Electro-optical integrated transmitter chip for arbitrary quadrature modulation of optical signals
First Claim
1. An optical device, comprising:
- a first Mach-Zehnder modulator that produces a first output;
a second Mach-Zehnder modulator that produces a second output;
a splitter coupled to the first and second Mach-Zehnder modulators;
a combiner that combines the first and second outputs; and
a phase shifter coupled to the first and second Mach-Zehnder modulators, wherein the first Mach-Zehnder modulator, the second Mach-Zehnder modulator, the splitter, the combiner and the phase shifter are formed as part of a single planar chip made of electro-optical material.
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Abstract
An optical device includes, a first Mach-Zehnder modulator that produces a first output, and a second Mach-Zehnder modulator which produces a second output. A splitter couples the first and second Mach-Zehnder modulators. A combiner combines the first and second outputs. A phase shifter is coupled to the first and second Mach-Zehnder modulators. The first Mach-Zehnder modulator, second Mach-Zehnder modulator, splitter, combiner and the phase shifter are each formed as part of a single chip made of electro-optical material. Such two similar optical device integrated together with polarization combiner provide a two-polarization performance.
84 Citations
69 Claims
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1. An optical device, comprising:
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a first Mach-Zehnder modulator that produces a first output;
a second Mach-Zehnder modulator that produces a second output;
a splitter coupled to the first and second Mach-Zehnder modulators;
a combiner that combines the first and second outputs; and
a phase shifter coupled to the first and second Mach-Zehnder modulators, wherein the first Mach-Zehnder modulator, the second Mach-Zehnder modulator, the splitter, the combiner and the phase shifter are formed as part of a single planar chip made of electro-optical material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. An optical device, comprising:
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a first Mach-Zehnder modulator that produces a first output;
a second Mach-Zehnder modulator that produces a second output;
a third Mach-Zehnder modulator that produces a third output;
a fourth Mach-Zehnder modulator that produces a fourth output;
a first input splitter coupled to the first and second Mach-Zehnder modulators;
a first phase shifter coupled to the first and second outputs;
a first output combiner positioned to combine the first and second outputs from the first and second Mach-Zehnder modulators;
a second input splitter coupled to the third and fourth Mach-Zehnder modulators;
a second phase shifter coupled to the third and fourth outputs; and
a second output combiner positioned to combine the third and fourth outputs. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A method of producing an optical output, comprising:
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providing an optical device with first and second Mach-Zehnder modulators formed as part of a single planar chip made of electro-optical material;
producing a first output from the first Mach-Zehnder modulator;
producing a second output from the second Mach-Zehnder modulator; and
combining the first and second outputs to produce a combined output. - View Dependent Claims (50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68)
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69. A method for dual polarization transmission, comprising:
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providing a device that includes a first optical device with first and second Mach-Zehnder modulators, and a second optical device with third and fourth Mach-Zehnder modulators, the first and second optical devices being formed as part of a single planar chip made of electro-optical material;
producing from the first optical device of a first output with a first polarization;
producing from the second optical device a second output with a second polarization;
combining the first and second outputs to produce a beam with two orthogonal polarization signals.
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Specification