Share Email Print
cover

Proceedings Paper

Sensor platform based on packaged whispering-gallery-resonators
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Monitoring and controlling processes in industry, healthcare and environment encourage the demand and development of ultrasensitive sensors to detect physical and chemical analytes with very low concentrations. Optical methods based on resonant microstructures, that present high sensitivity, precision, selectivity, sensor lifetime and unit cost, are one of the most promising detection techniques. A fundamental limitation of optical microresonators is the realization of a reliable packaging approach that includes their readout element, e.g., tapered fibers. In this paper, the sensing response of packaged glass bottle microresonators have been demonstrated. Bottle-shaped structures support optical modes called whispering gallery modes along their curvature profile having a quality factor of 2.6 106 at 1550 nm in air. Two simple and robust packages fabricated by 3D printing and glass structuring methods were proposed for temperature and refractive index experiments. A temperature sensitivity of 9.9 pm/K in the range from 17.1°C to 22.5°C was obtained with a taper-coupled bottle system assembled into a plastic package. A similar value has been found when a bottle structure was mounted on a thermally-stable glass base and subjected to temperature changes from 18.6°C to 26.3°C. Both values were theoretically corroborated. For refractive index measurements, the fiber taper has been partially encapsulated employing a low refractive index glue. This provides a free-vibration package solution. Preliminary results shows a refractive index sensitivity of 13 nm/RIU under a constant temperature of 22°C. The proposed fiber-coupled bottle package enables new possibilities for the development of practical sensors.

Paper Details

Date Published: 21 February 2020
PDF: 9 pages
Proc. SPIE 11258, Frontiers in Biological Detection: From Nanosensors to Systems XII, 112580B (21 February 2020); doi: 10.1117/12.2545923
Show Author Affiliations
Vanessa Zamora, Fraunhofer-Institut für Zuverlässigkeit und Mikrointegration IZM (Germany)
Technische Univ. Berlin (Germany)
Jonas Herter, Fraunhofer-Institut für Zuverlässigkeit und Mikrointegration IZM (Germany)
Valentin Wunderlich, Technische Univ. Berlin (Germany)
Tiet Nguyen, Fraunhofer-Institut für Zuverlässigkeit und Mikrointegration IZM (Germany)
Henning Schröder, Fraunhofer-Institut für Zuverlässigkeit und Mikrointegration IZM (Germany)
Martin Schneider-Ramelow, Fraunhofer-Institut für Zuverlässigkeit und Mikrointegration IZM (Germany)


Published in SPIE Proceedings Vol. 11258:
Frontiers in Biological Detection: From Nanosensors to Systems XII
Amos Danielli; Benjamin L. Miller; Sharon M. Weiss, Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray