IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
Optical spectrum control circuit using an arrayed-waveguide grating and tunable phase shifters
Koichi KatoYuichiro IkumaHiroshi TakahashiTakayuki MizunoHiroyuki Tsuda
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2011 Volume 8 Issue 6 Pages 391-396

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Abstract

We proposed and fabricated an optical spectrum control circuit using an arrayed-waveguide grating (AWG) and an array of channel waveguides with tunable phase shifters. We found that the spectral phase and amplitude of a modulated optical signal could be arbitrarily controlled if the number of channel waveguides was set to be more than twice the number of waveguides in the AWG. As a first demonstration, we successfully obtained a flat band-pass filter function with the fabricated device by controlling the tunable phase shifters to control the interference between the light propagating through them.

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© 2011 by The Institute of Electronics, Information and Communication Engineers
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