OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION METHOD
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United States of America Patent
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Issued Date -
Jun 6, 2013
app pub date -
Oct 19, 2012
filing date -
Dec 6, 2011
priority date (Note) -
Abandoned
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Abstract
An optical transmitter includes a first Mach-Zehnder, second Mach-Zehnders, a plurality of electrodes and a shift circuit. The first Mach-Zehnder is formed in an LN substrate. The second Mach-Zehnders are formed in branch waveguides of the first Mach-Zehnder. The plurality of electrodes are set in the second Mach-Zehnders and modulate lights input in the second Mach-Zehnders using an electric potential of the electrodes. The shift circuit causes a phase difference between the lights modulated in the above plurality of electrodes and output from the second Mach-Zehnders. The Mach-Zehnder synthesizes the above lights of different phases and generates an output signal.
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