Title:
IQ OPTICAL MODULATOR
Document Type and Number:
WIPO Patent Application WO/2018/174083
Kind Code:
A1
Abstract:
To provide a polarization-multiplexed IQ optical modulator capable of high-speed/broad-wavelength-band operation. An IQ-type optical modulator characterized by being provided with: main Mach-Zehnder (MZM) optical waveguides; secondary MZM optical waveguides provided to each of two arms constituting part of each of the main MZM optical waveguides; two electrode lines for phase-modulating an optical signal propagated through the MZM by application of a modulation signal thereto, the electrode lines being provided along each of two arms constituting part of each of the secondary MZM optical waveguides; RF leader lines for inputting the modulation signal applied to the two electrode lines, the RF leader lines being connected to each of the two electrode lines; a first optical demultiplexer for branching light to the two arms of the main MZM optical waveguides; a second optical demultiplexer for branching light to the two arms of each of the secondary MZM optical waveguides; and a first optical multiplexer for multiplexing the light from the two arms of the secondary MZM optical multiplexers; the stripe direction of the RF leader lines, the stripe direction of the second optical demultiplexer, and the stripe direction of the first optical multiplexer being the same as the stripe direction of the secondary MZM optical waveguides to which the two electrode lines are provided, and the stripe direction of the first optical demultiplexer being in an orthogonal relationship.
Inventors:
OGISO YOSHIHIRO (JP)
OZAKI JOSUKE (JP)
UEDA YUTA (JP)
OZAKI JOSUKE (JP)
UEDA YUTA (JP)
Application Number:
PCT/JP2018/011156
Publication Date:
September 27, 2018
Filing Date:
March 20, 2018
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02F1/01; H04B10/516
Domestic Patent References:
| WO2016021163A1 | 2016-02-11 | |||
| WO2014104309A1 | 2014-07-03 |
Foreign References:
| JP2010237629A | 2010-10-21 | |||
| JP2010217427A | 2010-09-30 | |||
| US20130142521A1 | 2013-06-06 | |||
| EP2782270A1 | 2014-09-24 | |||
| US9310663B2 | 2016-04-12 | |||
| JP4235154B2 | 2009-03-11 |
Other References:
SOPHIE LANGE ET AL.: "Low Power InP-Based Monolithic DFB-Laser IQ Modulator With SiGe Differential Driver for 32-GBd QPSK Modulation", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 34, no. 8, 15 April 2016 (2016-04-15), XP011609139, doi:10.1109/JLT.2015.2510228
N. WOLF ET AL.: "Compound Semiconductor Integrated Circuit Symposium (CSICS", 2015, IEEE, article "Electro-Optical Co-Design to Minimize Power Consumption of a 32GBd Optical IQ-Transmitter Using InP MZ-Modulators"
See also references of EP 3605205A4
N. WOLF ET AL.: "Compound Semiconductor Integrated Circuit Symposium (CSICS", 2015, IEEE, article "Electro-Optical Co-Design to Minimize Power Consumption of a 32GBd Optical IQ-Transmitter Using InP MZ-Modulators"
See also references of EP 3605205A4
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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