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Long Period Grating-Based Fiber Coupling to WGM Microresonators
2018
Micromachines
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,
doi:10.3390/mi9070366
pmid:30424299
pmcid:PMC6082267
fatcat:hd3si5czejfitenw74izn6bqfq