Title :
Wavelength trimming of a microring resonator filter by means of a UV sensitive polymer overlay
Author :
Chu, Sai T. ; Pan, W. ; Sato, S. ; Kaneko, T. ; Little, B.E. ; Kokubun, Y.
Author_Institution :
Microphotonics Project, Kanagawa Acad. of Sci. & Technol., Kawasaki, Japan
fDate :
6/1/1999 12:00:00 AM
Abstract :
Trimming of the resonant wavelength of a vertically coupled glass microring resonator channel dropping filter with a photo-induced refractive index change in a dip coated polymer overlay is reported. The glass microring resonator has a radius of 19 μm, a free-spectral range of 10 nm, and a Q value of 800. The maximum wavelength shift observed is 9 nm, which is yielded through an absolute bulk index change in the polymer of 0.044. Trimming is a continuous function of exposure time and dose.
Keywords :
integrated optics; optical communication equipment; optical couplers; optical films; optical polymers; optical resonators; optical waveguide filters; refractive index; wavelength division multiplexing; 38 mum; Q value; UV sensitive polymer overlay; absolute bulk index change; continuous function; dip coated polymer overlay; exposure dose; exposure time; free-spectral range; glass microring resonator; maximum wavelength shift; microring resonator filter; photo-induced refractive index change; resonant wavelength; vertically coupled glass microring resonator channel dropping filter; wavelength trimming; Glass; Optical filters; Optical resonators; Optical ring resonators; Optical tuning; Optical waveguides; Polymer films; Refractive index; Resonance; Resonator filters;
Journal_Title :
Photonics Technology Letters, IEEE
