title: Phone-sized whispering-gallery microresonator sensing system.
abstract: We develop a compact whispering-gallery-mode (WGM) sensing system by integrating multiple components, including a tunable laser, a temperature controller, a function generator, an oscilloscope, a photodiode detector, and a testing computer, into a phone-sized embedded system. We demonstrate a thermal sensing experiment by using this portable system. Such a system successfully eliminates bulky measurement equipment required for characterizing optical resonators and will open up new avenues for practical sensing applications by using ultra-high Q WGM resonators.
authors.forename: Xiangyi
authors.initials: X
authors.lastname: Xu
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Jiang
authors.forename: Guangming
authors.initials: G
authors.lastname: Zhao
authors.forename: Lan
authors.initials: L
authors.lastname: Yang