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  • Received: Apr. 17, 2020

    Accepted: Jun. 1, 2020

    Posted: Aug. 6, 2020

    Published Online: Aug. 7, 2020

    The Author Email: Zhijun Yan (yanzhijun@gmail.com)

    DOI: 10.3788/COL202018.100601

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    Yarien Moreno, Qingguo Song, Zhikun Xing, Yuezhen Sun, Zhijun Yan. Hybrid tilted fiber gratings-based surface plasmon resonance sensor and its application for hemoglobin detection[J]. Chinese Optics Letters, 2020, 18(10): 100601

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Chinese Optics Letters, Vol. 18, Issue 10, 100601 (2020)

Hybrid tilted fiber gratings-based surface plasmon resonance sensor and its application for hemoglobin detection

Yarien Moreno1,3, Qingguo Song1, Zhikun Xing1, Yuezhen Sun1, and Zhijun Yan1,2,*

Author Affiliations

  • 1School of Optical and Electronic Information, NGIA, Huazhong University of Science and Technology, Wuhan 430074, China
  • 2Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
  • 3Faculty of Informatics, Electronics and Communications, Universidad de Panamá, Panama City, Republic of Panama

Abstract

We proposed a hybrid tilted fiber gratings (polarizing grating and tilted fiber Bragg grating)-based surface plasmon resonance (SPR) sensor. The hybrid tilted fiber grating, consisting of a polarizing grating and tilted fiber Bragg grating (TFBG), is fabricated in a single-mode fiber in series by using a UV-inscription technique, in which the TFBG could generate a dense cladding mode resonance to excite SPR and the polarizing grating could filter out the S-polarization cladding mode of the TFBG. Such proposed hybrid tilted fiber gratings could greatly simplify the interrogation system of the TFBG-based SPR sensor. The experiment results showed that the hybrid tilted fiber gratings-based SPR sensor has the refractive index sensitivity of 522.8 nm/RIU. Finally, by using the proposed sensor, we have achieved the hemoglobin concentration detection within a sensing range from 0.1 mg/mL to 1.0 mg/mL and the sensitivity of 8.144 nm/(mg/mL).

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