4. Optical waveguides
  5. Planar optical waveguide

Tomiyuki Arakawa

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Optical waveguide device and manufacturing method therefor

Optical waveguides – Planar optical waveguide
Reexamination Certificate

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Variable optical gain control device

Optical waveguides – With optical coupler – Particular coupling structure
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Profile ID: LFUS-PAI-P-2749560

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