Thermo-optic tuning of whispering gallery mode lasing from a dye-doped hollow polymer optical fiber

Abstract

We report temperature-induced tuning of whispering gallery mode (WGM) laser emission from a Rhodamine-B-doped polymethylmethacrylate hollow optical fiber. Lasing studies on dye-doped hollow fibers with different radii were carried out with optical pumping using a Q-switched Nd:YAG laser. The observed lasing modes were confirmed as WGM emission with a high quality factor of 7.58×10. The diameter-dependent variation in lasing spectra of these hollow fibers was investigated. A tuning range of 0.44 nm with a sensitivity of 0.011 nm/°C was obtained for the lasing modes by varying the temperature from 25°C to 60°C from a dye-doped polymethylmethacrylate hollow fiber of diameter 305 μm.

Flying particle microlaser and temperature sensor in hollow-core photonic crystal fiber

“…The lasing spectra at three different temperatures show a clear blue-shift in the emission wavelength ( Fig. 5(a)), caused by the negative thermo-optic coefficient of the WGMs, which dominates the temperature response [4]. Fig.…”

Polymer Optical Fibre Temperature Sensors - A Review

“…The temperature sensitivity of the BSBS fibre structure was significantly improved to over 2465 pm°C −1 . A resolution of 0.008°C over the temperature range of 20.7-31.7°C was recorded for the proposed device, which was the best resolution compared with the ones reported in literatures [29][30][31][32][33][34]. The BSBS fibre structure is highly suitable for accurate temperature measurement founded on its high sensitivity, excellent repeatability, ultra-low-cost, and straightforward fabrication process.…”

Tuning of Polarization-Dependent Whispering Gallery Modes in Grapefruit Microstructured Optical Fibers Infiltrated With Negative Dielectric Anisotropy Liquid Crystals

“…Tuning of WGMs in microresonators have been an interesting research topic since the pioneering studies on WGM devices in the 1990s. As reported in previous studies, tunable WGM microresonators could be achieved by altering microresonator size [11,12], controlling environmental temperature [13,14], changing solution concentration or simply replacing one fluid infiltrated in the microresonator with another [4]. Although large WGM resonance wavelength shift could be achieved, it would be difficult to precisely control the microresonator size and environmental temperature.…”