Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1989-11-13
1992-05-12
LaRoche, Eugene R.
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359249, 359276, 385 2, 357 16, 357 30, G02F 103, G02F 1035, H01L 29161, H01L 2714
Patent
active
051132834
ABSTRACT:
An optical intensity modulator includes a compound semiconductor substrate of a first conductivity type having first and second surfaces, and a compound semiconductor active layer of the first conductivity type formed on the first surface of the compound semiconductor substrate. An incident laser beam to be intensity-modulated is applied to the compound semiconductor active layer. The modulator further includes a compound semiconductor layer of the first conductivity type formed on the compound semiconductor active layer, an opposite conductivity type compound semiconductor layer of a second conductivity type opposite to the first conductivity type, a first electrode formed on the opposite conductivity type compound semiconductor layer, and a second electrode formed on the second surface of the compound semiconductor substrate.
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Fujitsu
LaRoche Eugene R.
Lester Evelyn A.
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