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Hot-wire anemometer based on fiber Bragg grating coated with carbon conductive paint

MUHAMMAD RIDZWAN SHAHRIL1,2, MUHAMMAD KHUDHORI MOHD YUSOF1,2, SITI NURUL FATIHAH AZAHAN1,2, SABRINA MOHD FARID1,2, LIM KOK SING3, HARITH AHMAD3, MOHD ZAMANI ZULKIFLI1,2,*

Affiliation

  1. IIUM Photonics and Quantum Centre, Kulliyyah of Science, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia
  2. Physics Department, Kulliyyah of Science, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia
  3. Photonics Research Centre, University of Malaya, Lembah Pantai, 50603 Kuala Lumpur, Malaysia

Abstract

Hot-wire anemometers are sensors used to measure wind speed via the principle of thermal equilibrium. They are attributed to the issue of probe contamination, requiring regular maintenance, causing inaccurate measurements. A hot-wire anemometer based on FBG coated with carbon conductive paint is proposed. 2 mm coating is applied on the FBG grating region using brushing method. The sensitivity of the proposed anemometer is 0.0410 nm / (m/s) in the temperature range of 60 °C to 150 °C, at wind speeds of 0 m/s, 4.55 m/s , 4.86 m/s and 5.02 m/s. The FBG is proven to possess increased sensitivity towards temperature, improving its thermal anemometry capabilities.

Keywords

Fiber Bragg grating, Carbon conductive paint, Hot wire anemometer, Wind sensor, Optical sensor.

Citation

MUHAMMAD RIDZWAN SHAHRIL, MUHAMMAD KHUDHORI MOHD YUSOF, SITI NURUL FATIHAH AZAHAN, SABRINA MOHD FARID, LIM KOK SING, HARITH AHMAD, MOHD ZAMANI ZULKIFLI, Hot-wire anemometer based on fiber Bragg grating coated with carbon conductive paint, Optoelectronics and Advanced Materials - Rapid Communications, 19, 5-6, May-June 2025, pp.227-234 (2025).

Submitted at: Nov. 22, 2024

Accepted at: June 3, 2025