Finite-Difference Time-Domain Analysis of Wavelength-Selective Characteristics in Weighted Acoustooptic Switches for Wavelength-Division-Multiplexed Photonic Routing
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- Goto Nobuo
- Department of Information and Computer Sciences, Toyohashi University of Technology
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- Miyazaki Yasumitsu
- Department of Electronics and Information Engineering, Aichi University of Technology
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Abstract
Waveguide-type acoustooptic (AO) switches can switch optical waves wavelength-selectively for wavelength-division-multiplexed (WDM) signals. The switches can be expected to be used in WDM photonic networks. In this paper, finite-difference time-domain (FDTD) analysis is presented for wavelength-selective switching with a collinear weighted AO device consisting of an optical directional coupler, input/output Y-branches and a tapered surface acoustic wave (SAW) waveguide. The FDTD simulated results are compared with the result from the coupled mode theory. It is shown that a sidelobe level as low as −20 dB in the filtering characteristics is realized by using weighted AO interaction. It is also shown that the sidelobe structure is affected by the characterisitcs of the input Y-branch.
Journal
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 43 (5B), 2958-2964, 2004
The Japan Society of Applied Physics
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Details 詳細情報について
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- CRID
- 1390001206264450048
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- NII Article ID
- 10013097730
- 30021854776
- 210000055581
- 130004532063
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- NII Book ID
- AA10457675
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- ISSN
- 13474065
- 00214922
- http://id.crossref.org/issn/00214922
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- NDL BIB ID
- 6957961
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed