A novel approach for simultaneous sensing of urea and glucose by SPR based optical fiber multianalyte sensor

The Analyst ◽  
2014 ◽  
Vol 139 (6) ◽  
pp. 1449 ◽  
Author(s):  
Roli Verma ◽  
Banshi D. Gupta
2020 ◽  
Vol 69 (10) ◽  
pp. 8009-8019
Author(s):  
Nunzio Cennamo ◽  
Francesco Arcadio ◽  
Fiore Capasso ◽  
Chiara Perri ◽  
Girolamo D'Agostino ◽  
...  
Keyword(s):  

2014 ◽  
Vol 1052 ◽  
pp. 447-453
Author(s):  
Ya Juan Yang ◽  
Zhi Yong Wang ◽  
Xiao Ping Yang ◽  
Yong Xin Shao

The technology of fluorescent optical fiber temperature measurement has been used in many fields to accurately measure the variations of temperature, especially in some extreme environment, such as strong electromagnetic interference under, high voltage conditions. Wavelet analysis is the most frequent method used for signal processing in this technology. This method has excellent local characteristics and its precise of processing is high, whereas its result relies heavily on the selection of the wavelet basis, and has certain limitation. In this paper, a novel approach for fluorescent signal processing based on Hilbert-Huang transform is presented. A given signal is decomposed into a collection of intrinsic mode functions (IMF) by empirical mode decomposition, then Hilbert spectral analysis is performed for each of the IMF. According to the difference of signal and noise characteristics, HHT can generate adaptive modal functions and remove the noise from signal effectively, so that the signal to noise ratio can be improved. The result of experiment shows that HHT features convenient usage, fast processing and high resolution in time and frequency domains.


2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Montasir Qasymeh

We propose and theoretically investigate a novel approach for generating terahertz (THz) radiation in a standard single-mode fiber. The optical fiber is mediated by an electrostatic field, which induces an effective second-order nonlinear susceptibility via the Kerr effect. The THz generation is based on difference frequency generation (DFG). A dispersive fiber Bragg grating (FBG) is utilized to phase match the two interacting optical carriers. A ring resonator is utilized to boost the optical intensities in the biased optical fiber. A mathematical model is developed which is supported by a numerical analysis and simulations. It is shown that a wide spectrum of a tunable THz radiation can be generated, providing a proper design of the FBG and the optical carriers.


2021 ◽  
Author(s):  
Esther Renner ◽  
Lisa-Sophie Haerteis ◽  
Nico Weiss ◽  
Bernhard Schmauss

2013 ◽  
Vol 303-306 ◽  
pp. 55-58
Author(s):  
Cheng Long Liu ◽  
Zi Nan Wang ◽  
Qian Qian Cheng ◽  
Hayrigul Osman ◽  
Chao Peng ◽  
...  

We propose and demonstrate an optical fiber acoustic sensor based on air backing mandrel type fiber optic hydrophone. This novel approach to sensing sounds in the air has not been utilized before and has the advantage that the sensor doesn’t need electric power supply when it is working. To prove the feasibility of such an optical fiber acoustic sensor, we make a model and set up experiment to get the acoustic waves response curve in frequency. Because of its simple mechanical structure, the sensor is robust and shows a good application prospect.


2010 ◽  
Vol 81 (4) ◽  
pp. 045108 ◽  
Author(s):  
Atul Kulkarni ◽  
Hyeongkeun Kim ◽  
Jaeboong Choi ◽  
Taesung Kim

1987 ◽  
Vol 5 (1) ◽  
pp. 70-76 ◽  
Author(s):  
N. Amitay ◽  
H. Presby ◽  
F. DiMarcello ◽  
K. Nelson

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