scholarly journals Highly sensitive surface plasmon resonance biosensor based on a low-index polymer optical fiber

2018 ◽  
Vol 26 (4) ◽  
pp. 3988 ◽  
Author(s):  
Shaoqing Cao ◽  
Yu Shao ◽  
Ying Wang ◽  
Tiesheng Wu ◽  
Longfei Zhang ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Optical Fiber ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Polymer Optical Fiber ◽  
Surface Plasmon Resonance Biosensor ◽  
Highly Sensitive

scholarly journals Highly Sensitive Surface Plasmon Resonance Humidity Sensor Based on a Polyvinyl-Alcohol-Coated Polymer Optical Fiber

Biosensors ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 461
Author(s):  
Ying Wang ◽  
Jingru Wang ◽  
Yu Shao ◽  
Changrui Liao ◽  
Yiping Wang
Keyword(s):  
Surface Plasmon Resonance ◽  
Polyvinyl Alcohol ◽  
Optical Fiber ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Humidity Sensor ◽  
Wavelength Shift ◽  
Polymer Optical Fiber ◽  
Human Breath ◽  
Highly Sensitive

A surface-plasmon-resonance-based fiber device is proposed for highly sensitive relative humidity (RH) sensing and human breath monitoring. The device is fabricated by using a polyvinyl alcohol (PVA) film and gold coating on the flat surface of a side-polished polymer optical fiber. The thickness and refractive index of the PVA coating are sensitive to environmental humidity, and thus the resonant wavelength of the proposed device exhibits a redshift as the RH increases. Experimental results demonstrate an average sensitivity of 4.98 nm/RH% across an ambient RH ranging from 40% to 90%. In particular, the sensor exhibits a linear response between 75% and 90% RH, with a sensitivity of 10.15 nm/RH%. The device is suitable for human breath tests and shows an average wavelength shift of up to 228.20 nm, which is 10 times larger than that of a silica-fiber-based humidity sensor. The corresponding response and recovery times are determined to be 0.44 s and 0.86 s, respectively. The proposed sensor has significant potential for a variety of practical applications, such as intensive care and human health analysis.

Phase-stepping technique for highly sensitive microscopic surface plasmon resonance biosensor

2014 ◽  
Vol 53 (5) ◽  
pp. 836 ◽  
Author(s):  
Chonglei Zhang ◽  
Rong Wang ◽  
Yijia Wang ◽  
Siwei Zhu ◽  
Changjun Min ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Surface Plasmon Resonance Biosensor ◽  
Phase Stepping ◽  
Highly Sensitive ◽  
Microscopic Surface

scholarly journals Surface-Plasmon-Resonance-Based Optical-Fiber Micro-Displacement Sensor with Temperature Compensation

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3210 ◽  
Author(s):  
Yong Wei ◽  
Ping Wu ◽  
Zongda Zhu ◽  
Lu Liu ◽  
Chunlan Liu ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Optical Fiber ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Temperature Compensation ◽  
Incident Beam ◽  
Resonance Wavelength ◽  
Displacement Sensor ◽  
Displacement Sensors ◽  
Highly Sensitive

Micro-displacement measurements play a crucial role in many industrial applications. Aiming to address the defects of existing optical-fiber displacement sensors, such as low sensitivity and temperature interference, we propose and demonstrate a novel surface plasmon resonance (SPR)-based optical-fiber micro-displacement sensor with temperature compensation. The sensor consists of a displacement-sensing region (DSR) and a temperature-sensing region (TSR). We employed a graded-index multimode fiber (GI-MMF) to fabricate the DSR and a hetero-core structure fiber to fabricate the TSR. For the DSR, we employed a single-mode fiber (SMF) to change the radial position of the incident beam as displacement. The resonance angle in the DSR is highly sensitive to displacement; thus, the resonance wavelength of the DSR shifts. For the TSR, we employed polydimethylsiloxane (PDMS) as a temperature-sensitive medium, whose refractive index is highly sensitive to temperature; thus, the resonance wavelength of the TSR shifts. The displacement and temperature detection ranges are 0–25 μm and 20–60 °C; the displacement and temperature sensitivities of the DSR are 4.24 nm/μm and −0.19 nm/°C, and those of the TSR are 0.46 nm/μm and −2.485 nm/°C, respectively. Finally, by means of a sensing matrix, the temperature compensation was realized.

A surface plasmon resonance sensor based on a single mode D-shape polymer optical fiber

2016 ◽  
Vol 19 (2) ◽  
pp. 025001 ◽  
Author(s):  
Katarzyna Gasior ◽  
Tadeusz Martynkien ◽  
Maciej Napiorkowski ◽  
Kinga Zolnacz ◽  
Pawel Mergo ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Optical Fiber ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Single Mode ◽  
Surface Plasmon Resonance Sensor ◽  
Polymer Optical Fiber ◽  
Resonance Sensor
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