Light coupling between the whispering gallery modes of a coated microsphere and a tapered fiber

Author

Ristic, D. ; Mazzola, M. ; Chiappini, Andrea ; Feron, Patrice ; Rasoloniaina, Alphonse ; Cibiel, Gilles ; Ivanda, M. ; Righini, Giancarlo C. ; Ferrari, Mauro

Author_Institution

CSMFO Lab., IFN, Trento, Italy

fYear

2013

fDate

20-24 May 2013

Firstpage

34

Lastpage

37

Abstract

Spherical microresonators were coated using a 70SiO₂ - 30HfO₂ glass doped with 0.3 mol% Er³⁺. The sphere was characterized by coupling a 1480 nm pump laser inside the sphere using a tapered optical fiber and observing the 1530-1580 nm Er³⁺ emission outcoupled with the same tapered fiber. The measurements were done for different coating thicknesses and compared with theoretical calculations to understand the relationship of the detected signal with the whispering gallery mode electric field profiles.

Keywords

coatings; electric sensing devices; erbium; fibre optic sensors; hafnium compounds; microcavities; microdisc lasers; micromechanical resonators; micropumps; microsensors; signal detection; silicon compounds; thickness measurement; whispering gallery modes; SiO₂-HfO₂:Er; coated microsphere; light coupling; pump laser; signal detection; spherical microresonator; tapered optical fiber; thickness measurement; wavelength 1480 nm; wavelength 1530 nm to 1580 nm; whispering gallery mode electric field profile; Coatings; Couplings; Laser excitation; Luminescence; Optical fibers; Refractive index; Whispering gallery modes;

fLanguage

English

Publisher

ieee

Conference_Titel

Information & Communication Technology Electronics & Microelectronics (MIPRO), 2013 36th International Convention on

Conference_Location

Opatija

Print_ISBN

978-953-233-076-2

Type

conf

Filename

6596220