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Sensing performance of apodized fiber Bragg gratings having linearly tapered profile.

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Title: Sensing performance of apodized fiber Bragg gratings having linearly tapered profile.
Authors: Maiti, Souryadipta1 (AUTHOR), Prakash, Suraj2 (AUTHOR), Singh, Vivek1 (AUTHOR) viveks@bhu.ac.in
Source: Optical & Quantum Electronics. Jul2023, Vol. 55 Issue 7, p1-14. 14p.
Subjects: Fiber Bragg gratings, Apodization, Transfer matrix, Bessel functions, Bragg gratings
Abstract: The sensing performance of a linearly tapered and apodized fiber Bragg grating is estimated and optimized. Coupled mode theory in association with the transfer matrix method is utilized to develop the reflectance formula of the proposed sensor. The reflectance spectra of linearly tapered fiber Bragg gratings are plotted for various apodization profiles. The sensitivity, detection accuracy, and quality parameter of proposed sensor are compared with standard fiber Bragg grating and linearly tapered fiber Bragg gratings-based sensors. It is found that the tapering in the waveguide along with apodization further improves the sensing performance of the sensor. Although the maximum sensitivity 489 nm/RIU is obtained in Hamming apodization and maximum left side lobe − 152 dB is obtained in Barthann apodization function, these apodizations show poor detection accuracy and quality parameters due to their larger value of full width at half maxima of sensing signal. The Bessel apodization function shows maximum detection accuracy (1366) and quality parameter (420/RIU) in our all-considered linearly tapered apodized structures. Followed by Bessel apodized sensor, the Blackman apodized sensor also shows higher detection accuracy (1340) and quality parameter (412/RIU). Therefore, these two apodization functions are recommended for biosensing applications in such a tapered structure. [ABSTRACT FROM AUTHOR]
Copyright of Optical & Quantum Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Sensing performance of apodized fiber Bragg gratings having linearly tapered profile.
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  Data: <searchLink fieldCode="JN" term="%22Optical+%26+Quantum+Electronics%22">Optical & Quantum Electronics</searchLink>. Jul2023, Vol. 55 Issue 7, p1-14. 14p.
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  Data: <searchLink fieldCode="DE" term="%22Fiber+Bragg+gratings%22">Fiber Bragg gratings</searchLink><br /><searchLink fieldCode="DE" term="%22Apodization%22">Apodization</searchLink><br /><searchLink fieldCode="DE" term="%22Transfer+matrix%22">Transfer matrix</searchLink><br /><searchLink fieldCode="DE" term="%22Bessel+functions%22">Bessel functions</searchLink><br /><searchLink fieldCode="DE" term="%22Bragg+gratings%22">Bragg gratings</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The sensing performance of a linearly tapered and apodized fiber Bragg grating is estimated and optimized. Coupled mode theory in association with the transfer matrix method is utilized to develop the reflectance formula of the proposed sensor. The reflectance spectra of linearly tapered fiber Bragg gratings are plotted for various apodization profiles. The sensitivity, detection accuracy, and quality parameter of proposed sensor are compared with standard fiber Bragg grating and linearly tapered fiber Bragg gratings-based sensors. It is found that the tapering in the waveguide along with apodization further improves the sensing performance of the sensor. Although the maximum sensitivity 489 nm/RIU is obtained in Hamming apodization and maximum left side lobe − 152 dB is obtained in Barthann apodization function, these apodizations show poor detection accuracy and quality parameters due to their larger value of full width at half maxima of sensing signal. The Bessel apodization function shows maximum detection accuracy (1366) and quality parameter (420/RIU) in our all-considered linearly tapered apodized structures. Followed by Bessel apodized sensor, the Blackman apodized sensor also shows higher detection accuracy (1340) and quality parameter (412/RIU). Therefore, these two apodization functions are recommended for biosensing applications in such a tapered structure. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Optical & Quantum Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11082-023-04888-5
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      – Code: eng
        Text: English
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        PageCount: 14
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      – SubjectFull: Fiber Bragg gratings
        Type: general
      – SubjectFull: Apodization
        Type: general
      – SubjectFull: Transfer matrix
        Type: general
      – SubjectFull: Bessel functions
        Type: general
      – SubjectFull: Bragg gratings
        Type: general
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      – TitleFull: Sensing performance of apodized fiber Bragg gratings having linearly tapered profile.
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            NameFull: Maiti, Souryadipta
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            NameFull: Prakash, Suraj
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            NameFull: Singh, Vivek
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            – D: 01
              M: 07
              Text: Jul2023
              Type: published
              Y: 2023
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            – TitleFull: Optical & Quantum Electronics
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