Multi-section mismatched modulator for optimal power
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United States of America
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Dec 24, 2024
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N/A
app pub date -
Dec 17, 2021
filing date -
Dec 17, 2021
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Abstract
Aspects of the present disclosure are directed to a multi-section mismatched modulator. In one embodiment, a segmented bias electrode is provided along the length of the optical waveguide in the optical modulator. Each segmented bias electrode may have a pre-determined bias voltage that can reduce impedance mismatches along the length of the signal electrode to reduce echoes and ripples in the modulation signal. In an embodiment implemented as a P-I-N diode modulator, the bias electrode is used to apply a reverse bias transversely to the section of the diode modulator between the bias electrode and the signal electrode. According to an aspect, RF impedance along the length of the signal electrode can be tuned by adjusting the magnitude of the reverse-bias point at different segments of the bias electrode, and be matched to a desirable impedance value to reduce reflection and ripple effects.
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