Optical fiber refractive index sensor with low detection limit and large dynamic range using a hybrid fiber interferometer

Li, Xuegang; Warren‐Smith, Stephen C.; Ebendorff‐Heidepriem, Heike; Zhang, Yanan; Nguyen, Linh V.

doi:10.1109/jlt.2019.2908023

Cited by 33 publications

(14 citation statements)

References 40 publications

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“…The C-fiber used to form the microcavity is a silica capillary with one side open to allow for fluid ingress [ 45 ]. It was fabricated in-house using a two-step technique, which we have previously used to fabricate exposed core microstructured optical fiber [ [46] , [47] , [48] ]. Briefly, a preform was first fabricated by ultrasonic drilling a central hole and the cutting the open slot.…”

Section: Methodsmentioning

confidence: 99%

All-fiber all-optical quantitative polymerase chain reaction (qPCR)

Nguyen

Hill

et al. 2020

Sensors and Actuators B: Chemical

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Highlights Quantitative polymerase chain reaction (qPCR) in an all-fiber all-optical configuration. Thermal cycling and fluorescence detection in a single optical-fiber-integrated device. Advantages of small sample volume, portability and high-speed operation. Potential ability to operate fluorescence-free through direct measurement of refractive index. Target application is disease and pathogen detection in remote communities.

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Section: Methodsmentioning

confidence: 99%

All-fiber all-optical quantitative polymerase chain reaction (qPCR)

Nguyen

Hill

et al. 2020

Sensors and Actuators B: Chemical

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“…To achieve the above objectives, an innovative SOC sensing scheme for the VRFB based on AGFFPI is proposed in this paper. The theoretical analysis and system design for sensing the RI of various liquids using fiber interferometer (FI) can be found in [26,27]. The proposed AGFFPI based SOC sensing device is able to estimate the SOC through precisely sensing the RI values of the VRFB's positive electrolyte.…”

Section: Introductionmentioning

confidence: 99%

A Novel State of Charge Estimating Scheme Based on an Air-Gap Fiber Interferometer Sensor for the Vanadium Redox Flow Battery

2020

Energies

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Real-time and remote monitoring of the state of charge (SOC) of a vanadium redox flow battery (VRFB) is technically desirable for achieving advanced compensation functions of VRFB systems. This paper, for the first time, proposes a novel SOC monitoring scheme based on an air-gap fiber Fabry–Perot interferometer (AGFFPI) sensor for the VRFB. The proposed sensing concept is based on real-time sensing of the refractive index (RI) of the positive electrolyte, which is found closely correlated to the VRFB’s SOC. The proposed SOC estimating scheme using fiber sensor has a number of merits, e.g., being precise, having lightweight, having strong acid resistance, and being easy to incorporate the state-of-the-art fiber communication technology for remote monitoring. It is found that the RI of the positive electrolyte solution exhibits distinct and linear variations in accordance with changes of the VRFB’s SOC value. Using the linear relationship between the electrolyte’s RI and SOC, a real-time SOC monitoring mechanism can be readily realized by the proposed AGFFPI. In this paper, existing SOC detecting methods for VRFB are firstly reviewed. The details concerning the proposed detecting method are then addressed. Typical experimental results are presented to verify the feasibility and effectiveness of the proposed SOC estimating scheme.

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“…1,2 Silica optical ber evanescent wave sensors are an example of large-scale analytical instruments that are used in devices for incorporating biological recognition elements 3,4 and monitoring parameters such as a wide range of gases, 5,6 pH, 7 temperature, 8 humidity, 9,10 ions 11 and refractive index. [12][13][14] This wide application range is due to its robustness, immunity to electromagnetic interference, high sensitivity, high selectivity, high integration, and potential portability for in situ and online measurements. 15 However, silica optical ber-based sensors because of their low tensile strength are brittle; therefore, sensor manufacturing, connectorization, installing and terminating processes are difficult, especially in harsh environments.…”

Section: Introductionmentioning

confidence: 99%

The impact of ZnO configuration as an external layer on the sensitivity of a bi-layer coated polymer optical fiber probe

Samavati

Ismail

et al. 2020

RSC Adv.

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Optical fiber refractive index sensor with low detection limit and large dynamic range using a hybrid fiber interferometer

Abstract: Optical fiber refractive index sensor with low detection limit and large dynamic range using a hybrid fiber interferometer

Cited by 33 publications

References 40 publications

All-fiber all-optical quantitative polymerase chain reaction (qPCR)

All-fiber all-optical quantitative polymerase chain reaction (qPCR)

A Novel State of Charge Estimating Scheme Based on an Air-Gap Fiber Interferometer Sensor for the Vanadium Redox Flow Battery

The impact of ZnO configuration as an external layer on the sensitivity of a bi-layer coated polymer optical fiber probe

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