Fano resonance and improved sensing performance in a spectral-simplified optofluidic micro-bubble resonator by introducing selective modal losses.

The spectral mode density in optical micro-bubble resonators is reduced by introducing a loss element of UV curable adhesive to selectively suppress the whispering gallery modal resonances. Asymmetric Fano resonant profile appears after spectral simplification, and the sharp slope amplifies the detecting intensity change by 4.3 times when sensing the liquid core refractive index change.

[1]  E. R. Thoen,et al.  Ultra-compact Si-SiO2 microring resonator optical channel dropping filters , 1998, IEEE Photonics Technology Letters.

[2]  D. Meschede,et al.  Tunable whispering-gallery-mode resonators for cavity quantum electrodynamics , 2005 .

[3]  Dieter Braun,et al.  Protein detection by optical shift of a resonant microcavity , 2002 .

[4]  Lei Xu,et al.  Mode-selective lasing in high-Q polymer micro bottle resonators. , 2015, Optics express.

[5]  Michalis N. Zervas,et al.  Microtaper fiber excitation effects in bottle microresonators , 2013, Photonics West - Lasers and Applications in Science and Engineering.

[6]  G. S. Murugan,et al.  Whispering gallery mode spectra of channel waveguide coupled microspheres. , 2008, Optics express.

[7]  Ingo Breunig,et al.  Second-harmonic generation of light at 245 nm in a lithium tetraborate whispering gallery resonator. , 2015, Optics letters.

[8]  Yuri S. Kivshar,et al.  Fano Resonances in Nanoscale Structures , 2010 .

[9]  M. N. Petrovich,et al.  Hollow-bottle optical microresonators , 2011, CLEO: 2011 - Laser Science to Photonic Applications.

[10]  Lan Yang,et al.  Electromagnetically induced transparency-like effect in a single polydimethylsiloxane-coated silica microtoroid , 2009 .

[11]  Kouki Totsuka,et al.  Slow light in coupled-resonator-induced transparency. , 2007, Physical review letters.

[12]  Lan Yang,et al.  Coupled optical microcavities: an enhanced refractometric sensing configuration. , 2008, Optics express.

[13]  Rajan P Kulkarni,et al.  Label-Free, Single-Molecule Detection with Optical Microcavities , 2007, Science.

[14]  F. Warken,et al.  Ultra-high-Q tunable whispering-gallery-mode microresonator , 2009, CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference.

[15]  Michalis N. Zervas,et al.  Whispering gallery mode selection in optical bottle microresonators , 2012 .

[16]  G. Solomon,et al.  Active control of emission directionality of semiconductor microdisk lasers , 2014, 1404.6709.

[17]  Joachim Knittel,et al.  Detection of nanoparticles with a frequency locked whispering gallery mode microresonator , 2013, 1303.1174.

[18]  James S Wilkinson,et al.  Optical excitation and probing of whispering gallery modes in bottle microresonators: potential for all-fiber add-drop filters. , 2010, Optics letters.

[19]  Vladimir S. Ilchenko,et al.  Mode filtering in optical whispering gallery resonators , 2005 .

[20]  Chung-Yen Chao,et al.  Biochemical sensors based on polymer microrings with sharp asymmetrical resonance , 2003 .

[21]  Jonathan Ward,et al.  Coupled-mode-induced transparency in aerostatically tuned microbubble whispering-gallery resonators. , 2015, Optics letters.

[22]  S. I. Shopova,et al.  Induced transparency and absorption in coupled whispering-gallery microresonators , 2005 .

[23]  M. Oxborrow.  Traceable 2-D Finite-Element Simulation of the Whispering-Gallery Modes of Axisymmetric Electromagnetic Resonators , 2006, IEEE Transactions on Microwave Theory and Techniques.

[24]  James S Wilkinson,et al.  Selective excitation of whispering gallery modes in a novel bottle microresonator. , 2009, Optics express.

[25]  Xudong Fan,et al.  Characterization of sensing capability of optofluidic ring resonator biosensors , 2010 .

[26]  J. Joannopoulos,et al.  Temporal coupled-mode theory for the Fano resonance in optical resonators. , 2003, Journal of the Optical Society of America. A, Optics, image science, and vision.

[27]  K. Vahala.  Optical microcavities : Photonic technologies , 2003 .

[28]  Xiang Wu,et al.  Self-referencing optofluidic ring resonator sensor for highly sensitive biomolecular detection. , 2013, Analytical chemistry.