Title :
Second-order filter response with series-coupled silica microresonators
Author :
Savchenkov, A.A. ; Ilchenko, V.S. ; Handley, T. ; Maleki, L.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
4/1/2003 12:00:00 AM
Abstract :
We have demonstrated an approach for fabricating a photonic filter with second-order response function. The filter consists of two germania-doped silica microtoroidal or microspherical resonators cascaded in series. We use ultraviolet irradiation to tune the mode of one microcavity to bring it close to the mode of the second microcavity. This approach produces a filter function with much sharper rolloff than can be obtained with the individual microresonators.
Keywords :
micro-optics; microcavities; optical fibre fabrication; optical fibre filters; SiO/sub 2/; filter function; germania-doped silica microtoroidal resonators; microcavity; microspherical resonators; optical fibre filters; photonic filter fabrication; second-order filter response; series-coupled silica microresonators; sharper rolloff; ultraviolet irradiation; Erbium-doped fiber lasers; Frequency; Microcavities; Optical fiber couplers; Optical filters; Optical refraction; Optical resonators; Resonance; Resonator filters; Silicon compounds;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.809313
