Microfiber Fabry-Perot interferometer used as a temperature sensor and an optical modulator

Li, Jin; Yang, Juntong; Zhang, Yue; Ren, Chunqiao

doi:10.1016/j.optlastec.2020.106296

Cited by 39 publications

(11 citation statements)

References 21 publications

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“…The temperature sensitivity of the proposed sensor is the highest when compared to other sensors. Among them, compared to the sensor proposed in [4,8,38], the sensor we proposed has higher sensitivity and occupies a smaller bandwidth. The measurement range of the proposed sensor is smaller than the sensor proposed in [4,38,39], but we can change the design parameters to expand the measurement range, and this is at the expense of sensitivity.…”

Section: Experiments and Discussionmentioning

confidence: 99%

“…Among them, compared to the sensor proposed in [4,8,38], the sensor we proposed has higher sensitivity and occupies a smaller bandwidth. The measurement range of the proposed sensor is smaller than the sensor proposed in [4,38,39], but we can change the design parameters to expand the measurement range, and this is at the expense of sensitivity. To further improve the sensitivity of the Vernier effect, a light source with a larger bandwidth and a higher resolution device are required.…”

Section: Experiments and Discussionmentioning

confidence: 99%

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Study of the Vernier Effect Based on the Fabry–Perot Interferometer: Methodology and Application

et al. 2021

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The optical Vernier effect is a powerful tool for improving the sensitivity of an optical sensor, which relies on the use of two sensor units with slightly detuned frequencies. However, an improper amount of detuning can easily cause the Vernier effect to be unusable. In this work, the effective generation range of the Vernier effect and the corresponding interferometer configuration are suggested and experimentally demonstrated through a tunable cascaded Fabry–Perot interferometer structure. We further demonstrate a practical method to increase the magnification factor of the Vernier effect based on the device bandwidth. Only the optical path length of an interferometer probe and the sensitivity of the measurement parameters are needed to design this practical interferometer based on the Vernier effect. Our results provide potential insights for the sensing applications of the Vernier effect.

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Section: Experiments and Discussionmentioning

confidence: 99%

Section: Experiments and Discussionmentioning

confidence: 99%

Study of the Vernier Effect Based on the Fabry–Perot Interferometer: Methodology and Application

et al. 2021

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“…Furthermore, the work with SMF fiber attached to the sensing head with a diameter of 32 mm x 16 mm, which is much bigger than fibers, can make it difficult to keep the stability of the measurement process. The slightly different variant of the construction is presented by Li et al [110] Authors aligned SMF and microfiber inside the capillary filled with PDMS. As above they obtain in-line FPI due to the reflection of light by the boundaries SMF/PDMS and PDMS/microfiber.…”

Section: In-line Pof Fpi For Temperature Sensingmentioning

confidence: 99%

Temperature Sensors based on Polymer Fiber Optic Interferometer

Jędrzejewska‐Szczerska¹

2022

Preprint

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Temperature measurements are of great importance in many fields of human activities, including industry, technology, and science. For example, obtaining a certain temperature value or a sudden change in it can be the primary control marker of a chemical process. Fiber optic sensors have remarkable properties giving a broad range of applications. They enable continuous real-time temperature control in difficult-to-reach areas, in hazardous working environments (air pollution, chemical or ionizing contamination), and the presence of electromagnetic disturbances. The use of fiber optic temperature sensors in polymer technology can significantly reduce the cost of their production. Moreover, the installation process and usage would be simplified. As a result, these types of sensors would becoming increasingly popular in industrial solutions. This review provides a critical overview of the latest development of fiber optic temperature sensors based on Fabry-Perot interferometer made with polymer technology.

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“…This paper proposes a cascaded FPIs vernier effect temperature sensor, which uses polydimethylsiloxane (PDMS) as the heat-sensitive medium and few mode fiber (FMF) is used as the transmission medium. Due to the good thermal sensitivity of PDMS [13], the thermal sensitivity of this sensor is greatly improved compared with the traditional all-fiber F-P sensors. Compared with MMF and SMF, FMF can hold no more than ten modes.…”

Section: Introductionmentioning

confidence: 99%

A Few Mode Fiber Temperature Sensor Filled With PDMS Based on Vernier Effect

Ran

et al. 2021

IEEE Photonics J.

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A few mode fiber temperature sensor filled with PDMS based on vernier effect is proposed. It uses single mode fiber (SMF), few mode fiber (FMF), and polydimethylsiloxane (PDMS) to form the SMF-air microcavity-FMF-PDMS-FMF structure. It is to slot the glass capillary tube, place the two FMFs in the slot at a suitable distance, and fill the slot with PDMS multiple times and seal it. The PDMS is used as a sensing microcavity. We insert the SMF from the other end of the glass capillary tube, adjust the distance, fix the SMF and seal the connection. Two end faces of the SMF and the first FMF form an air reference microcavity. Since the refractive index of each medium is different, multiple reflective surfaces are formed to reflect. Because the second FMF is infinitely long, whose right end is beveled, it is considered that the sensor has four reflected beams. When the temperature changes, the length and refractive index of the PDMS microcavity will change, which will cause a change in the interference spectrum of the sensor. And because the vernier effect is formed by the superposition of the two microcavities, the temperature sensitivity can be amplified and the temperature can be measured with high sensitivity. The experimental results show that in the range of 40-56°C, the transmission spectrum of the sensor appears red shift with the increase of temperature, and the temperature sensitivity can reach 3.89nm/°C. The sensor is simple to manufacture, has high sensitivity, and has good application prospects.

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Microfiber Fabry-Perot interferometer used as a temperature sensor and an optical modulator

Cited by 39 publications

References 21 publications

Study of the Vernier Effect Based on the Fabry–Perot Interferometer: Methodology and Application

Study of the Vernier Effect Based on the Fabry–Perot Interferometer: Methodology and Application

Temperature Sensors based on Polymer Fiber Optic Interferometer

A Few Mode Fiber Temperature Sensor Filled With PDMS Based on Vernier Effect

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