Title :
Tunable passband flattened 1-from-16 binary-tree structured add-after-drop multiplexer using SiON waveguide technology
Author :
Roeloffzen, C.G.H. ; Horst, F. ; Offrein, B.J. ; Germann, R. ; Bona, G.L. ; Salemink, H.W.M. ; de Ridder, R.M.
Author_Institution :
IBM Res. Div., Ruschlikon, Switzerland
Abstract :
A tunable, flat-passband, 1-from-16 add/drop multiplexer for wavelength-division-multiplexing networks is presented. The device is realized in high-index-contrast silicon-oxynitride waveguide technology and is based on cascaded resonant coupler alters in the form of a mirrored binary tree. Tunability is obtained using the thermo-optic effect. The isolation of the transit channels at the drop port is better than 18 dB, and the rejection of the drop channel at the output port is 26 dB.
Keywords :
integrated optics; multiplexing equipment; optical couplers; optical filters; optical tuning; optical waveguides; silicon compounds; thermo-optical effects; SiON waveguide technology; cascaded resonant coupler; drop channel; drop port; high-index-contrast silicon-oxynitride waveguide technology; mirrored binary tree; output port; thermo-optic effect; transit channels; tunable passband flattened 1-from-16 binary-tree structured add-after-drop multiplexer; wavelength-division-multiplexing networks; Add-drop multiplexers; Band pass filters; Binary trees; Isolation technology; Laboratories; Optical filters; Optical waveguides; Passband; Resonance; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
