Temperature sensing technique by using a microwave photonics filter based on an actively mode‐locked fiber laser

Luo, Jian; Cai, Xiaomei; Wang, Haoran; Fu, Hongyan

doi:10.1002/mop.32987

Cited by 11 publications

(11 citation statements)

References 18 publications

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“…One can see that f N depends on the optical path of the ring cavity, nL, and the order N. Therefore, the influence of temperature on the refractive index n will lead to a shift of the BFS, which can be expressed as [25] Δf…”

Section: Operation Principlementioning

confidence: 99%

Temperature-sensing scheme based on a passively mode-locked fiber laser via beat frequency demodulation

et al. 2023

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In this paper, we propose a temperature-sensing scheme utilizing a passively mode-locked fiber laser combined with the beat frequency demodulation system. The erbium-doped fiber is used in the laser ring cavity to provide the gain and different lengths of single-mode fibers inserted into the fiber ring cavity operate as the sensing element. Different temperature sensitivities have been acquired in the experiment by monitoring the beat frequency signals at different frequencies. The experimental results indicate that the beat frequency shift has a good linear response to the temperature change. The sensitivity of the proposed sensor is about −44 kHz/°C when the monitored beat frequency signal is about 10 GHz and the ratio of the sensing fiber to the overall length of the laser cavity is 10 m/17.5 m, while the signal-to-noise ratio (SNR) of the monitored signal is approximately 30 dB. The proposed temperature-sensing scheme enjoys attractive features such as tailorable high sensitivity, good reliability, high SNR, and low cost, and is considered to have great potential in practical sensing applications.

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Section: Operation Principlementioning

confidence: 99%

Temperature-sensing scheme based on a passively mode-locked fiber laser via beat frequency demodulation

et al. 2023

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“…The center frequency of microwave photonic filters (MPFs) can usually be widely tuned, which can be used to monitor the changes that the system senses. By directly mapping the optical wavelength shift to the microwave frequency variation, a minor change in the optical domain caused by the perturbation to be measured will be converted into a relatively large variation in the microwave domain, thus to improve the sensing speed and sensing resolution [ 13 – 16 ].…”

Section: Introductionmentioning

confidence: 99%

High-resolution silicon photonic sensor based on a narrowband microwave photonic filter

Luo

Xu²,

Yan³

et al. 2023

Front. Optoelectron.

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Microwave photonic sensors are promising for improving sensing resolution and speed of optical sensors. In this paper, a high-sensitivity, high-resolution temperature sensor based on microwave photonic filter (MPF) is proposed and demonstrated. A micro-ring resonator (MRR) based on silicon-on-insulator is used as the sensing probe to convert the wavelength shift caused by temperature change to microwave frequency variation via the MPF system. By analyzing the frequency shift with high-speed and high-resolution monitors, the temperature change can be detected. The MRR is designed with multi-mode ridge waveguides to reduce propagation loss and achieves an ultra-high Q factor of 1.01 × 106. The proposed MPF has a single passband with a narrow bandwidth of 192 MHz. With clear peak-frequency shift, the sensitivity of the MPF-based temperature sensor is measured to be 10.22 GHz/°C. Due to higher sensitivity and ultra-narrow bandwidth of the MPF, the sensing resolution of the proposed temperature sensor is as high as 0.019 °C. Graphical Abstract

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“…[9][10][11][12] Therefore, exploring the high sensitivity of temperature sensing is particularly essential. Luo et al 13 proposed a temperature-sensing scheme by using a microwave photonic filter based on an actively modelocked fiber laser and experimentally demonstrated it. Mai et al 14 proposed a sensitive dynamic temperature sensor based on the rhodamine6G (R6g) film coated antiresonance fiber (ARF).…”

Section: Introductionmentioning

confidence: 99%

Temperature sensor based on micro‐nano fiber coated with ZnO composite graphene

Song

Shao

Zheng

et al. 2022

Micro & Optical Tech Letters

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A simple temperature sensor based on ZnO composite graphene is demonstrated. With the temperature changes, the electron mobility of ZnO composite graphene changes accordingly, which leads to an effective change in the refractive index of ZnO composite graphene. Experimental results show that micro-nano fiber coated with spherical ZnO composite graphene exhibits a higher sensitivity of 0.018 dB/°C in the temperature range of 25-60°C.Overall, the results verify the effectiveness of the proposed temperature sensor in accurate temperature measurement and offer a new, unique, and convenient direction for temperature sensing.

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Temperature sensing technique by using a microwave photonics filter based on an actively mode‐locked fiber laser

Cited by 11 publications

References 18 publications

Temperature-sensing scheme based on a passively mode-locked fiber laser via beat frequency demodulation

Temperature-sensing scheme based on a passively mode-locked fiber laser via beat frequency demodulation

High-resolution silicon photonic sensor based on a narrowband microwave photonic filter

Temperature sensor based on micro‐nano fiber coated with ZnO composite graphene

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