Electromagnetic mode conversion in photonic crystal multimode waveguides
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United States of America Patent
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May 13, 2003
Grant Date -
Feb 13, 2003
app pub date -
Jan 31, 2002
filing date -
Jan 31, 2001
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Abstract
A method for converting electromagnetic (EM) energy between guided modes of a photonic crystal waveguide having a waveguide axis, the method including: (i) providing the photonic crystal waveguide with a mode coupling segment comprising at least one bend in the waveguide axis, wherein during operation the mode coupling segment converts EM. energy in a first guided mode to a second guided mode; (ii) providing EM energy in the first guided mode of the photonic crystal waveguide; and (iii) allowing the EM energy in the first guided mode to encounter the mode coupling segment to convert at least some of the EM energy in the first guided mode to EM energy in the second guided mode.
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