Open AccessPost-fabrication tuning of microring resonators using 3D-printed microfluidics
Author(s) -
Kevin Larson,
Alec M. Hammond,
Christian Carver,
D. M. Anderson,
Matthew Viglione,
Mawla Boaks,
Gregory P. Nordin,
Ryan Camacho
Publication year - 2021
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.433987
Subject(s) - resonator , refractive index , cladding (metalworking) , microfluidics , materials science , optics , free spectral range , wavelength , fabrication , optoelectronics , silicon , photonics , nanotechnology , physics , medicine , alternative medicine , pathology , metallurgy
We demonstrate a method of tuning the resonant frequencies of silicon microring resonators using a 3D-printed microfluidic chip overlaid directly on the photonic circuit with zero energy consumption following the initial tuning. Aqueous solutions with different concentrations of NaCl are used in experimentation. A shift of a full free spectral range is observed at a concentration of 10% NaCl. On a 60 µm microring resonator, this equals a resonant wavelength shift of 1.514 nm when the index of the cladding changes by 0.017 refractive index units (RIUs), or at a rate of 89.05 nm/RIU.