Mode-splitting for refractive index sensing in fluorescent whispering gallery mode resonators with broken symmetry

2018 ◽  
Author(s):  
Yvonne Qiongyue Kang ◽  
Nicolas Riesen ◽  
Alexandre François ◽  
Tanya M. Monro
Keyword(s):  
Refractive Index ◽  
Whispering Gallery Mode ◽  
Broken Symmetry ◽  
Whispering Gallery ◽  
Refractive Index Sensing ◽  
Mode Splitting

Whispering gallery mode splitting on filling-based microresonators for refractive index sensing

2021 ◽  
pp. 127193
Author(s):  
Hanyang Li ◽  
Haoran Zhang ◽  
Jiapeng Sun ◽  
Miao Yu ◽  
Zhonghua Zhang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Refractive Index Sensing ◽  
Mode Splitting

Whispering gallery mode microlasers and refractive index sensing based on single polymer fiber

2013 ◽  
Vol 7 (1) ◽  
pp. 133-139 ◽  
Author(s):  
Van Duong Ta ◽  
Rui Chen ◽  
Lin Ma ◽  
Yong Jun Ying ◽  
Han Dong Sun
Keyword(s):  
Refractive Index ◽  
Whispering Gallery Mode ◽  
Polymer Fiber ◽  
Whispering Gallery ◽  
Refractive Index Sensing

scholarly journals Mode-Splitting for Refractive Index Sensing in Fluorescent Whispering Gallery Mode Microspheres with Broken Symmetry

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2987 ◽  
Author(s):  
Yvonne Kang ◽  
Alexandre François ◽  
Nicolas Riesen ◽  
Tanya Monro
Keyword(s):  
Refractive Index ◽  
Whispering Gallery Mode ◽  
High Refractive Index ◽  
Refractive Index Sensitivity ◽  
Whispering Gallery ◽  
Mode Splitting ◽  
Surrounding Environment ◽  
Novel Approach ◽  
Surrounding Refractive Index ◽  
Index Sensitivity

Whispering gallery mode (WGM) resonators have become increasingly diverse in terms of both architecture and applications, especially as refractometric sensors, allowing for unprecedented levels of sensitivity. However, like every refractometric sensor, a single WGM resonator cannot distinguish temperature variations from changes in the refractive index of the surrounding environment. Here, we investigate how breaking the symmetry of an otherwise perfect fluorescent microsphere, by covering half of the resonator with a high-refractive-index (RI) glue, might enable discrimination of changes in temperature from variations in the surrounding refractive index. This novel approach takes advantage of the difference of optical pathway experienced by WGMs circulating in different equatorial planes of a single microsphere resonator, which induces mode-splitting. We investigated the influence of the surrounding RI of the microsphere on mode-splitting through an evaluation of the sphere’s WGM spectrum and quality factor (Q-factor). Our results reveal that the magnitude of the mode-splitting increases as the refractive index contrast between the high-refractive-index (RI) glue and the surrounding environment increases, and that when they are equal no mode-splitting can be seen. Investigating the refractive index sensitivity of the individual sub modes resulting from the mode-splitting unveils a new methodology for RI sensing, and enables discrimination between surrounding refractive index changes and temperature changes, although it comes at the cost of an overall reduced refractive index sensitivity.

Optofluidic whispering gallery mode microcapillary lasers for refractive index sensing

2016 ◽  
Author(s):  
Alexandre François ◽  
Nicolas Riesen ◽  
Kristy Gardner ◽  
Tanya M. Monro ◽  
Al Meldrum
Keyword(s):  
Refractive Index ◽  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Refractive Index Sensing

Optical detection of nanoparticles by mode splitting in whispering-gallery-mode microcavities

2010 ◽  
Author(s):  
Jiangang Zhu ◽  
Sahin Kaya Ozdemir ◽  
Lina He ◽  
Da-Ren Chen ◽  
Lan Yang
Keyword(s):  
Optical Detection ◽  
Whispering Gallery Mode ◽  
Whispering Gallery ◽  
Mode Splitting
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