demonstrated. Experiments have been carried out with tunable dual-wavelength Q-switched fiber laser by using graphite as a saturable absorber, which is incorporated in the two fiber Bragg gratings (FBG) as a sensing element. Both FBG 1 and FBG 2 have a central wavelength of 1550 nm and 1551 nm, respectively. The optical spectral and RF signals are proven observed during the temperature change. The results from optical spectra demonstrate the measured temperature has good linearity, where the slope of the graph is thus the temperature sensitivity of 1550 nm FBG. The R2 value of the graph is 0.965 and the value of temperature sensitivity is 0.0064 nm °C−1. For FBG 2 as the sensing element, the R2 value of the graph is 0.9751 and the value of temperature sensitivity is 0.0068 nm °C−1. In addition, the repetition rate is almost linear with the temperature change, giving the correlation factor of R2 value of FBG 1 and FBG 2 are 0.8118 and 0.9046, respectively. The experimental results prove the feasibility of the proposed temperature sensor.

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Section: Introductionmentioning

confidence: 99%

Responsiveness of temperature using tunable dual-wavelength Q-switched fiber laser

Zamri¹,

Zalkepali²,

Awang³

et al. 2023

Laser Phys.

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“…Thus, the previous approaches have been proposed to suppress the MLM spikes for stable SLM operation, including utilization of the saturable absorber (SA) based filter, phase-shifted fiber Bragg grating (FBG), ultra-narrow optical filter, compound-fiber-ring method, optical injection technique and Rayleigh backscattering (RB) characteristic, respectively [8][9][10][11][12][13]. Furthermore, to obtain the tunability in the EDF lasers, utilization of tunable bandpass filter (TBF), narrow passband filter, variable FBG, silicon-microringresonator (SMR) and Fabry-Perot tunable fiber (FP-TF) have been operated in the fiber ring for wavelength-selection [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Feedback-Injected Erbium Fiber Laser With Selectable Tunability and Constant Single-Longitudinal-Mode Characteristic

et al. 2020

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In this investigation, a wavelength-selected single-longitudinal-mode (SLM) erbium-doped fiber (EDF) ring laser utilizing C-band EDF based gain medium over a tuning bandwidth of 1524.0 to 1573.0 nm is demonstrated experimentally. A self-injection Rayleigh backscattering (RB) is designed in the EDF ring laser configuration to suppress the multi-longitudinal-mode (MLM) oscillation and narrow the obtained linewidth. Here, the physical output features of the proposed self-injected RB EDF laser are also studied and discussed, such as the optical signal to noise ratio (OSNR), output power, and laser linewidth, respectively. Therefore, the demonstrated EDF laser not only can reach SLM output, but also can produce a flat output spectrum of 1524.0 to 1554.0 nm with 0.2 dB power variation. Moreover, the measured fluctuation of each wavelength can be kept at 0.05 nm based on the presented self-injected RB EDF laser, while the uncertainty issue is also considered.

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“…Fiber Bragg Grating sensor network analyzer as a new type of sensor is widely used to measure the temperature [1], strain [2], the pressure [6], displacement [10], vibration [7] and so on. There is significant practical value and broad application prospects in the engineering and technical fields of the aerospace, large dam bridges, ships vehicles, tunnel construction, electromagnetic interference, disaster monitoring, intelligent materials, etc.…”

Section: Introductionmentioning

confidence: 99%

An Improved Method Based on FPGA and DSP for Designing FBG Sensor Analyzer

Luo

Zheng

2013

AMR

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Fiber Bragg sensors become research focus of sensing technology, and have been widely used in many applications. This paper proposed a novel Fiber Bragg Grating sensor analyzer based on FPGA (Field Programmable Gate Array) and DSP (Digital Signal Processor) platform, which converted external parameter changes into wavelength shift in fiber Bragg gratings. The system can measure real-time temperature, strain, pressure, displacement and others through key steps including data acquisition, clutter Filtering, signal peak detection, Gaussian curve fitting and weighted wavelength calculation to carry out wavelength demodulation. Moreover, it is able to achieve fault diagnosis and positioning of the fiber link. Experimental results show that the system has advantages of low power consumption, good linearity, strong robustness, high precision and resolution on wavelength demodulation. And the system is still stable and reliable after a long test under different conditions.

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A Parallel Multiplexed Temperature Sensor System Using Bragg-Grating-Based Fiber Lasers

Cited by 8 publications

References 20 publications

Responsiveness of temperature using tunable dual-wavelength Q-switched fiber laser

Responsiveness of temperature using tunable dual-wavelength Q-switched fiber laser

Feedback-Injected Erbium Fiber Laser With Selectable Tunability and Constant Single-Longitudinal-Mode Characteristic

An Improved Method Based on FPGA and DSP for Designing FBG Sensor Analyzer

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