Modulator-integrated wavelength-selecting light emitting device and method of controlling the same
OwnerYukihiro Hisanaga, Takao Morimoto +1inventors
InventorsYukihiro Hisanaga, Takao Morimoto, Masayuki Yamaguchi
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Abstract
The present invention provides a method of controlling a wavelength-selective light emitting device comprising an array of plural semiconductor laser diodes differing in diffraction grating pitch; at least a multiplexer; and at least a modulator, wherein an absorption edge wavelength of the modulator is controlled following to an oscillation wavelength of selected one of the plural laser diodes.
Claims40
A method of controlling a wavelength-selective light emitting device comprising:
- an array of plural semiconductor laser diodes differing in diffraction grating pitch;
- at least a multiplexer;
- and at least a modulator,
- wherein an absorption edge wavelength of said modulator is controlled following to an oscillation wavelength of selected one of said plural laser diodes.
A method of controlling a wavelength-selective light emitting device comprising:
- a single semiconductor laser diode;
- a semiconductor optical amplifier;
- and a modulator,
- wherein an absorption edge wavelength of said modulator is controlled following to an oscillation wavelength of selected one of said plural laser diodes.
A wavelength-selective light emitting device comprising:
- an array of plural semiconductor laser diodes differing in diffraction grating pitch;
- at least a multiplexer;
- at least a modulator;
- a temperature controller for controlling said device in temperature, so that an absorption edge wavelength of said modulator is controlled following to an oscillation wavelength of selected one of said plural laser diodes.
Dependencies are inferred from the claim text.