Abstract
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
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