A novel structure of arrayed-waveguide grating (AWG) multiplexers with a graded-index free-propagation region (FPR) used to increase the wavelength pass band is presented. The 1-dB and 3-dB wavelength pass bands increase with the increase of the graded-index FPR length. Flat and broadened spectral responses are obtained by using this novel structure.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering