Hydrogel-Integrated FBG Sensors for Real-Time pH Monitoring

Doua Jamal Kosaji; Nazmi Basim Nazmi Alsaafeen; Mohammad Awad; Kinda Khalaf; Anna Maria Pappa; Maria De Fatima Fonseca Domingues

doi:10.1117/12.3062989

Hydrogel-Integrated FBG Sensors for Real-Time pH Monitoring

Doua Jamal Kosaji
, Nazmi Basim Nazmi Alsaafeen
, Mohammad Awad
, Kinda Khalaf
, Anna Maria Pappa
, Maria De Fatima Fonseca Domingues

Biomedical Engineering & Biotechnology

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

Abstract

The growing need for precise monitoring of critical parameters like pH has driven significant advancements in sensing technologies. FBG sensors, known for their high precision and adaptability, have emerged as a transformative tool for real-time measurements. This study explores the integration of an FBG sensor with a pH-responsive hydrogel to develop a system capable of accurate, real-time pH monitoring. The hydrogel exhibited measurable responses to pH variations, effectively translating these changes into wavelength shifts detected by the FBG sensor. Testing was conducted across a pH range of 3 to 7, with notable sensitivity in acidic conditions. This innovative system demonstrated high sensitivity of 4.1±0.7pm/unit pH, emphasizing its potential for diverse applications such as healthcare, environmental monitoring, and industrial processes.

Original language	British English
Title of host publication	29th International Conference on Optical Fiber Sensors
Editors	Jose Luis Santos, Manuel Lopez-Amo Sainz, Tong Sun
Publisher	SPIE
ISBN (Electronic)	9781510691872
DOIs	https://doi.org/10.1117/12.3062989
State	Published - 2025
Event	29th International Conference on Optical Fiber Sensors - Porto, Portugal Duration: 25 May 2025 → 30 May 2025

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	13639
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	29th International Conference on Optical Fiber Sensors
Country/Territory	Portugal
City	Porto
Period	25/05/25 → 30/05/25

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Keywords

Fiber Bragg Grating
hydrogels
Optical fiber sensors
pH levels

Access to Document

10.1117/12.3062989

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Kosaji, D. J., Alsaafeen, N. B. N., Awad, M., Khalaf, K., Pappa, A. M., & Fonseca Domingues, M. D. F. (2025). Hydrogel-Integrated FBG Sensors for Real-Time pH Monitoring. In J. L. Santos, M. L.-A. Sainz, & T. Sun (Eds.), 29th International Conference on Optical Fiber Sensors Article 13639AW (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 13639). SPIE. https://doi.org/10.1117/12.3062989

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title = "Hydrogel-Integrated FBG Sensors for Real-Time pH Monitoring",

abstract = "The growing need for precise monitoring of critical parameters like pH has driven significant advancements in sensing technologies. FBG sensors, known for their high precision and adaptability, have emerged as a transformative tool for real-time measurements. This study explores the integration of an FBG sensor with a pH-responsive hydrogel to develop a system capable of accurate, real-time pH monitoring. The hydrogel exhibited measurable responses to pH variations, effectively translating these changes into wavelength shifts detected by the FBG sensor. Testing was conducted across a pH range of 3 to 7, with notable sensitivity in acidic conditions. This innovative system demonstrated high sensitivity of 4.1±0.7pm/unit pH, emphasizing its potential for diverse applications such as healthcare, environmental monitoring, and industrial processes.",

keywords = "Fiber Bragg Grating, hydrogels, Optical fiber sensors, pH levels",

author = "Kosaji, \{Doua Jamal\} and Alsaafeen, \{Nazmi Basim Nazmi\} and Mohammad Awad and Kinda Khalaf and Pappa, \{Anna Maria\} and \{Fonseca Domingues\}, \{Maria De Fatima\}",

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year = "2025",

doi = "10.1117/12.3062989",

language = "British English",

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

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editor = "Santos, \{Jose Luis\} and Sainz, \{Manuel Lopez-Amo\} and Tong Sun",

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Kosaji, DJ, Alsaafeen, NBN, Awad, M , Khalaf, K , Pappa, AM & Fonseca Domingues, MDF 2025, Hydrogel-Integrated FBG Sensors for Real-Time pH Monitoring. in JL Santos, ML-A Sainz & T Sun (eds), 29th International Conference on Optical Fiber Sensors., 13639AW, Proceedings of SPIE - The International Society for Optical Engineering, vol. 13639, SPIE, 29th International Conference on Optical Fiber Sensors, Porto, Portugal, 25/05/25. https://doi.org/10.1117/12.3062989

Hydrogel-Integrated FBG Sensors for Real-Time pH Monitoring. / Kosaji, Doua Jamal; Alsaafeen, Nazmi Basim Nazmi; Awad, Mohammad et al.
29th International Conference on Optical Fiber Sensors. ed. / Jose Luis Santos; Manuel Lopez-Amo Sainz; Tong Sun. SPIE, 2025. 13639AW (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 13639).

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

TY - GEN

T1 - Hydrogel-Integrated FBG Sensors for Real-Time pH Monitoring

AU - Kosaji, Doua Jamal

AU - Alsaafeen, Nazmi Basim Nazmi

AU - Awad, Mohammad

AU - Khalaf, Kinda

AU - Pappa, Anna Maria

AU - Fonseca Domingues, Maria De Fatima

PY - 2025

Y1 - 2025

N2 - The growing need for precise monitoring of critical parameters like pH has driven significant advancements in sensing technologies. FBG sensors, known for their high precision and adaptability, have emerged as a transformative tool for real-time measurements. This study explores the integration of an FBG sensor with a pH-responsive hydrogel to develop a system capable of accurate, real-time pH monitoring. The hydrogel exhibited measurable responses to pH variations, effectively translating these changes into wavelength shifts detected by the FBG sensor. Testing was conducted across a pH range of 3 to 7, with notable sensitivity in acidic conditions. This innovative system demonstrated high sensitivity of 4.1±0.7pm/unit pH, emphasizing its potential for diverse applications such as healthcare, environmental monitoring, and industrial processes.

AB - The growing need for precise monitoring of critical parameters like pH has driven significant advancements in sensing technologies. FBG sensors, known for their high precision and adaptability, have emerged as a transformative tool for real-time measurements. This study explores the integration of an FBG sensor with a pH-responsive hydrogel to develop a system capable of accurate, real-time pH monitoring. The hydrogel exhibited measurable responses to pH variations, effectively translating these changes into wavelength shifts detected by the FBG sensor. Testing was conducted across a pH range of 3 to 7, with notable sensitivity in acidic conditions. This innovative system demonstrated high sensitivity of 4.1±0.7pm/unit pH, emphasizing its potential for diverse applications such as healthcare, environmental monitoring, and industrial processes.

KW - Fiber Bragg Grating

KW - hydrogels

KW - Optical fiber sensors

KW - pH levels

UR - https://www.scopus.com/pages/publications/105007949888

U2 - 10.1117/12.3062989

DO - 10.1117/12.3062989

M3 - Conference contribution

AN - SCOPUS:105007949888

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - 29th International Conference on Optical Fiber Sensors

A2 - Santos, Jose Luis

A2 - Sainz, Manuel Lopez-Amo

A2 - Sun, Tong

PB - SPIE

T2 - 29th International Conference on Optical Fiber Sensors

Y2 - 25 May 2025 through 30 May 2025

ER -

Hydrogel-Integrated FBG Sensors for Real-Time pH Monitoring

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

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