scholarly journals Long Period Grating-Based Fiber Coupling to WGM Microresonators

Micromachines ◽  
2018 ◽  
Vol 9 (7) ◽  
pp. 366 ◽  
Author(s):  
Francesco Chiavaioli ◽  
Dario Laneve ◽  
Daniele Farnesi ◽  
Mario Falconi ◽  
Gualtiero Nunzi Conti ◽  
...  
Keyword(s):  
Whispering Gallery Modes ◽  
Long Period Grating ◽  
High Q ◽  
Optical Microresonators ◽  
Whispering Gallery ◽  
Long Period ◽  
Thick Fiber ◽  
Long Period Gratings ◽  
Fiber Taper ◽  
Good Agreement

A comprehensive model for designing robust all-in-fiber microresonator-based optical sensing setups is illustrated. The investigated all-in-fiber setups allow light to selectively excite high-Q whispering gallery modes (WGMs) into optical microresonators, thanks to a pair of identical long period gratings (LPGs) written in the same optical fiber. Microspheres and microbubbles are used as microresonators and evanescently side-coupled to a thick fiber taper, with a waist diameter of about 18 µm, in between the two LPGs. The model is validated by comparing the simulated results with the experimental data. A good agreement between the simulated and experimental results is obtained. The model is general and by exploiting the refractive index and/or absorption characteristics at suitable wavelengths, the sensing of several substances or pollutants can be predicted.

scholarly journals Long Period Grating-Based Fiber Coupling to WGM Microresonators for Sensing Applications

2018 ◽  
Author(s):  
Francesco Chiavaioli ◽  
Dario Laneve ◽  
Daniele Farnesi ◽  
Mario Christian Falconi ◽  
Gualtiero Nunzi Conti ◽  
...  
Keyword(s):  
Glycerol Solution ◽  
Long Period Grating ◽  
Optical Microresonators ◽  
Whispering Gallery ◽  
Long Period ◽  
Thick Fiber ◽  
Sensing Applications ◽  
Long Period Gratings ◽  
Fiber Taper ◽  
Other Substances

A comprehensive model for designing robust all-in-fiber microresonator-based optical sensing setups is illustrated. The investigated all-in-fiber setups allow light to selectively excite high-Q whispering gallery modes (WGMs) into optical microresonators, thanks to a pair of identical long period gratings (LPGs) written in the same optical fiber. Microspheres and microbubbles are used as microresonators and evanescently side-coupled to a thick fiber taper, with a waist diameter of about 18 µm, in-between the two LPGs. The model is validated by comparing the simulated results with the experimental data. A good agreement between the simulated and experimental results is obtained. As an application example, the sensing of the concentration of an aqueous glycerol solution is demonstrated. The model is general and by exploiting the refractive index and/or absorption characteristics at suitable wavelengths, the sensing of other substances or pollutants can be also predicted.

scholarly journals A RESONANCE SYSTEM OF AN OPTOELECTRONIC OSCILLATOR BASED ON A TRANSMISSIONTYPE PLANAR OPTICAL DISK MICROCAVITY

2018 ◽  
Vol 42 (1) ◽  
pp. 60-66
Author(s):  
A. S. Zadorin ◽  
A. A. Lukina
Keyword(s):  
Traveling Wave ◽  
Optical Waveguides ◽  
Whispering Gallery Modes ◽  
Resonance System ◽  
Optoelectronic Oscillator ◽  
Disk Resonator ◽  
High Q ◽  
Optical Microresonators ◽  
Whispering Gallery ◽  
Planar Optical Waveguides

It is noted that the best technical characteristics of optoelectronic microwave self-oscillators (OESO) are reached in schemes employing high-Q optical microresonators (OMR) working in the traveling wave modes (TWM). A possibility of using disk OMRs excited by fundamental whispering gallery modes (WGM) has been considered. Multielement coupling devices (CD) for such resonators have been investigated. They are constructed on the basis of planar optical waveguides (POWG) located over the disk resonator surface in a region bounded by the outer and inner caustics of the WGM. Models of this device have been proposed. The corresponding calculations have been provided.

High-Q whispering gallery modes in pillar microcavities

2007 ◽  
Vol 32 (2-3) ◽  
pp. 123-126
Author(s):  
Y.-R. Nowicki-Bringuier ◽  
J. Claudon ◽  
C. Böckler ◽  
S. Reitzenstein ◽  
M. Kamp ◽  
...  
Keyword(s):  
Whispering Gallery Modes ◽  
High Q ◽  
Whispering Gallery

Study of whispering gallery modes in a cylindrical microresonator excited by a tilted fiber taper

2014 ◽  
Author(s):  
Vishnu Kavungal ◽  
Lin Bo ◽  
Qiang Wu ◽  
Mianzhen Teng ◽  
Chongxiu Yu ◽  
...  
Keyword(s):  
Whispering Gallery Modes ◽  
Whispering Gallery ◽  
Fiber Taper

Selective excitation of whispering-gallery modes and Fano resonance in a high-Q micro-capillary resonator with cleaned-up spectrum

2019 ◽  
Vol 12 (6) ◽  
pp. 062003
Author(s):  
Mengyu Wang ◽  
Lingjun Meng ◽  
Xueying Jin ◽  
Bolin Cai ◽  
Yongchao Dong ◽  
...  
Keyword(s):  
Fano Resonance ◽  
Selective Excitation ◽  
Whispering Gallery Modes ◽  
High Q ◽  
Whispering Gallery
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