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Proceedings Paper

Whispering gallery resonators for optical sensing
Author(s): Ramgopal Madugani; Sho Kasumie; Yong Yang; Jonathan Ward; Fuchuan Lei; Síle Nic Chormaic
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Paper Abstract

In recent years, whispering gallery mode devices have extended their functionality across a number of research fields from photonics to sensing applications. Here, we will discuss environmental sensing applications, such as pressure, flow, and temperature using ultrahigh Q-factor microspheres fabricated from ultrathin optical fiber and microbubbles fabricated from pretapered glass capillary. We will discuss device fabrication and the different types of sensing that can be pursued using such systems. Finally, we will introduce the concept of using cavity ring-up spectroscopy to perform dispersive transient sensing, whereby a perturbation to the environment leads to a frequency mode shift, and dissipative transient sensing, which can lead to broadening of the mode, in a whispering gallery mode resonator.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103231B (23 April 2017); doi: 10.1117/12.2272457
Show Author Affiliations
Ramgopal Madugani, Okinawa Institute of Science and Technology Graduate Univ. (Japan)
Sho Kasumie, Okinawa Institute of Science and Technology Graduate Univ. (Japan)
Yong Yang, Okinawa Institute of Science and Technology Graduate Univ. (Japan)
Jonathan Ward, Okinawa Institute of Science and Technology Graduate Univ. (Japan)
Fuchuan Lei, Okinawa Institute of Science and Technology Graduate Univ. (Japan)
Síle Nic Chormaic, Okinawa Institute of Science and Technology Graduate Univ. (Japan)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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