Fiber ring laser for axial micro-strain measurement by employing few-mode concentric ring core fiber

Liu, Jingxuan; Liang, Xiao; Sun, Chunran; Jian, Shuisheng

doi:10.1016/j.yofte.2016.10.007

Cited by 9 publications

(5 citation statements)

References 25 publications

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“…The fundamental mode is the dominating peak in the spatial frequency spectrum, and there are three cladding modes at 0.033 nm −1 , 0.089 nm −1 , and 0.122 nm −1 . In addition, there are more peaks with lower amplitude intensities [28]. The relationship between spatial frequency ξ and the effective refractive index difference Δn ef f is given by [29]:…”

Section: Methodsmentioning

confidence: 99%

Strain-Insensitive Temperature Sensor Based on Few-Mode Fiber and Photonic Crystal Fiber

Gao

Xie

et al. 2022

IEEE Photonics J.

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Based on few-mode fiber (FMF) and photonic crystal fiber (PCF), a new temperature sensor with a FMF-PCF-FMF hybrid construction has been developed. Furthermore, the sensor has a longitudinally symmetrical structure that makes it have a flexible sensor head, which enhances the practical performance. Simulated results show that there are three resonant peaks with extinction ratio above 18 dB in the wavelength from 1630 nm to 1720 nm, and the temperature can be measured by calculating wavelength shift of resonant peaks. The experimental results show that the temperature sensitivity of the proposed sensor is as high as 38.6 pm/°C when the temperature ranges from 20°C to 80°C. Meanwhile, the strain sensitivity of the proposed sensor is as low as −0.457 pm/με when strain ranges from 0 to 3000 με. The high temperature sensitivity and ultralow strain sensitivity indicate that the proposed sensor can effectively eliminate the cross-sensitive issue of temperature and strain. In addition to excellent sensing performances, simple and compact structure make the proposed sensor be potential in practical applications.

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Section: Methodsmentioning

confidence: 99%

Strain-Insensitive Temperature Sensor Based on Few-Mode Fiber and Photonic Crystal Fiber

Gao

Xie

et al. 2022

IEEE Photonics J.

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“…When it comes to the strain sensing, the MZI-typed sensor is also much more sensitive than the FBG-based sensor while the measurement range of the FBG-based sensor is much wider than the MZI-based sensor. Bur similar to Liang [ 26 ], the work of Liu [ 42 ] showed that MZI-based strain sensors could also be designed to gain a wider measurement range with sacrifice to the sensitivity.…”

Section: Sensing Applicationsmentioning

confidence: 96%

“…More recently, in 2017, Liu et al [ 42 ] also introduced the few mode fiber into the strain sensing area, and demonstrated a few-mode concentric-ring core fiber (FM-CRCF) for axial micro-strain measurement with a FRL of a few-mode-single mode-few-mode (FSF) fiber structure which was used as an optical band-pass filter. Meanwhile, two sections of the CRCF served as the mode generator and coupler while the center SMF is the crucial part for sensing process.…”

Section: Sensing Applicationsmentioning

confidence: 99%

Optical Fiber Sensors Based on Fiber Ring Laser Demodulation Technology

Xie

Zhang

Wang

et al. 2018

Sensors

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A review for optical fiber sensors based on fiber ring laser (FRL) demodulation technology is presented. The review focuses on the principles, main structures, and the sensing performances of different kinds of optical fiber sensors based on FRLs. First of all, the theory background of the sensors has been discussed. Secondly, four different types of sensors are described and compared, which includes Mach–Zehnder interferometer (MZI) typed sensors, Fabry–Perot interferometer (FPI) typed sensors, Sagnac typed sensors, and fiber Bragg grating (FBG) typed sensors. Typical studies and main properties of each type of sensors are presented. Thirdly, a comparison of different types of sensors are made. Finally, the existing problems and future research directions are pointed out and analyzed.

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“…In [42], the authors propose a ring laser configuration using an MZI filter; this configuration shows a sensitivity of 2.3 pm µϵ −1 and an R 2 of 0.99954 for strain parameter. In [43], the authors used a fewmode concentric-ring core fiber configuration and obtained a laser emission with an SMSR of 45 dB and a sensitivity of 0.81 pm µϵ −1 and an R 2 of 0.9938. Xuekun Bai et al presented a ring laser that included a photonic crystal fiber MZI filter achieving a sensitivity of 2.1 pm µϵ −1 this within an operating range of 0-2100 µϵ [44].…”

Section: Introductionmentioning

confidence: 99%

High-resolution strain fiber laser-sensor based on core-offset mach-zehnder interferometer

Contreras-Teran¹,

Jáuregui-Vázquez²,

Gallegos-Arellano³

et al. 2023

Meas. Sci. Technol.

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This paper presents an axial strain laser sensing setup based on a core-offset Mach-Zehnder interferometer (MZI). The core-offset MZI was implemented by fusion splicing of three segments of single mode fiber and was used as wavelength selective filter and sensing head. The experimental results show that in the strain range from 0 to 333.333 με, the laser wavelength emission shifts linearly from 1554 to 1557 nm, achieving a strain sensitivity of 5.2332 pm/με and an R2 value of 0. 9988. The laser emission has a linewidth of 0.02 nm and a single-mode suppression ratio (SMSR) of 45 dB. Furthermore, the fiber laser offers output power stability at room temperature, compactness, and robustness. The experimental results show that in the strain range from 0 to 333.333 µε, the laser wavelength emission shifts linearly from 1554 to 1557 nm, achieving a strain sensitivity of 5.2332 pm/µε and an R2 value of 0. 9988. The laser emission has a linewidth of 0.02 nm and a single-mode suppression ratio (SMSR) of 45 dB. Furthermore, the fiber laser offers output power stability at room temperature, compactness, and robustness.

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Fiber ring laser for axial micro-strain measurement by employing few-mode concentric ring core fiber

Cited by 9 publications

References 25 publications

Strain-Insensitive Temperature Sensor Based on Few-Mode Fiber and Photonic Crystal Fiber

Strain-Insensitive Temperature Sensor Based on Few-Mode Fiber and Photonic Crystal Fiber

Optical Fiber Sensors Based on Fiber Ring Laser Demodulation Technology

High-resolution strain fiber laser-sensor based on core-offset mach-zehnder interferometer

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