Optical spectrum control circuit using an arrayed-waveguide grating and tunable phase shifters
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概要
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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.
著者
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Tsuda Hiroyuki
Graduate School Of Science And Technology Keio University
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Kato Koichi
Graduate School Of Natural Sciences Nagoya City University
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Takahashi Hiroshi
Ntt Photonics Laboratories Nippon Telegraph And Telephone Corp.
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Ikuma Yuichiro
Graduate School of Science and Technology, Keio University
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Mizuno Takayuki
NTT Photonics Laboratories, NTT Corporation
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