Fiber optic SPR sensing of liquids using copper and zinc oxide

Kapoor, Vicky; Sharma, Navneet K.; Gupta, Sakshi; Kumar, Parveen

doi:10.1016/j.ijleo.2021.166727

Cited by 11 publications

(7 citation statements)

References 26 publications

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“…147 Kapoor et al reported the use of bilayers of copper− zinc oxide in sensing the refractive index of liquids by fiberoptic SPR sensor. 148 Sensitivity increases with increasing zinc oxide layer thickness until 15 nm and then decreases above this value. On the other hand, last year Wu et al proposed an optical fiber capped with a ZnO microwire whereby the tip acts as a Fabry−Perot cavity for monitoring deep UV light.…”

Section: ■ Conclusion and Way Forwardmentioning

confidence: 94%

“…A more practical approach would be to embed nanostructures that can provide gain, for example, ZnO, GaN, and GaAs. Implementing ZnO in fiber has successfully been demonstrated for other applications, mostly for sensing. − Several detection mechanisms have been put forth. For instance, Bora et al reported average coupling efficiency of ∼2.65% that changes the sensitivity when exposed to different chemical vapors .…”

Section: Conclusion and Way Forwardmentioning

confidence: 99%

“…For instance, Bora et al reported average coupling efficiency of ∼2.65% that changes the sensitivity when exposed to different chemical vapors . Kapoor et al reported the use of bilayers of copper–zinc oxide in sensing the refractive index of liquids by fiberoptic SPR sensor . Sensitivity increases with increasing zinc oxide layer thickness until 15 nm and then decreases above this value.…”

Section: Conclusion and Way Forwardmentioning

confidence: 99%

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Review of Open Cavity Random Lasers as Laser-Based Sensors

et al. 2022

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In this review, the concept of open cavity lasing for ultrasensitive sensing is explored, specifically in driving important innovations as laser-based biosensorsa field mostly dominated by fluorescence-based sensing. Laser-based sensing exhibits higher signal amplification and lower signal-to-noise ratio due to narrow emission lines as well as high sensitivity due to nonlinear components. The versatility of open cavity random lasers for probing analytes directly which is ultrasensitive to small changes in chemical composition and temperature fluctuations paves the path of utilizing narrow emission lines for advanced sensing. The concept of random lasing is first explained followed by a comparison of the different lasing threshold that has been reported. This is followed by a survey of reports on laser-based sensing and more specifically as biosensors. Finally, a perspective on the way forward for open cavity laser-based sensing is put forth.

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Section: ■ Conclusion and Way Forwardmentioning

confidence: 94%

Section: Conclusion and Way Forwardmentioning

confidence: 99%

Section: Conclusion and Way Forwardmentioning

confidence: 99%

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Review of Open Cavity Random Lasers as Laser-Based Sensors

et al. 2022

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“…The total reflectivity 𝑅 for the sensor of sensing length 𝑙 and with number of reflections 𝑚 is determined using (10) [29], 𝑅 = 𝑅′ 𝑚 (10) where 𝑚 = 𝑙/(2𝑑 1 𝑡𝑎𝑛𝜃). Since intensity interrogation technique is used in this study, the sensor sensitivity 𝑆 is determined by (11) [29].…”

Section: Structure Design and Modelingmentioning

confidence: 99%

“…In recent years, optical fiber surface plasmon resonance (SPR) sensors have achieved a high impact due to their high performance. They have been used in various sensing applications, such as biosensing [7], disease diagnosis [8], corrosion monitoring [9], water quality detection [10], and liquid detection [11], [12]. Researchers have developed distinct structures of these sensors in order to enhance their sensing performance.…”

Section: Introductionmentioning

confidence: 99%

Few-mode optical fiber surface plasmon resonance sensor with controllable range of measured refractive index

Shehab

Salah²,

Al-Sawalmeh³

et al. 2023

IJECE

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A few-mode optical fiber surface plasmon resonance sensor with graphene layer is investigated, firstly, with the aim of studying the behavior of the guided modes and, secondly, with the aim of determining the range of the measured refractive index for some selected few-mode fibers. The results show that as the number of modes propagated in the fiber increases, the maximum sensitivity of a particular mode decreases while the range of the measured refractive index of that mode increases. Also, it is shown that the range can be easily tuned with sensitivity consideration by only adjusting the operating wavelength without any modification of the sensor, which is desirable from practical point of view. In addition, it is shown that the core diameter of the fiber should be chosen according to sensitivity and range needing, where a compromise between them must be found. The study presented in this paper can significantly help in developing new sensing techniques, such as multi-parameter sensing, by monitoring the various responses of the modes. Also, it can be used to customize the sensor for specific sensing applications in various fields, especially to measure refractive indices in subranges of 1.38 to 1.46.

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Experimental investigation of indium tin oxide and indium nitride based fiber optic surface plasmon resonance sensor

Kapoor,

Sharma

2023

Opt Quant Electron

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Fiber optic SPR sensing of liquids using copper and zinc oxide

Cited by 11 publications

References 26 publications

Review of Open Cavity Random Lasers as Laser-Based Sensors

Review of Open Cavity Random Lasers as Laser-Based Sensors

Few-mode optical fiber surface plasmon resonance sensor with controllable range of measured refractive index

Experimental investigation of indium tin oxide and indium nitride based fiber optic surface plasmon resonance sensor

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