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Planar lightwave circuit, design method for wave propagation circuit, and computer program Grant 7,856,163 - Saida , et al. December 21, 2 | 2010-12-21 |
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Planar Lightwave Circuit, Design Method for Wave Propagation Circuit, and Computer Program App 20080273829 - Saida; Takashi ;   et al. | 2008-11-06 |
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Wavelength multiplexer/demultiplexer App 20060023989 - Yanagisawa; Masashiro ;   et al. | 2006-02-02 |
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Array waveguide diffraction grating type optical multiplexer/demultiplexer Grant 6,904,204 - Hida , et al. June 7, 2 | 2005-06-07 |
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Polarization desensitized optical waveguide interferometer Grant 6,757,454 - Inoue , et al. June 29, 2 | 2004-06-29 |
Optical waveguide and fabricating method thereof, and optical waveguide circuit Grant 6,625,370 - Itoh , et al. September 23, 2 | 2003-09-23 |
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Optical waveguide and fabricating method thereof, and optical waveguide circuit App 20020048443 - Itoh, Mikitaka ;   et al. | 2002-04-25 |