Ionizing radiation profiling through the induced refractive index change in backscattering-enhanced optical fibers

Massimo Olivero; Aurora Bellone; Martha Segura; Wilfried Blanc; Franck Mady; Mourad Benabdesselam; Daniele Tosi; Guido Perrone

doi:10.1117/12.2624401

Ionizing radiation profiling through the induced refractive index change in backscattering-enhanced optical fibers

Massimo Olivero, Aurora Bellone, Martha Segura, Wilfried Blanc, Franck Mady, Mourad Benabdesselam, Daniele Tosi, Guido Perrone

School of Engineering and Digital Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Enhanced Rayleigh backscattering optical fibers, interrogated by an optical frequency domain reflectometer, are used to perform remote real-time measurements of X-ray irradiation profiles, with possible application as dosimeters in radiotherapy treatments. The enhanced Rayleigh backscattering is obtained by proper engineering of the composition of fiber core, either by introduction of Aluminum or Magnesium silicate nanoparticles as radiation-sensitive dopants. A detectable radiation-induced refractive index change can be spatially resolved through the measurement of the frequency shift of the Rayleigh backscattering along the fiber. It is experimentally demonstrated that two mechanisms of radiation-induced refractive index change take place. At doses nearly compatible with those delivered in radiotherapy, a negative refractive index is induced, whereas at high doses the change is positive. This behavior is also confirmed by the shift of Bragg wavelength of a fiber Bragg grating inscribed in the nanoparticles-doped fiber and used as a reference.

Original language	English
Title of host publication	Fiber Lasers and Glass Photonics
Subtitle of host publication	Materials through Applications III
Editors	Maurizio Ferrari, Angela B. Seddon, Stefano Taccheo, Stefano Taccheo
Publisher	SPIE
ISBN (Electronic)	9781510651609
DOIs	https://doi.org/10.1117/12.2624401
Publication status	Published - 2022
Event	Fiber Lasers and Glass Photonics: Materials through Applications III 2022 - Virtual, Online Duration: May 9 2022 → May 20 2022

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	12142
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Fiber Lasers and Glass Photonics: Materials through Applications III 2022
City	Virtual, Online
Period	5/9/22 → 5/20/22

Keywords

Ionizing radiation sensors
Optical fiber sensors
Radiation dosage
Radiation monitoring

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2624401

Cite this

Olivero, M., Bellone, A., Segura, M., Blanc, W., Mady, F., Benabdesselam, M., Tosi, D., & Perrone, G. (2022). Ionizing radiation profiling through the induced refractive index change in backscattering-enhanced optical fibers. In M. Ferrari, A. B. Seddon, S. Taccheo, & S. Taccheo (Eds.), Fiber Lasers and Glass Photonics: Materials through Applications III Article 121420W (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12142). SPIE. https://doi.org/10.1117/12.2624401

Ionizing radiation profiling through the induced refractive index change in backscattering-enhanced optical fibers. / Olivero, Massimo; Bellone, Aurora; Segura, Martha et al.
Fiber Lasers and Glass Photonics: Materials through Applications III. ed. / Maurizio Ferrari; Angela B. Seddon; Stefano Taccheo; Stefano Taccheo. SPIE, 2022. 121420W (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12142).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Olivero, M, Bellone, A, Segura, M, Blanc, W, Mady, F, Benabdesselam, M, Tosi, D & Perrone, G 2022, Ionizing radiation profiling through the induced refractive index change in backscattering-enhanced optical fibers. in M Ferrari, AB Seddon, S Taccheo & S Taccheo (eds), Fiber Lasers and Glass Photonics: Materials through Applications III., 121420W, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12142, SPIE, Fiber Lasers and Glass Photonics: Materials through Applications III 2022, Virtual, Online, 5/9/22. https://doi.org/10.1117/12.2624401

