Photonic crystal waveguide, homogeneous medium waveguide,...

Details Photonic crystal waveguide, homogeneous medium waveguide,... Photonic crystal waveguide, homogeneous medium waveguide,...

2007-12-18

2007-12-18

Leung, Quyen P (Department: 2874)

Optical waveguides

Planar optical waveguide

Thin film optical waveguide

C385S014000, C385S031000

Reexamination Certificate

active

10565012

ABSTRACT:
A photonic crystal waveguide and a homogeneous medium waveguide for enabling a steep bend and arrangement at an arbitrary angle with low propagation loss. A photonic crystal waveguide has a core formed by a photonic crystal having periodicity in the Y-direction. Electromagnetic wave is propagated by a band on the Brillouin zone boundary of the photonic band structure of the core. A side face of the core parallel to the Y-direction is in contact with a homogeneous medium having a refractive index of ns, and the condition of λ0
s>aλ/(λ2/4+a2)0.5is satisfied when the wavelength in vacuum of the electromagnetic wave is represented by λ0, the period of the photonic crystal is represented by a, and the period in the XZ-plane direction of the wave propagated through the core is represented by λ.

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