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US 2014/0231627 A1Published application
Opto-electronic integrated circuit, array antenna transmitter, array antenna receiver, and transmitter
AssigneesNTT Electronics Corporation, Nippon Telegraph and Telephone Corporation
InventorsAtsushi Wakatsuki, Tadao Ishibashi
Life of this patent
Estimating the term…
Abstract
An opto-electronic integrated circuit includes an optical splitter (12, 13A, 13B) formed on a substrate, the optical splitter branching an input optical signal into N (N is an integer of 2 or more) optical signals, and outputting the optical signals, and N optical phase modulators (15A-15D) formed on the substrate for the respective optical signals output from the optical splitter, the optical phase modulators adjusting the phases of the optical signals based on a phase modulation characteristic in which the phase change amount changes depending on the wavelength of light, and output the optical signals.
Claims8
An opto-electronic integrated circuit comprising:
- an optical splitter formed on a substrate, the optical splitter branching an input optical signal into N (N is an integer of not less than 2) optical signals, and outputting the optical signals;
- and
- N optical phase modulators formed on the substrate for the respective optical signals output from the optical splitter, the optical phase modulators adjusting phases of the optical signals based on a phase modulation characteristic in which a phase change amount changes depending on a wavelength of light, and outputting the optical signals.
An array antenna transmitter comprising:
- an optical splitter formed on a substrate, the optical splitter branching an input optical signal into N (N is an integer of not less than 2) optical signals, and outputting the optical signals;
- N optical phase modulators formed on the substrate for the respective optical signals output from the optical splitter, the optical phase modulators adjusting phases of the optical signals based on a phase modulation characteristic in which a phase change amount changes depending on a wavelength of light, and outputting the optical signals;
- N photodiodes formed on the substrate for the respective optical phase modulators, the photodiodes outputting electrical signals obtained by OE-converting the optical signals that have been output from the optical phase modulators and have individual phases;
- and
- N antenna devices formed on the substrate for the respective photodiodes, the antenna devices operating as a phased array antenna as a whole by radio-transmitting the electrical signals that have been output from the photodiodes and have individual phases.
2 more elements
An array antenna receiver comprising:
- an optical splitter formed on a substrate, the optical splitter branching an input optical signal into N (N is an integer of not less than 2) optical signals, and outputting the optical signals;
- N optical phase modulators formed on the substrate for the respective optical signals output from the optical splitter, the optical phase modulators adjusting phases of the optical signals based on a phase modulation characteristic in which a phase change amount changes depending on a wavelength of light, and outputting the optical signals;
- N photodiodes formed on the substrate for the respective optical phase modulators, the photodiodes outputting electrical signals obtained by OE-converting the optical signals that have been output from the optical phase modulators and have individual phases;
- N antenna devices formed on the substrate for the respective photodiodes, the antenna devices operating as a phased array antenna as a whole;
- and
- N electrical input/output circuits formed on the substrate for the respective photodiodes, the electrical input/output circuits outputting demodulation signals obtained by demodulating, by the electrical signals that have been output from the photodiodes and have individual phases, received signals radio-received by the antenna devices.
3 more elements
A transmitter comprising:
- an optical splitter formed on a substrate, the optical splitter branching an input optical signal into N (N is an integer of not less than 2) optical signals, and outputting the optical signals;
- N optical phase modulators formed on the substrate for the respective optical signals output from the optical splitter, the optical phase modulators adjusting phases of the optical signals based on a phase modulation characteristic in which a phase change amount changes depending on a wavelength of light, and outputting the optical signals;
- N photodiodes formed on the substrate for the respective optical phase modulators, the photodiodes outputting electrical signals obtained by OE-converting the optical signals that have been output from the optical phase modulators and have individual phases;
- N electrical input/output circuits formed on the substrate for the respective photodiodes, the electrical input/output circuits outputting transmission signals obtained by modulating, by input modulation signals, the electrical signals that have been output from the photodiodes and have individual phases;
- and
- power combining lines formed on the substrate, the power combining lines power-combining and outputting the N transmission signals output from the electrical input/output circuits.
3 more elements
Dependencies are inferred from the claim text.