Theoretical modeling of a coupled plasmon waveguide resonance sensor based on multimode optical fiber

2018 ◽  
Vol 410 ◽  
pp. 552-558 ◽  
Author(s):  
Kun Liu ◽  
Meng Xue ◽  
Junfeng Jiang ◽  
Tao Wang ◽  
Pengxiang Chang ◽  
...  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hyeong-Min Kim ◽  
Dae Hong Jeong ◽  
Ho-Young Lee ◽  
Jae-Hyoung Park ◽  
Seung-Ki Lee

AbstractA simple optical fiber sensor based on localized surface plasmon resonance was constructed for direct and rapid measurement of thyroglobulin (Tg). Specific tests for Tg in patients that have undergone thyroidectomy are limited because of insufficient sensitivity, complicated procedures, and in some cases, a long time to yield a result. A sensitive, fast, and simple method is necessary to relieve the psychological and physical burden of the patient. Various concentrations of Tg were measured in a microfluidic channel using an optical fiber sensor with gold nanoparticles. The sensor chip has a detection limit of 93.11 fg/mL with no specificity for other antigens. The potential applicability of the Tg sensing system was evaluated using arbitrary samples containing specific concentrations of Tg. Finally, the sensor can be employed to detect Tg in the patient’s serum, with a good correlation when compared with the commercial kit.


Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1516
Author(s):  
Lian Liu ◽  
Shijie Deng ◽  
Jie Zheng ◽  
Libo Yuan ◽  
Hongchang Deng ◽  
...  

An enhanced plastic optical fiber (POF)-based surface plasmon resonance (SPR) sensor is proposed by employing a double-sided polished structure. The sensor is fabricated by polishing two sides of the POF symmetrically along with the fiber axis, and a layer of Au film is deposited on each side of the polished region. The SPR can be excited on both polished surfaces with Au film coating, and the number of light reflections will be increased by using this structure. The simulation and experimental results show that the proposed sensor has an enhanced SPR effect. The visibility and full width at half maximum (FWHM) of spectrum can be improved for the high measured refractive index (RI). A sensitivity of 4284.8 nm/RIU is obtained for the double-sided POF-based SPR sensor when the measured liquid RI is 1.42. The proposed SPR sensor is easy fabrication and low cost, which can provide a larger measurement range and action area to the measured samples, and it has potential application prospects in the oil industry and biochemical sensing fields.


2018 ◽  
Vol 26 (14) ◽  
pp. 18436 ◽  
Author(s):  
Liang Deng ◽  
Joseph D. Yan ◽  
Daniel S. Elson ◽  
Lei Su

Author(s):  
Georgia Konstantinou ◽  
Damien Loterie ◽  
Eirini Kakkava ◽  
Demetri Psaltis ◽  
Christophe Moser

1979 ◽  
Vol 4 (1) ◽  
pp. 27 ◽  
Author(s):  
Masahiro Nunoshita ◽  
Yoshinori Nomura ◽  
Teruhito Matsui ◽  
Takashi Nakayama

2017 ◽  
Vol 25 (6) ◽  
pp. 7031 ◽  
Author(s):  
Edgar E. Morales-Delgado ◽  
Loic Urio ◽  
Donald B. Conkey ◽  
Nicolino Stasio ◽  
Demetri Psaltis ◽  
...  

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