4. Optical: systems and elements
  5. Optical amplifier
  6. Particular active medium

Frank Levinson

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Add/drop module for single fiber wavelength division...

Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate

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Circulator and polarization beam combiner

Optical: systems and elements – Polarization without modulation – By relatively adjustable superimposed or in series polarizers
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Integrated variable optical attenuator

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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Linear semiconductor optical amplifier with broad area laser

Optical: systems and elements – Optical amplifier – Particular active medium
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Optical identification chips

Registers – Records – Conductive
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Profile ID: LFUS-PAI-P-2615578

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