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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 31,
  • Issue 1,
  • pp. 87-93
  • (2013)

Optimized Silicon AWG With Flattened Spectral Response Using an MMI Aperture

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Abstract

We demonstrate compact 12-channel 400 GHz arrayed waveguide grating wavelength demultiplexers (AWG) in silicon with a flattened spectral response. Insertion loss, crosstalk and non-uniformity are -3.29 dB, 17.0 dB and 1.55 dB, respectively. The flattened spectral response is obtained by using an optimized mode shaper consisting of a multi-mode interference coupler as the input aperture of the AWG. The ratio of the 1 dB bandwidth to the 10 dB bandwidth is improved by 50%, from 0.33 to 0.49 compared to a conventional AWG. The device size is only 560 × 350 µm2.

© 2012 IEEE

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