Long period gratings based frequency selective interrogation of micro-resonators along the same fiber

D. Farnesi; F. Chiavaioli; F. Baldini; F. Cosi; G. C. Righini; S. Soria; C. Trono; G. Nunzi Conti

doi:10.1117/12.2213706

22 April 2016 Long period gratings based frequency selective interrogation of micro-resonators along the same fiber

D. Farnesi, F. Chiavaioli, F. Baldini, F. Cosi, G. C. Righini, S. Soria, C. Trono, G. Nunzi Conti

Proceedings Volume 9727, Laser Resonators, Microresonators, and Beam Control XVIII; 972703 (2016) https://doi.org/10.1117/12.2213706
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

A novel optical fiber coupler to whispering gallery mode (WGM) micro-resonators, which allows frequency selective addressing of different micro-resonators along the same fiber, is proposed. The coupling unit is based on a pair of identical long period fiber gratings (LPGs) and a thick adiabatic taper (>15 μm in waist) in between, where evanescent coupling from cladding modes to WGMs takes place. This robust unit can be replicated more times along the same fiber, simply cascading LPGs with different bands. Independent addressing of two different resonators along the same fiber is demonstrated.

Citation Download Citation

D. Farnesi, F. Chiavaioli, F. Baldini, F. Cosi, G. C. Righini, S. Soria, C. Trono, and G. Nunzi Conti "Long period gratings based frequency selective interrogation of micro-resonators along the same fiber", Proc. SPIE 9727, Laser Resonators, Microresonators, and Beam Control XVIII, 972703 (22 April 2016); https://doi.org/10.1117/12.2213706

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