Linearized modulator
AssigneeRockley Photonics Limited
InventorsAdam SCOFIELD, Thomas Pierre SCHRANS, Aaron John ZILKIE
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Abstract
An electro-optical modulator. The electro-optical modulator comprising: an input waveguide, configured to guide light into a modulation region of the electro-optical modulator; a plurality of sub-modulators, within the modulation region, each sub-modulator having a transfer function between an applied voltage and an optical phase shift; and an output waveguide, configured to guide light out of the modulation region. The combination of the transfer functions of each sub-modulator is such that a total transfer function between an applied voltage and an optical phase shift of the modulation region is substantially linear over a range of operating voltages.
Claims22
An electro-optical modulator, comprising:
- an input waveguide, configured to guide light into a modulation region of the electro-optical modulator;
- a plurality of sub-modulators, within the modulation region, each sub-modulator having a transfer function between an applied voltage and an optical phase shift;
- and
- an output waveguide, configured to guide light out of the modulation region;
- wherein a combination of the transfer functions of each sub-modulator is such that a total transfer function between an applied voltage and an optical phase shift of the modulation region is substantially linear over a range of operating voltages.
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Dependencies are inferred from the claim text.