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US 2020/0026147 A1Published application
Optical waveguide modulator
AssigneeElenion Technologies, LLC
InventorsAriel Leonardo Vera Villarroel, Alexander Rylyakov, Yangjin Ma
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Abstract
A dual-differential optical modulator includes two optical waveguide arms, each including one or more phase modulating p/n junctions. The p/n junctions in each waveguide arm are electrically coupled between a same pair of single-ended transmission lines so as to be differentially push-pull modulated when the transmission line pair is connected to a differential driver. Either cathode or anode electrodes of the p/n junctions are AC coupled to the transmission lines and DC biased independently on the transmission line signals.
Claims20
A modulator comprising:
- a first waveguide arm for guiding input light along a first path;
- a second waveguide arm for guiding input light along a second path;
- a first phase modulator (PM) formed in the first waveguide arm, the first PM comprising a first anode electrode and a first cathode electrode;
- a second phase modulator (PM) formed in the second waveguide arm, the second PM comprising a second anode electrode and a second cathode electrode;
- a first transmission line (TL) extending along the first waveguide arm and/or the second waveguide arm and electrically coupled to the first anode electrode and to the second cathode electrode;
- and
- a second transmission line (TL) extending along the first waveguide arm and/or the second waveguide arm and electrically coupled to the first cathode electrode and to the second anode electrode;
- and
- a driver configured to feed electrical drive signals into the first and second transmission lines.
6 more elements
Dependencies are inferred from the claim text.