Heat transfer measurements with a four-core optical fiber

Sema Güvenç; Mehmet Naci Inci

doi:10.1117/12.2269121

16 May 2017 Heat transfer measurements with a four-core optical fiber

Sema Güvenç, Mehmet Naci Inci

Proceedings Volume 10231, Optical Sensors 2017; 102312S (2017) https://doi.org/10.1117/12.2269121
Event: SPIE Optics + Optoelectronics, 2017, Prague, Czech Republic

Abstract

A four-core optical fiber is used to investigate one-dimensional heat transfer measurements. Heat pulses from a Nd:YAG laser of 600 ms duration with a repetition rate of the order of 10 s are delivered onto one of the fiber cores. This results in an optical path length difference between the guiding cores due to the change in the refractive index and physical length of the targeted fiber core. As a result of this process, a phase shift of 1.30 rad is measured with a digital camera for 140 mW pulses in reflection scheme. The heat diffusion length in the selected fiber core is determined to be 2.8 mm, which contains 33.2 kJ/m2s heat, causing a temperature rise of 4.30 K.

Citation Download Citation

Sema Güvenç and Mehmet Naci Inci "Heat transfer measurements with a four-core optical fiber", Proc. SPIE 10231, Optical Sensors 2017, 102312S (16 May 2017); https://doi.org/10.1117/12.2269121

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