Vibration Sensor Based on the Resonance Power Leakage in a Tapered Capillary Fiber

Lu, Dan; Zhang, Mingjie; Qi, Zhi-mei

doi:10.1109/jsen.2017.2765891

Cited by 10 publications

(13 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, the sensing light is interfered with the reference light through a symmetric 3*3 coupler and then detected by the PDs. Owing to the photo-elastic effect of optical fiber [20], the optical phase of light in the sensing fiber will be modulated by the pressure applied on the sensing arm. As a result, the phase difference between the sensing light and reference light, ∆φ, can be described as follow,…”

Section: A Sensitization Principlementioning

confidence: 99%

Noninvasive Monitoring of Vital Signs Based on Highly Sensitive Fiber Optic Mattress

Wang

et al. 2020

IEEE Sensors J.

View full text Add to dashboard Cite

A smart mattress based on optical fiber Mach-zender interferometer (OF-MZI) is designed for noninvasive and continuous monitoring of human vital signs. Through arranging the sensing fiber between two elastic covering layers with sandwich structure, the mattress was sensitive to the respiration and heartbeat induced micro-pressure. In the processing terminal, the waveforms of vital signs were demodulated by 3 *3 coupler based differentiate and cross-multiplying method, and then four characteristic indicators including the heart rate, heartbeat amplitude, respiration rate, and respiration amplitude were respectively extracted through feature extraction algorithm, for evaluating the human health condition. Clinical experimental results of eighteen subjects indicate that the mattress system could not only distinguish the activity states of no body, on bed, body movement and off bed, but also contribute to clinical diagnosis of bradycardia, tachycardia, polypnea and apnoea. By adopting Bland-Altman analysis method, good reproducibility and accuracy were confirmed, where the max errors of heart rate and respiration rate are respectively 2 bpm and 1 bpm. Moreover, the responses at different positions of the mattress are identical and the continuous monitoring results in one day are consistent with daily change of vital signs, which proves that the fiber optic mattress has good reliability and stability. Beneficial from high-sensitivity, multiple parameters, long-term continuous monitoring, high comfortability and low cost, the mattress is promising in the early detection and prevention of cardiac and respiratory diseases as a household medical device.Index Terms-smart mattress, optical fiber Machzender interferometer, healthcare monitoring, heartbeat, respiration.

show abstract

Section: A Sensitization Principlementioning

confidence: 99%

Noninvasive Monitoring of Vital Signs Based on Highly Sensitive Fiber Optic Mattress

Wang

et al. 2020

IEEE Sensors J.

View full text Add to dashboard Cite

show abstract

“…The SL-ARROW mode in the capillary waveguide is sensitive to the surrounding environments, and various sensing applications have been proposed, such as vibration sensor, humidity sensor, water-level sensing, etc. The working principle of the SL-ARROW is introduced by the vibration sensor [7].…”

Section: The Antiresonant Reflecting Optical Waveguide Sensor 31 Thementioning

confidence: 99%

“…Both ends of the 8 cm long capillary optical fiber are cut by the highprecision cutter, and the cut capillary fiber and single-mode fiber (SMF) are spliced through the fiber splicer. The cross section of the capillary fiber and the splicing diagram between the capillary fiber and SMF are shown in Figure 2 [7].…”

Section: The Antiresonant Reflecting Optical Waveguide Sensor 31 Thementioning

confidence: 99%

“…On the contrary, when the wavelength meets the resonant condition, the guided light will resonate and will not be reflected by the Fabry-Pérot cavity and will leak out of the cladding to generate the transmission spectrum. In the transmission spectrum, periodic and narrow loss attenuation corresponding to the Fabry-Pérot cavity resonance condition will appear [7]. The wavelength of the lossy dip corresponding to the resonance condition λ r can be expressed as Eq.…”

Section: The Antiresonant Reflecting Optical Waveguide Sensor 31 Thementioning

confidence: 99%

“…The wavelength of the lossy dip corresponding to the resonance condition λ r can be expressed as Eq. (1) [7,22]:…”

Section: The Antiresonant Reflecting Optical Waveguide Sensor 31 Thementioning

confidence: 99%

See 2 more Smart Citations

The Antiresonant Reflecting Optical Waveguide Fiber Sensor

Ye¹

2020

Electromagnetic Propagation and Waveguides in Photonics and Microwave Engineering [Working Title]

Self Cite

View full text Add to dashboard Cite

In this chapter, the optical fiber sensors based on antiresonant reflecting optical waveguide have been introduced, including the single layer, double layers, double resonators, and hybrid mechanism. Various optical fiber sensors based on antiresonant reflecting optical waveguide have been introduced in this chapter with different working principles, including the fiber optic vibration sensor, humidity sensor, strain sensor, temperature sensor, magnetic field sensor, biosensor, etc. Especially, many long-standing challenges in the fiber optic sensor can be solved through the working principle of the antiresonant reflecting optical waveguide, including the temperature cross-talk compensation, distribution localization, optofluidic biosensing, etc. In general, the optical fiber sensors based on antiresonant reflecting optical waveguide have advantages, such as compact structure, high sensitivity, large dynamic range, and high stability, which appear to have potential applications in researches of structure health monitoring, oil exploiting, and biology detection.

show abstract

Dual-mode interference microfiber vibration sensor based on rectangular beam with through hole

Liu

Zou

Yang

et al. 2021

2021 19th International Conference on Optical Communications and Networks (ICOCN)

View full text Add to dashboard Cite

Vibration Sensor Based on the Resonance Power Leakage in a Tapered Capillary Fiber

Cited by 10 publications

References 21 publications

Noninvasive Monitoring of Vital Signs Based on Highly Sensitive Fiber Optic Mattress

Noninvasive Monitoring of Vital Signs Based on Highly Sensitive Fiber Optic Mattress

The Antiresonant Reflecting Optical Waveguide Fiber Sensor

Dual-mode interference microfiber vibration sensor based on rectangular beam with through hole

Contact Info

Product

Resources

About