High-sensitivity micro-strain sensing using a broadband wavelength-tunable thulium-doped all-fiber structured mode-locked laser

Wang, Juan; Ge, Siyu; Ren, Hongfei; Huang, Tao; Yang, Peilong; Xu, Peipeng; Bai, Shengchuang; Dai, Shixun; Du, Jianke; Nie, Qiuhua

doi:10.1364/ol.445042

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…Other alternatives with similar sensitivity were reported by [128]; here, the authors employed a multimode interference (MMI) filter as an SH and varied the strain from 0 to 2333 µε. This sensitivity was improved by Juan Wang et al; here, the MMI into a linear fiber mode-locked laser improved the sensitivity five times [129]. The linear fiber laser cavity is susceptible to elongation when the strain is applied.…”

Section: Fiber Laser Sensors For Strain Monitoringmentioning

confidence: 92%

Fiber Laser Sensor Configurations for Refractive Index, Temperature and Strain: A Review

et al. 2023

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Fiber laser sensors have been present for almost four decades as versatile sensing devices with a simple demodulation process, high sensitivity, and competitive resolution. This work discusses the most representative fiber laser sensor configurations employed for detecting critical parameters such as temperature, refractive index, and strain. However, essential information about other interesting parameters that have been measured is considered in this manuscript. Concurrently, the sensing elements and principle operation are described. Furthermore, these configurations are analyzed in terms of their principle of operation, sensitivity, gain medium, and wavelength operation range. According to the literature reviewed, fiber laser sensors offer the possibility of new interrogation techniques and simultaneous, independent detection. Considering interferometric fiber sensors, the fiber laser sensors offer high brightness, good output power, and high resolution. As a result, it is demonstrated that fiber laser sensors are a robust alternative for multiple sensing applications.

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Section: Fiber Laser Sensors For Strain Monitoringmentioning

confidence: 92%

Fiber Laser Sensor Configurations for Refractive Index, Temperature and Strain: A Review

et al. 2023

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“…A wavelength-tunable fiber laser (WSTL) is a powerful tool for many applications such as optical fiber sensing [ 1 ], optical communication [ 2 ], and spectroscopy [ 3 ]. As the development of WSTLs has had a significant impact in terms of promoting progress in these fields, researchers in related industries are investing energy into research on WSFLs.…”

Section: Introductionmentioning

confidence: 99%

A Single-Longitudinal-Mode S + C Band Wavelength-Tunable Fiber Laser

Liu,

Jiang

2024

Sensors

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An external cavity wavelength-fiber ring laser (ECWTFL) based on a semiconductor optical amplifier and a combined wavelength scanning filter in the Littrow configuration is proposed and experimentally demonstrated. With the benefit of the combination of an external cavity wavelength filter and a Lyot filter, the laser achieves a single-mode narrow linewidth output with a linewidth of 1.75 kHz. The wavelength tuning range reaches 133 nm, covering the entire S + C band. The proposed ECWTFL is used for demodulation of a fiber EFPI sensor; the result shows that the proposed ECWTFL has the ability to demodulate the small cavity-length FPI sensor.

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“…A low-loss atmospheric transmission window is also located in this waveband [2]. Thus, thulium-doped fiber lasers (TDFLs) have been widely investigated during the past few years, and have been used extensively in photoacoustic imaging [3], consolidation of thermoplastic coating [4], highsensitivity strain sensors [5], dual-comb spectroscopy [6], generation of microwaves [7], laser surgery [8] and pump optical sources [9]. Researchers have also tried to obtain different output wavebands using TDFL, including 1.6 μm [10], 1.7 μm [11], 1.8 μm [12], 1.9 μm [13], 2.0 μm [14], and 2.05 μm wavebands [15].…”

Section: Introductionmentioning

confidence: 99%

Thulium-doped fiber laser with switchable single-wavelength output using polarization-dependent loss

Guan

Yan²,

Qin³

et al. 2023

Front. Phys.

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A thulium-doped fiber laser (TDFL) with switchable single-wavelength output was proposed and experimentally constructed, and its output characteristics were investigated. The central wavelengths were 1940.52 nm and 2048.04 nm, defined by a superimposed uniform fiber Bragg grating (SI-UFBG) with reflectivity larger than 92%. Switchable output was successfully achieved by using polarization-dependent loss, with the help of a drop-in polarization controller and an in-line polarizer. For both output wavelengths, optical signal-to-noise ratios larger than 80 dB were achieved. Maximum fluctuations of the central wavelengths of 1940.52 nm and 2048.02 nm under 60 min were, respectively, 0.04 nm and 0.01 nm. Maximum fluctuations of output power for the same wavelengths over the same time period were, respectively, 1.09 dB and 0.12 dB. Maximum output powers of 215.12 mW and 155.53 mW were achieved for the respective output wavelengths of 1940.52 nm and 2048.02 nm. Moreover, a tuning range of ∼2 nm was realized by enforcing a strain on the SI-UFBG. The proposed TDFL may be applied in laser medicine and free-space-related applications.

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High-sensitivity micro-strain sensing using a broadband wavelength-tunable thulium-doped all-fiber structured mode-locked laser

Cited by 8 publications

References 21 publications

Fiber Laser Sensor Configurations for Refractive Index, Temperature and Strain: A Review

Fiber Laser Sensor Configurations for Refractive Index, Temperature and Strain: A Review

A Single-Longitudinal-Mode S + C Band Wavelength-Tunable Fiber Laser

Thulium-doped fiber laser with switchable single-wavelength output using polarization-dependent loss

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