Conference paper
Wavelength-Tunable add/drop filter for optical networks
R. Germann, R. Beyeler, et al.
OFC/IOOC 1999
An adaptive gain equalization filter is presented. The filter is based on the resonant coupler principle, a cascade of power couplers and delay lines. Reconfigurability and tuning is achieved by varying coupling strength and delay line length via the thermo optic effect. A device consisting of seven delay line stages was realized in high-index-contrast silicon-oxynitride technology. This device flattens the ASE spectrum of an EDFA to a ripple of less than 0.5 dB over 35 nm. The on-chip losses are 2 dB.
R. Germann, R. Beyeler, et al.
OFC/IOOC 1999
F. Horst, R. Beyeler, et al.
IPR 2000
R. Germann, H. Salemink, et al.
JES
G.L. Bona, B.J. Offrein, et al.
SPIE Photonics Europe 2004