Title :
Reduction of filter sidelobe level by an X-crossing vertical coupled ARROW filter
Author :
Chu, Sai T. ; Pan, W. ; Sato, S. ; Maeda, T. ; Little, B. ; Kokubun, Y.
Author_Institution :
3D Microphotonics Project, Acad. of Sci. & Technol., Kawasaki, Japan
fDate :
3/1/1998 12:00:00 AM
Abstract :
An antiresonant reflecting optical waveguide (ARROW) type vertical coupler filter exhibiting low sidelobe characteristics is demonstrated. The sidelobe level of the filter has been suppressed by using an X-crossing arrangement to provide strength apodization along the device. The main sidelobe of the fabricated filter is measured to be less than -17 dB with the central wavelength in the 1.55-μm region.
Keywords :
optical communication equipment; optical couplers; optical images; optical waveguide filters; wavelength division multiplexing; 1.55 mum; ARROW type vertical coupler filter; X-crossing vertical coupled ARROW filter; antiresonant reflecting optical waveguide; central wavelength; filter sidelobe level reduction; low sidelobe characteristics; strength apodization; Bandwidth; Filtering theory; Narrowband; Optical coupling; Optical filters; Optical waveguides; Planar waveguides; Propagation constant; Reflection; Tellurium;
Journal_Title :
Photonics Technology Letters, IEEE
