Title :
Resonant couplers acting as add-drop filters made with silica-on-silicon waveguide technology
Author :
Yaffe, Henry H. ; Henry, Charles H. ; Serbin, Michael R. ; Cohen, Leonard G.
Author_Institution :
AT&T Bell Labs., Norcross, GA, USA
fDate :
6/1/1994 12:00:00 AM
Abstract :
Add-drop filters are demonstrated using silica-on-silicon optical waveguide technology. This device consists of a full directional coupler subdivided by Mach-Zehnder sections. Tapering of the coupling coefficients is experimentally shown to dramatically reduce the filters´ sidelobes. Only one photolithographic step is required using the silica planar waveguide technology, yielding accurate wavelength control of the filters. Excellent agreement between measurement and design was achieved
Keywords :
directional couplers; light interferometers; optical communication equipment; optical couplers; optical filters; photolithography; silicon; silicon compounds; Mach-Zehnder sections; Si; SiO2; SiO2 on Si waveguide technology; SiO2 planar waveguide technology; accurate wavelength control; add-drop filters; coupling coefficients; design; filters´ sidelobes; full directional coupler; measurement; photolithographic step; resonant couplers; Directional couplers; Multiplexing; Optical arrays; Optical filters; Optical interferometry; Optical reflection; Optical waveguides; Propagation constant; Resonance; Silicon compounds;
Journal_Title :
Lightwave Technology, Journal of
