Ultrafast fiber Bragg grating inscription in DPDS-core doped POF using 325 nm laser

Julien Bonefacino; Tom S. Glen; Xin Cheng; Steven T. Boles; Hwa Yaw Tam

doi:10.1117/12.2520580

Ultrafast fiber Bragg grating inscription in DPDS-core doped POF using 325 nm laser

Julien Bonefacino, Tom S. Glen, Xin Cheng, Steven T. Boles, Hwa Yaw Tam

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

1 Citation (Scopus)

Abstract

A novel core dopant called diphenyl disulphide is used in PMMA-based fibers, permitting both increase of the refractive index of the fiber, together with good photosensitivity. FBGs can be inscribed in these single mode fibers within 7 ms using 325 nm laser and exhibit significant growth post-UV irradiation. In the present work, we investigate the grating growth behavior upon long UV irradiation time. Furthermore, we demonstrate the fabrication of fiber Bragg gratings with irradiation time ranging from 7 ms up to 10 s using a 325 nm laser and we investigate their growth post UV irradiation over 7 months. It is demonstrated that all the FBGs exhibit over 10 dB growth within the several month post-UV irradiation period. Raman spectroscopy measurements were carried out for several months on thin films post-UV irradiation, and significant changes in the molecular bounds of both diphenyl disulphide and PMMA are recorded, establishing the UV induced photo-chemical reaction responsible for the FBG growth. Finally, the reliability of the novel core dopant and the potential use of the fiber for in-vivo sensing was investigated by using humidity cycling at temperatures near the human body core temperature.

Original language	English
Title of host publication	Micro-Structured and Specialty Optical Fibres VI
Editors	Kyriacos Kalli, Alexis Mendez, Pavel Peterka
Publisher	SPIE
ISBN (Electronic)	9781510627246
DOIs	https://doi.org/10.1117/12.2520580
Publication status	Published - 2019
Event	Micro-Structured and Specialty Optical Fibres VI 2019 - Prague, Czech Republic Duration: 3 Apr 2019 → 4 Apr 2019

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11029
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Micro-Structured and Specialty Optical Fibres VI 2019
Country/Territory	Czech Republic
City	Prague
Period	3/04/19 → 4/04/19

Keywords

Fiber Bragg grating
Photosensitive material
Polymer optical fiber
Sensing
Spectroscopy

ASJC Scopus subject areas

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

More information

10.1117/12.2520580

Cite this

Bonefacino, J., Glen, T. S., Cheng, X., Boles, S. T., & Tam, H. Y. (2019). Ultrafast fiber Bragg grating inscription in DPDS-core doped POF using 325 nm laser. In K. Kalli, A. Mendez, & P. Peterka (Eds.), Micro-Structured and Specialty Optical Fibres VI Article 110290C (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11029). SPIE. https://doi.org/10.1117/12.2520580

@inproceedings{31fb7ee601ae46cabc91914c287f8984,

title = "Ultrafast fiber Bragg grating inscription in DPDS-core doped POF using 325 nm laser",

abstract = "A novel core dopant called diphenyl disulphide is used in PMMA-based fibers, permitting both increase of the refractive index of the fiber, together with good photosensitivity. FBGs can be inscribed in these single mode fibers within 7 ms using 325 nm laser and exhibit significant growth post-UV irradiation. In the present work, we investigate the grating growth behavior upon long UV irradiation time. Furthermore, we demonstrate the fabrication of fiber Bragg gratings with irradiation time ranging from 7 ms up to 10 s using a 325 nm laser and we investigate their growth post UV irradiation over 7 months. It is demonstrated that all the FBGs exhibit over 10 dB growth within the several month post-UV irradiation period. Raman spectroscopy measurements were carried out for several months on thin films post-UV irradiation, and significant changes in the molecular bounds of both diphenyl disulphide and PMMA are recorded, establishing the UV induced photo-chemical reaction responsible for the FBG growth. Finally, the reliability of the novel core dopant and the potential use of the fiber for in-vivo sensing was investigated by using humidity cycling at temperatures near the human body core temperature.",

keywords = "Fiber Bragg grating, Photosensitive material, Polymer optical fiber, Sensing, Spectroscopy",

