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Taper biosensor in fiber ring laser cavity for protein detection

Mansor, M. and Abu Bakar, M. H. and Omar, M. F. and Mustapha Kamil, Y. and Zainol Abidin, N. H. and Mustafa, F. H. and Mahdi, M. A. (2020) Taper biosensor in fiber ring laser cavity for protein detection. Optics and Laser Technology, 125 . p. 106033. ISSN 0030-3992

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Official URL: http://dx.doi.org/10.1016/j.optlastec.2019.106033


This paper demonstrates the integration of a bio-functionalized tapered fiber sensor in a fiber laser cavity for sensing of biological molecules. Interferometric effect from the taper generated single wavelength lasing output that was spatially measured to detect any changes. The sensing performance of the integrated system was assessed by immersing the biosensor in various concentrations of avidin ranging from 1 to 10 pM at laser threshold (40 mW) and at the maximum pump power of 200 mW. Selectivity of the sensor was ensured by immobilizing biotin on the surface of the tapered region that would act as complementary molecules to avidin. The proposed setup obtained sensitivity values of 0.40 nm/pM and 1.02 nm/pM at pump power of 40 mW and 200 mW, respectively. The integrated system simplifies the sensing output and analysis without compromising the performance of tapered optical fiber-based biosensor.

Item Type:Article
Uncontrolled Keywords:Biosensor, Fiber laser
Subjects:Q Science > QC Physics
ID Code:90587
Deposited By: Widya Wahid
Deposited On:30 Apr 2021 22:48
Last Modified:30 Apr 2021 22:48

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