Olivero M, Bellone A, Segura M, Blanc W, Mady F, Benabdesselam M et al. Ionizing radiation profiling through the induced refractive index change in backscattering-enhanced optical fibers. In Ferrari M, Seddon AB, Taccheo S, Taccheo S, editors, Fiber Lasers and Glass Photonics: Materials through Applications III. SPIE. 2022. 121420W. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2624401

Olivero, Massimo ; Bellone, Aurora ; Segura, Martha et al. / Ionizing radiation profiling through the induced refractive index change in backscattering-enhanced optical fibers. Fiber Lasers and Glass Photonics: Materials through Applications III. editor / Maurizio Ferrari ; Angela B. Seddon ; Stefano Taccheo ; Stefano Taccheo. SPIE, 2022. (Proceedings of SPIE - The International Society for Optical Engineering).

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abstract = "Enhanced Rayleigh backscattering optical fibers, interrogated by an optical frequency domain reflectometer, are used to perform remote real-time measurements of X-ray irradiation profiles, with possible application as dosimeters in radiotherapy treatments. The enhanced Rayleigh backscattering is obtained by proper engineering of the composition of fiber core, either by introduction of Aluminum or Magnesium silicate nanoparticles as radiation-sensitive dopants. A detectable radiation-induced refractive index change can be spatially resolved through the measurement of the frequency shift of the Rayleigh backscattering along the fiber. It is experimentally demonstrated that two mechanisms of radiation-induced refractive index change take place. At doses nearly compatible with those delivered in radiotherapy, a negative refractive index is induced, whereas at high doses the change is positive. This behavior is also confirmed by the shift of Bragg wavelength of a fiber Bragg grating inscribed in the nanoparticles-doped fiber and used as a reference.",

keywords = "Ionizing radiation sensors, Optical fiber sensors, Radiation dosage, Radiation monitoring",

author = "Massimo Olivero and Aurora Bellone and Martha Segura and Wilfried Blanc and Franck Mady and Mourad Benabdesselam and Daniele Tosi and Guido Perrone",

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AU - Tosi, Daniele

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N2 - Enhanced Rayleigh backscattering optical fibers, interrogated by an optical frequency domain reflectometer, are used to perform remote real-time measurements of X-ray irradiation profiles, with possible application as dosimeters in radiotherapy treatments. The enhanced Rayleigh backscattering is obtained by proper engineering of the composition of fiber core, either by introduction of Aluminum or Magnesium silicate nanoparticles as radiation-sensitive dopants. A detectable radiation-induced refractive index change can be spatially resolved through the measurement of the frequency shift of the Rayleigh backscattering along the fiber. It is experimentally demonstrated that two mechanisms of radiation-induced refractive index change take place. At doses nearly compatible with those delivered in radiotherapy, a negative refractive index is induced, whereas at high doses the change is positive. This behavior is also confirmed by the shift of Bragg wavelength of a fiber Bragg grating inscribed in the nanoparticles-doped fiber and used as a reference.

AB - Enhanced Rayleigh backscattering optical fibers, interrogated by an optical frequency domain reflectometer, are used to perform remote real-time measurements of X-ray irradiation profiles, with possible application as dosimeters in radiotherapy treatments. The enhanced Rayleigh backscattering is obtained by proper engineering of the composition of fiber core, either by introduction of Aluminum or Magnesium silicate nanoparticles as radiation-sensitive dopants. A detectable radiation-induced refractive index change can be spatially resolved through the measurement of the frequency shift of the Rayleigh backscattering along the fiber. It is experimentally demonstrated that two mechanisms of radiation-induced refractive index change take place. At doses nearly compatible with those delivered in radiotherapy, a negative refractive index is induced, whereas at high doses the change is positive. This behavior is also confirmed by the shift of Bragg wavelength of a fiber Bragg grating inscribed in the nanoparticles-doped fiber and used as a reference.

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KW - Radiation dosage

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Ionizing radiation profiling through the induced refractive index change in backscattering-enhanced optical fibers

Abstract

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Conference

Keywords

ASJC Scopus subject areas

Access to Document

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