Title :
Fabrication of narrow-band channel-dropping filters
Author :
Levy, M. ; Eldada, L. ; Scarmozzino, R. ; Osgood, R.M., Jr. ; Lin, P.S.D. ; Tong, F.
Author_Institution :
Microelectron. Sci. Lab., Columbia Univ., New York, NY, USA
Abstract :
The first fabrication and demonstration of narrowband channel-dropping filters, which have recently been proposed for use in high-bit-rate communication systems, is described. The devices use waveguide couplers combined with quarter-wave-shifted distributed-feedback (DFB) resonators and can, in principle, produce resonant transfer of 50% of incident power with sub-angstrom bandwidths. Resonant transfer of power at the expected wavelength and within the expected range of efficiency and bandwidth for this design is shown.<>
Keywords :
feedback; integrated optics; optical communication equipment; optical couplers; optical filters; optical resonators; optical waveguides; optical workshop techniques; DFB resonators; GaAs planar slab waveguide; bandwidth; distributed-feedback; efficiency; expected wavelength; high-bit-rate communication systems; incident power; narrow-band channel-dropping filters; optical filter fabrication; quarter-wave-shifted; resonant transfer; semiconductors; sub-angstrom bandwidths; waveguide couplers; Bandwidth; Couplings; Etching; Fabrication; Gratings; Narrowband; Optical filters; Optical resonators; Optical waveguides; Resonance;
Journal_Title :
Photonics Technology Letters, IEEE
