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US 12,022,246 B2Granted
Optical signal processing apparatus
AssigneeNippon Telegraph and Telephone Corporation
InventorsKeita Yamaguchi, Kenya Suzuki, Takashi Go, Osamu Moriwaki, Ai Yanagihara
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Abstract
In order to reduce the number of power driving elements, an optical signal processing device includes a control unit, a current generation unit, a connection portion, and an optical signal processing unit, the current generation unit includes one or a plurality of power driving elements s, the optical signal processing unit is an optical waveguide on a substrate, and a plurality of driven elements are connected in parallel to an identical one of the plurality of power driving elements and are driven.
Claims15
An optical signal processing device comprising:
- a control unit,
- one or a plurality of power driving elements,
- a current generation unit,
- a connection portion, and
- an optical signal processing unit,
- the optical signal processing unit includes an optical waveguide on a substrate, and
- a plurality of phase shifters are driven in parallel with a single power voltage by the one or a plurality of power driving element,
- wherein the optical signal processing unit is configured as an M×N optical switch and includes:
- q multi-input N-output optical switches having a first type of MZIs, wherein the first type MZIs are not controlled in a push-pull driven manner;
- and
- N q×1 switches having a second type of MZIs and being connected to each output port of the q multi-input N-output optical switches, wherein the second type of MZIs are controlled in a push-pull driven manner;
- wherein the phase shifters are heaters disposed respectively on one arm of the first type of MZIs and on both arms of the second type of MZIs,
- and
- wherein a resistance value of the heater disposed in the second type of MZI is twice a resistance value of the heater disposed in the first type of MZI, and
- widths or lengths of the heaters differ between the first type of MZI and the second type of MZI in a chip of the optical waveguide.
12 more elements
An optical signal processing device comprising:
- a control unit,
- one or a plurality of power driving elements,
- a connection portion, and
- an optical signal processing unit,
- the optical signal processing unit includes an optical waveguide on a substrate, and
- a plurality of phase shifters are driven in parallel with a single power voltage by the one or a plurality of power driving element,
- wherein the optical signal processing unit is configured as a M×N optical switch and includes:
- q M-input multi-output optical switches having a first type of MZIs, wherein the first type of MZIs are not controlled in a push-pull driven manner;
- and
- M 1×q switches having a second type of MZIs and being connected to each input port of the q M-input multi-output optical switches, wherein the second type of MZIs are controlled in a push-pull driven manner;
- wherein the phase shifters are heaters disposed respectively on one arm of the first type of MZIs and on both arms of the second type of MZIs,
- wherein a resistance value of the heater disposed in the second type of MZI is twice a resistance value of the heater disposed in the first type of MZI;
- and
- widths or lengths of the heaters differ between the first type of MZI and the second type of MZI in a chip of the optical waveguide.
11 more elements
An optical signal processing device comprising:
- a control unit,
- one or a plurality of power driving elements,
- a connection portion, and
- an optical signal processing unit,
- the optical signal processing unit includes an optical waveguide on a substrate, and
- a plurality of phase shifters are driven in parallel with a single power voltage by the one or a plurality of power driving element,
- wherein the optical signal processing unit is configured as a M×N MCSs and includes:
- q multi-input N-output MCSs having a first type of MZIs, wherein the first type of MZIs are not controlled in a push-pull driven manner;
- and
- N q×1 switches having a second type of MZIs and being connected to each output port of the multi-input N-output MCSs, wherein the second type of MZIs are controlled in a push-pull driven manner;
- wherein the phase shifters are heaters disposed respectively on one arm of the first type of MZIs and on both arms of the second type of MZIs,
- wherein a resistance value of the heater disposed in the second type of MZI is twice a resistance value of the heater disposed in the first type of MZI;
- and
- widths or lengths of the heaters differ between the first type of MZI and the second type of MZI in a chip of the optical waveguide.
11 more elements
Dependencies are inferred from the claim text.