author = "Julien Bonefacino and Glen, {Tom S.} and Xin Cheng and Boles, {Steven T.} and Tam, {Hwa Yaw}",

note = "Publisher Copyright: {\textcopyright} 2019 SPIE.; Micro-Structured and Specialty Optical Fibres VI 2019 ; Conference date: 03-04-2019 Through 04-04-2019",

year = "2019",

doi = "10.1117/12.2520580",

language = "English",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

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Bonefacino, J, Glen, TS, Cheng, X, Boles, ST & Tam, HY 2019, Ultrafast fiber Bragg grating inscription in DPDS-core doped POF using 325 nm laser. in K Kalli, A Mendez & P Peterka (eds), Micro-Structured and Specialty Optical Fibres VI., 110290C, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11029, SPIE, Micro-Structured and Specialty Optical Fibres VI 2019, Prague, Czech Republic, 3/04/19. https://doi.org/10.1117/12.2520580

Ultrafast fiber Bragg grating inscription in DPDS-core doped POF using 325 nm laser. / Bonefacino, Julien; Glen, Tom S.; Cheng, Xin et al.
Micro-Structured and Specialty Optical Fibres VI. ed. / Kyriacos Kalli; Alexis Mendez; Pavel Peterka. SPIE, 2019. 110290C (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11029).

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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AU - Bonefacino, Julien

AU - Glen, Tom S.

AU - Cheng, Xin

AU - Boles, Steven T.

AU - Tam, Hwa Yaw

PY - 2019

Y1 - 2019

N2 - A novel core dopant called diphenyl disulphide is used in PMMA-based fibers, permitting both increase of the refractive index of the fiber, together with good photosensitivity. FBGs can be inscribed in these single mode fibers within 7 ms using 325 nm laser and exhibit significant growth post-UV irradiation. In the present work, we investigate the grating growth behavior upon long UV irradiation time. Furthermore, we demonstrate the fabrication of fiber Bragg gratings with irradiation time ranging from 7 ms up to 10 s using a 325 nm laser and we investigate their growth post UV irradiation over 7 months. It is demonstrated that all the FBGs exhibit over 10 dB growth within the several month post-UV irradiation period. Raman spectroscopy measurements were carried out for several months on thin films post-UV irradiation, and significant changes in the molecular bounds of both diphenyl disulphide and PMMA are recorded, establishing the UV induced photo-chemical reaction responsible for the FBG growth. Finally, the reliability of the novel core dopant and the potential use of the fiber for in-vivo sensing was investigated by using humidity cycling at temperatures near the human body core temperature.

AB - A novel core dopant called diphenyl disulphide is used in PMMA-based fibers, permitting both increase of the refractive index of the fiber, together with good photosensitivity. FBGs can be inscribed in these single mode fibers within 7 ms using 325 nm laser and exhibit significant growth post-UV irradiation. In the present work, we investigate the grating growth behavior upon long UV irradiation time. Furthermore, we demonstrate the fabrication of fiber Bragg gratings with irradiation time ranging from 7 ms up to 10 s using a 325 nm laser and we investigate their growth post UV irradiation over 7 months. It is demonstrated that all the FBGs exhibit over 10 dB growth within the several month post-UV irradiation period. Raman spectroscopy measurements were carried out for several months on thin films post-UV irradiation, and significant changes in the molecular bounds of both diphenyl disulphide and PMMA are recorded, establishing the UV induced photo-chemical reaction responsible for the FBG growth. Finally, the reliability of the novel core dopant and the potential use of the fiber for in-vivo sensing was investigated by using humidity cycling at temperatures near the human body core temperature.

KW - Fiber Bragg grating

KW - Photosensitive material

KW - Polymer optical fiber

KW - Sensing

KW - Spectroscopy

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BT - Micro-Structured and Specialty Optical Fibres VI

A2 - Kalli, Kyriacos

A2 - Mendez, Alexis

A2 - Peterka, Pavel

PB - SPIE

T2 - Micro-Structured and Specialty Optical Fibres VI 2019

Y2 - 3 April 2019 through 4 April 2019

ER -

Ultrafast fiber Bragg grating inscription in DPDS-core doped POF using 325 nm laser

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