Temperature sensor based on high-Q polymethylmethacrylate optical microbubble

Temperature sensor based on high-Q polymethylmethacrylate optical microbubble

A new flexible method to fabricate a temperature sensor based on polymethylmethacrylate (PMMA) optical microbubbles, using a volume-controllable pipette, is demonstrated. The high quality factor of the cavity is guaranteed by the smooth wall of the microbubble. The shape and refractive index of the...

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Veröffentlicht in:Laser physics 2018-07, Vol.28 (7), p.76202
Hauptverfasser: He, Chunhong, Sun, Huijin, Mo, Jun, Yang, Chao, Feng, Guoying, Zhou, Hao, Zhou, Shouhuan
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Sprache:eng
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polymethylmethacrylate (PMMA) microbubbles
sensor
temperature
whispering gallery mode (WGM)
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container_end_page
container_issue 7
container_start_page 76202
container_title Laser physics
container_volume 28
creator He, Chunhong
Sun, Huijin
Mo, Jun
Yang, Chao
Feng, Guoying
Zhou, Hao
Zhou, Shouhuan
description A new flexible method to fabricate a temperature sensor based on polymethylmethacrylate (PMMA) optical microbubbles, using a volume-controllable pipette, is demonstrated. The high quality factor of the cavity is guaranteed by the smooth wall of the microbubble. The shape and refractive index of the microbubbles change with the surrounding temperature, which leads to the obvious displacement of the whispering gallery mode transmission spectrum. As the surrounding temperature increases, the spectrum undergoes a significant blue shift, hence the microresonator can be used for temperature sensing. A sensitivity of 39 pm °C−1 is obtained in a PMMA microbubble with a diameter of 740 µm. This work suggests a new convenient approach to achieving high-quality flexible microscale sensors.
doi_str_mv 10.1088/1555-6611/aab452
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subjects polymethylmethacrylate (PMMA) microbubbles
sensor
temperature
whispering gallery mode (WGM)
title Temperature sensor based on high-Q polymethylmethacrylate optical microbubble
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