| LIANG Cong-zhou,ZHANG Hao,WANG Yu-jia,WU Ji-xuan,LIN Wei,LIU Bo,LIU Hai-feng.Laser-tuned whispering gallery modes in silica microbubble resonator integrated with iron oxide particles[J].Optoelectronics Letters,2021,17(3):129-133 |
| Laser-tuned whispering gallery modes in silica microbubble resonator integrated with iron oxide particles |
| Author Name | Affiliation | | LIANG Cong-zhou | Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China | | ZHANG Hao | Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China | | WANG Yu-jia | Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China | | WU Ji-xuan | Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, College of Electronic and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China | | LIN Wei | Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China | | LIU Bo | Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China | | LIU Hai-feng | Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China |
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| Abstract: |
| A 473-nm-laser-tuned whispering gallery mode (WGM) silica microbubble resonator integrated with iron oxide particles is demonstrated in this paper. Owing to the photo-induced thermal effect, the WGM resonance wavelength could be tuned by adjusting laser power density of the illuminating light absorbed by the iron oxide particles. A wavelength tuning sensitivity of 0.03 nm/(mW.mm-2) and a tuning range of 0.18 nm are experimentally achieved. Moreover, the influence of ambient temperature on the WGM spectral characteristics is experimentally studied, and a silica-microbubble-based reference scheme is demonstrated to compensate for the temperature-caused resonance wavelength variation. The proposed laser-tuned microresonator has great potential in optical modulation and high-precision optical filtering applications. |
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