Reflective SPR Sensor for Simultaneous Measurement of Nitrate Concentration and Temperature

Han

Laser & Photonics Reviews

et al. 2022

Self Cite

Fiber optic sensors based on surface plasmon resonance (SPR) have demonstrated outstanding performance in biomedical, environmental monitoring, public safety, and other aspects, which provide powerful platforms for qualitative detection and quantitative analysis of molecular interactions. Among them, multichannel fiber optic SPR sensor has become a core tool in parallel detection scenarios due to the superiorities of compensating for nonspecific binding and environmental fluctuations and implementing multianalyte determination. The realization methods of multichannel sensing revolve around fiber microstructures, enhancement by materials, and hybrid fiber. The applications of multichannel fiber optic SPR sensors are demonstrated in sensing of liquid refractive index (RI), RI and temperature, biochemical molecules, and physical parameters. This review thoroughly analyzes and compares the structure, excitation effect, sensing performance, and the advantages and disadvantages of each type of multichannel fiber optic SPR sensor. Even though there are still some challenges, such as insufficient sensing channels and difficulty in fabrication, in their advancement, efforts in multidiscipline including developing high-performance sensitive films and innovating micro-nano fabrication processes will overcome these bottlenecks. Lastly, the future development directions of multichannel fiber optic SPR sensors from principle, structure, and material aspects are discussed.

Section: Multichannel Sensing Of Biochemical Moleculesmentioning

confidence: 99%

Multichannel Fiber Optic SPR Sensors: Realization Methods, Application Status, and Future Prospects

Han

Laser & Photonics Reviews

et al. 2022

Self Cite

“…Therefore, the multi-parameter SPR sensors have attracted much attention [21]. Recently, more and more research has shifted the focus to optical-fiber-based multi-parameter SPR sensors, for example, the simultaneous measurement of salinity, temperature, and pressure [22]; the simultaneous measurement of temperature and magnetic field strength [23]; the simultaneous measurement of solution concentration and temperature [24]; and the simultaneous measurement of RI and temperature [25][26][27][28]. However, to our knowledge, there are few reports about optical-fiber-based SPR sensors for simultaneous measurement of RI and liquid level.…”

Section: Introductionmentioning

confidence: 99%

Side-Polish Plastic Optical Fiber Based SPR Sensor for Refractive Index and Liquid-Level Sensing

Teng

Ying

Min

et al. 2022

Sensors

In this work, a simple side-polish plastic optical fiber (POF)-based surface plasmon resonance (SPR) sensor is proposed and demonstrated for simultaneous measurement of refractive index (RI) and liquid level. The effects of side-polish depths on the sensing performance were studied. The experimental results show that the SPR peak wavelength will be changed as the RI changes, and the SPR peak intensity will be changed with the liquid level variation. By monitoring the changes in peak wavelength and intensity, the RI and liquid level can be detected simultaneously. Experimental results show that an RI sensitivity of 2008.58 nm/RIU can be reached at an RI of 1.39. This sensor has the advantages of simple structure and low cost, which has a good prospect in the field of biochemical sensing.

Journal of Biophotonics

“…Various methods for creating optical fiber biosensors have been proposed, such as fiber Bragg‐gratings [20–25], long period fiber gratings [26], fiber interferometers [27–30], Brillouin/Raman scattering [31], surface Plasmon resonance [32–35], lossy‐mode resonance [36], interferometer [37–41] and specialty fiber couplers [42]. Among them, the biosensors based on optical fiber interferometer are particularly attractive.…”

Section: Introductionmentioning

confidence: 99%

A review of specialty fiber biosensors based on interferometer configuration

Chen

Zhou

et al. 2021

Optical fiber biosensors have attracted extensive research attention in fields such as public health research, environmental science, bioengineering, disease diagnosis and drug research. Accurate detection of biomolecules is essential to limit the extent of disease outbreaks and provide valuable guidance for regulatory agencies to take timely measures. Among many optical fiber sensors, optical fiber biosensors based on specialty fibers have the advantages of biocompatibility, small size, high measurement resolution, high stability and immunity to electromagnetic interference. In this paper, four types interferometer biosensors based on specialty fiber, namely Mach‐Zehnder interferometer, Michelson interferometer, Fabry ‐ Perot interferometer and Sagnac interferometer, are reviewed in terms of operating principles, sensing structure and application fields. The fiber types are further divided into micro‐nano optical fiber, thin core fiber, polarization maintaining fiber, polymer fiber, microstructure optical fiber. Furthermore, this paper evaluates the advantages and disadvantages of these interferometer biosensors. Finally, main challenging problems and expectational development direction of specialty fiber interferometer biosensors are summarized. This text clearly shows the huge development potential of optical fiber biosensors in biomedical.