A demonstration of multiplex biosensing using whispering gallery mode microspheres positioned onto a microstructured optical fiber tip
Date
2014
Authors
Reynolds, T.
François, A.
Nicholls, S.
Monro, T.
Editors
Cote, C.
L, G.
L, G.
Advisors
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Conference paper
Citation
Optical Diagnostics and Sensing XIV: Toward Point-of-Care Diagnostics, 3 and 5–6 February 2014 San Francisco, California, United States / G. L. Coté (ed.): 895110
Statement of Responsibility
T. Reynolds, A. François, S.J. Nicholls, T.M. Monro
Conference Name
Optical Diagnostics and Sensing (14th : 2014 : San Francisco, CA., U.S.A.)
Abstract
Here, we show that multiplexed Whispering Gallery Modes sensing can be achieved using two dye-doped microspheres positioned onto the tip of a Microstructured Optical Fiber. By operating the dye-doped microspheres below their lasing threshold, the individual resonances of each sphere overlap and therefore cannot be distinguished. However, when excited above their lasing threshold results in a de-convoluted spectrum where the resonances belonging to the individual spheres can be determined, enabling the detection of a specific interaction in one resonator and using the second as a dynamic reference, or monitoring different specific interactions with both spheres.
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© 2014 SPIE