S.L. Jansen, R.H. Derksen, et al.
OFC/NFOEC 2007
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.
S.L. Jansen, R.H. Derksen, et al.
OFC/NFOEC 2007
B.J. Offrein, G.L. Bona, et al.
IEEE Photonics Technology Letters
G.L. Bona, F. Horst, et al.
ECOC 2002
W.J. Kozlovsky, W. Lenth, et al.
Applied Physics Letters