Title :
Integrated all-pass filters for tunable dispersion and dispersion slope compensation
Author :
Madsen, C.K. ; Lenz, G. ; Bruce, A.J. ; Cappuzzo, M.A. ; Gomez, L.T. ; Scotti, R.E.
Author_Institution :
Lucent Technol., AT&T Bell Labs., Murray Hill, NJ, USA
Abstract :
New integrated optical all-pass filters are presented that can be used for tunable dispersion compensation, dispersion slope compensation, and as building blocks in tunable bandpass filters. The dispersion slope compensation capability is demonstrated using ring resonators in /spl Delta/=2% Ge-doped silica planar waveguides. In addition, a tunable four-stage filter with free-spectral range (FSR)=25 GHz, a passband width of 14 GHz (0.56/spl times/FSR), and D=1800 ps/nm is reported.
Keywords :
all-pass filters; compensation; optical communication equipment; optical fibre dispersion; optical fibre filters; optical planar waveguides; optical resonators; optical tuning; resonator filters; wavelength division multiplexing; SiO/sub 2/:Ge; SiO/sub 2/:Ge planar waveguides; WDM systems; dispersion slope compensation; free-spectral range; integrated optical all-pass filters; passband width; phase equalization; ring resonators; tunable bandpass filters; tunable dispersion compensation; tunable four-stage filter; Band pass filters; Integrated optics; Optical filters; Optical planar waveguides; Optical ring resonators; Optical waveguides; Passband; Planar waveguides; Resonator filters; Silicon compounds;
Journal_Title :
Photonics Technology Letters, IEEE
