Coherent light generators – Particular beam control device – Modulation
Patent
1995-04-28
1997-08-19
Davie, James W.
Coherent light generators
Particular beam control device
Modulation
372 29, 372 32, 372 50, H01S 310
Patent
active
056595603
ABSTRACT:
In a light source apparatus, the polarization mode of oscillation light from a semiconductor laser is switchable between two different polarization modes when a modulation current is injected into a portion of a light waveguide of the semiconductor laser. Light in one polarization mode and light in the other polarization mode are separately obtained from the oscillation light from the semiconductor laser. At least the light in one of the two different polarization modes is converted to an electric signal. Current injected into the semiconductor laser is controlled based on the electric signal such that a modulation state of light from the semiconductor laser is stabilized. The light in the other polarization mode, or light in one polarization mode emitted from the other emission side of the semiconductor laser may be used for optical transmission.
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Kubota Ouichi
Majima Masao
Mishima Seiji
Nitta Jun
Ouchi Toshihiko
Canon Kabushiki Kaisha
Davie James W.
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