4. Optical waveguides
  5. With optical coupler
  6. Input/output coupler

Seong Yun Ko

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Apparatus for controlling gain of an optical fiber amplifier and

Optical waveguides – With optical coupler – Input/output coupler
Patent

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Inter-symbol interference cancellation method for orthogonal...

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate

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System and a method for preventing tampering with a recorded...

Data processing: measuring – calibrating – or testing – Measurement system – Dimensional determination
Reexamination Certificate

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