Title:
IQ OPTICAL MODULATOR
Document Type and Number:
WIPO Patent Application WO/2022/097289
Kind Code:
A1
Abstract:
The present invention provides an IQ optical modulator capable of suppressing the deterioration of high frequency characteristic, improving resistance to temperature fluctuation and temperature distribution, and achieving reductions in size and power consumption. An embodiment relates to an IQ optical modulator (300) having a first optical modulator (301I) for an I channel and a second optical modulator (301Q) for a Q channel, and provided with: a first optical demultiplexer (304) that is connected to an input optical waveguide (302) formed from one side of a semiconductor chip, is provided between the first and second optical modulators, and demultiplexes input light into the first and second optical modulators; a first optical multiplexer (305) that multiplexes output light from the first and second optical modulators, and outputs the multiplexed output light from the one side of the semiconductor chip; and first and second phase regulators (306I, 306Q) that are inserted between the output of the first optical modulator and the first optical multiplexer. In each of the phase regulators, an optical waveguide from the first optical demultiplexer to the first or the second optical modulator and an optical waveguide from the first or the second optical modulator to the first optical multiplexer are disposed in the lower part of the same electrode.
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Inventors:
HASHIZUME YASUAKI (JP)
OGISO YOSHIHIRO (JP)
OZAKI JOSUKE (JP)
ISHIKAWA MITSUTERU (JP)
OGISO YOSHIHIRO (JP)
OZAKI JOSUKE (JP)
ISHIKAWA MITSUTERU (JP)
Application Number:
PCT/JP2020/041612
Publication Date:
May 12, 2022
Filing Date:
November 06, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02F1/01
Domestic Patent References:
| WO2018174083A1 | 2018-09-27 |
Foreign References:
| JP2019152732A | 2019-09-12 | |||
| JP2018534627A | 2018-11-22 | |||
| US20180267340A1 | 2018-09-20 |
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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