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Ultrasmall demultiplexer by use of one-dimensional photonic crystal

Kazuaki Oya, Tatsuhiro Nakazawa, Shigeo Kittaka, Keiji Tsunetomo, Kenji Kintaka, Junji Nishii, and Kazuyuki Hirao

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Abstract

Silica-based one-dimensional photonic crystal (1D-PC) is fabricated by use of a high-spatial-frequency grating with input and output surfaces tilted with respect to its periodic direction. An incident beam is coupled with the first photonic band in the second Brillouin zone of the 1D-PC. The output beam angle changes 3° with a wavelength change of 1%. A prototype of an ultrasmall demultiplexer is demonstrated by use of a silica slab waveguide with 1D-PC.

© 2005 Optical Society of America

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