Optical: systems and elements – Optical amplifier – Particular active medium
Reexamination Certificate
2011-01-04
2011-01-04
Bolda, Eric (Department: 3663)
Optical: systems and elements
Optical amplifier
Particular active medium
C359S336000, C372S045013
Reexamination Certificate
active
07864412
ABSTRACT:
An active layer has a quantum well structure formed of InGaAsP, and includes a saturable absorption region and optical amplification regions. To the saturable absorption region, a voltage is applied through a p-electrode, independent from the optical amplification region. To the optical amplification regions, currents are injected through p-electrodes, respectively. An input light Pin entering through a plane of incidence is generated by adding optical noise of white noise, to a light signal assuming binary optical intensity of “1” or “0”. The saturable absorption region and optical amplification regions are formed satisfying conditions that a waveform converting element provides a semiconductor laser of bistable state.
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Matsuda Kyoko
Okumura Toshiyuki
Birch & Stewart Kolasch & Birch, LLP
Bolda Eric
Sharp Kabushiki Kaisha
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