4. Optical waveguides
  5. With optical coupler
  6. Particular coupling function

Takashi Toyonaka

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Optical isolator, optical circuit, and rare-earth-doped fiber op

Optical waveguides – With optical coupler – Particular coupling function
Patent

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Semiconductor laser devices

Coherent light generators – Particular active media – Semiconductor
Patent

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Semiconductor optical receiver device, optical receiver...

Active solid-state devices (e.g. – transistors – solid-state diode – Heterojunction device – Light responsive structure
Reexamination Certificate

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Semiconductor photodetector device and manufacturing method...

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Electromagnetic or particle radiation
Reexamination Certificate

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