We demonstrate 1 x 1092 channel wavelength demultiplexing with 50-GHz channel pitch and a 600-nm total bandwidth. Outputs from 1 x 40 channel arrayed waveguide gratings operating with multiple orders enter a free-space optical grating demultiplexer which separates the orders into a 2-D spot array, where the light can be coupled into discrete output fibers or operated on by a surface normal device (i.e., microelectromechanical system switch or detector array). Supercontinuum source input from 1140 to 1750 nm produced a 28 x 39 spot array at the output plane. The insertion loss for light is coupled into a single mode fiber ranged from 7 to 18 dB with less than 10-dB loss in channels between 1300 and 1750 nm. Bit-error-rate measurements show a negligible 0.1-dB power penalty at 10 GB/s.
© 2007 IEEE
Trevor K. Chan, Jason Karp, Rui Jiang, Nikola Alic, Stojan Radic, Christopher F. Marki, and Joseph E. Ford, "1092 Channel 2-D Array Demultiplexer for Ultralarge Data Bandwidth," J. Lightwave Technol. 25, 719-725 (2007)