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Expansion of channel number in optical demultiplexer using cascaded photopolymer volume gratings

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4 Author(s)
Jun Won An ; Res. Center, LGS Corp., Gyeonggi-Do, South Korea ; Due Dung Do ; Nam Kim ; Kwon Yeon Lee

A method to expand the number of channels in the optical demultiplexer (DMUX) using two cascaded photopolymer volume gratings is proposed and presented. A 0.4-nm-spaced 130-channel DMUX with the channel uniformity of 3.5 dB, the 3-dB bandwidth of 0.12 nm, and the channel crosstalk of -20 dB is experimentally demonstrated.

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 6 )