Development of a fluorescent-based miniaturized fiber optic pH sensor

Bohong Zhang; Farhan Mumtaz; Muhammad Roman; Dinesh Alla; Rex E. Gerald; Jie Huang

doi:10.1117/12.2663886

15 June 2023 Development of a fluorescent-based miniaturized fiber optic pH sensor

Bohong Zhang, Farhan Mumtaz, Muhammad Roman, Dinesh Alla, Rex E. Gerald, Jie Huang

Proceedings Volume 12532, Optical Waveguide and Laser Sensors II; 125320X (2023) https://doi.org/10.1117/12.2663886
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Conference Poster

Abstract

This study presents an assembly-free ball lens structure at the tip of tapered multimode optical fiber to enhance the light collection efficiency for pH measurements. A 35 µm diameter ball lens was fabricated at the sensor tip. In addition, a thin layer of fluorescence dye was mixed with sol-gel that formed at the fiber tip for pH sensing. The simulation result demonstrates the light propagation on the ball lens tip. The experiment results reveal that the proposed sensor has a rapid response time (< 3 seconds), high sensitivity, and pinpoint accuracy (±1.0%) in the pH range of 6.0-8.0.

Citation Download Citation

Bohong Zhang, Farhan Mumtaz, Muhammad Roman, Dinesh Alla, Rex E. Gerald, and Jie Huang "Development of a fluorescent-based miniaturized fiber optic pH sensor", Proc. SPIE 12532, Optical Waveguide and Laser Sensors II, 125320X (15 June 2023); https://doi.org/10.1117/12.2663886

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available