Phase error compensation for multilayered AWG in LCOS-based WSS
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概要
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We propose a novel method to compensate for the phase errors of a multilayered arrayed waveguide grating (AWG) used in a liquid-crystal-on-silicon (LCOS)-based wavelength selective switch (WSS). In this scheme, an additional LCOS is employed to externally compensate for the phase errors of the AWG in a layer-by-layer manner for both planes of polarization. This compensation scheme enables us to improve the yield of the WSS: specifically, we demonstrate that the additional LCOS drastically reduces the loss and polarization-dependent loss (PDL) of the WSS.
著者
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HASAMA Toshifumi
National Institute of Advanced Industrial Science and Technology (AIST)
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ISHIKAWA Hiroshi
National Institute of Advanced Industrial Science and Technology (AIST)
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Kintaka Kenji
National Inst. Of Advanced Industrial Sci. And Technol.
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Tsuda Hiroyuki
Graduate School Of Science And Technology Keio University
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Uetsuka Hisato
Hitachi Cable Limited Optoelectronic System Laboratory
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MORI Masahiko
National Institute of Advanced Industrial Science and Technology
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Uetsuka Hisato
Hitachi Cable, Ltd.
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Sorimoto Keisuke
Graduate School of Science and Technology, Keio University
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Kawashima Hitoshi
National Institute of Advanced Industrial Science and Technology (AIST)
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