Optical waveguides – Planar optical waveguide
Reexamination Certificate
2006-06-27
2006-06-27
Pak, Sung (Department: 2874)
Optical waveguides
Planar optical waveguide
C385S131000
Reexamination Certificate
active
07068903
ABSTRACT:
An optical element, composed of an one-dimensional photonic crystal of a triangular prism shape and a multilayer film and a phase modulation unit are used together, with the phase modulation unit adjacent or abutting to a light input end surface of the optical element. Input light is phase-modulated by the phase modulation unit in the same period and direction as those of photonic crystal so that only specific high-order band light can be propagated through the optical element. When this optical element is formed in an optical waveguide, a small-size spectroscopic device having high resolving power can be provided.
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Asai Takahiro
Kittaka Shigeo
Nara Masatoshi
Oya Kazuaki
Tsunetomo Keiji
Nippon Sheet Glass Co. Ltd.
Pak Sung
Whitham Curtis Christofferson & Cook, P.C.
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