Electro-optic modulator
AssigneeQubig GmbH
InventorsEnrico Vogt, Daniel Pertot
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Abstract
An electro-optic modulator for modulating a beam of electro-magnetic radiation having a beam path and a beam axis is of a transverse type and comprises: a modulator element that is positioned in the beam path, a housing for receiving the modulator element, which housing forms a resonant cavity, and a coupling device for inputting modulating energy into the housing such that a resonant standing wave is generated within the housing. The housing comprises at least one sidewall that extends substantially parallel to the beam axis over a length, wherein the at least one sidewall comprises a deformed portion such that in the resonant cavity a distance between the sidewall and the beam axis in a direction perpendicular to the beam axis varies over at least a portion of the length of the sidewall.
Claims19
An electro-optic modulator for modulating a beam of electro-magnetic radiation having a beam path and a beam axis, wherein the electro-optic modulator is of a transverse type and comprises:
- a modulator element that is positioned in the beam path,
- a housing for receiving the modulator element, which housing forms a single resonant cavity, the housing having a first end and a second end and extending along the beam path over a length from the first end to the second end, and the length exceeds a width of the housing perpendicular to its length, and
- a coupling device for inputting modulating energy into the housing such that a resonant standing wave with an electric field vector of the standing wave being perpendicular to the beam axis is generated within the housing, the coupling device comprising a rod-shaped element that extends into the housing,
- wherein the housing comprises at least one sidewall that extends substantially parallel to the beam axis over the length of the housing from the first end to the second end, and
- wherein the at least one sidewall comprises a deformed portion such that in the resonant cavity a distance between the sidewall and the beam axis in a direction perpendicular to the beam axis spatially varies along at least a portion of the length of the sidewall, wherein the deformed portion accommodates the coupling device.
A method of producing an electro-optic modulator for modulating a beam of electro-magnetic radiation having a beam path and a beam axis, wherein the electro-optic modulator is of a transverse type and comprises:
- a modulator element that is positioned in the beam path,
- a housing for receiving the modulator element, which housing forms a single resonant cavity, the housing having a first end and a second end and extending along the beam path over a length from the first end to the second end, and the length exceeds a width of the housing perpendicular to its length, and
- a coupling device for inputting modulating energy into the housing such that a resonant standing wave with an electric field vector of the standing wave being perpendicular to the beam axis is generated within the housing, the coupling device comprising a rod-shaped element that extends into the housing,
- wherein the housing comprises at least one sidewall that extends substantially parallel to the beam axis over the length of the housing from the first end to the second end, and
- wherein the method comprises a step of adapting the shape of the at least one sidewall to form a deformed portion such that in the resonant cavity a distance between the sidewall and the beam axis perpendicular to the beam axis spatially varies along at least a portion of the length of the sidewall, wherein the deformed portion accommodates the coupling device.
An electro-optic modulator for modulating a beam of electro-magnetic radiation having a beam path and a beam axis, wherein the electro-optic modulator is of a transverse type and comprises:
- a modulator element that is positioned in the beam path,
- a housing for receiving the modulator element, which housing forms a resonant cavity,
- a coupling device for inputting modulating energy into the housing such that a resonant standing wave is generated within the housing, the coupling device comprising a rod-shaped element that extends into the housing, and
- an impedance matching element that comprises a first end, wherein a distance between the first end of the impedance matching element and the coupling device can be adjusted, and
- wherein the housing comprises at least one sidewall that extends substantially parallel to the beam axis over a length of the housing, the at least one sidewall comprising a deformed portion that accommodates the coupling device.
Dependencies are inferred from the claim text.