Title:
IC-INTEGRATED OPTICAL POLARIZATION DIVISION MULTIPLEXING IQ OPTICAL MODULATOR MODULE
Document Type and Number:
WIPO Patent Application WO/2024/038481
Kind Code:
A1
Abstract:
Provided is an IC-integrated optical polarization division multiplexing IQ optical modulator which improves resistance to environment temperature. An IC-integrated optical polarization division multiplexing IQ optical modulator module (500) according to one embodiment of the present disclosure is equipped with: optical polarization division multiplexing IQ optical modulators (200) obtained by layering two IQ optical modulators, for an X polarization channel and for a Y polarization channel, in parallel with one another on a chip, said two IQ optical modulators each being an optical polarization division multiplexing IQ optical modulator (201X, 201Y) which has a nested MZ optical waveguide having an I channel optical modulator which has an I channel optical modulation region and a Q channel optical modulator which has a Q channel optical modulation region; an IC chip (502); eight or more high-frequency signal pads (211XIa, 211XIb, 211XQa, 211XQb, 211YIa, 211YIb, 211YQa, 211YQb) which are connected to a high-frequency wire and are arranged in the extension direction of the I channel optical modulation region and the Q channel optical modulation region in each of the two IQ optical modulators; and two or more thermal compensation pads (511a, 511b) which are connected to the high-frequency wire and are not connected to the eight or more high-frequency signal pads, and are arranged between the high-frequency signal pads and the end surface of the chip in the direction in which the high-frequency signal pads are arranged.
Inventors:
HASHIZUME YASUAKI (JP)
OZAKI JOSUKE (JP)
OGISO YOSHIHIRO (JP)
ISHIKAWA MITSUTERU (JP)
OZAKI JOSUKE (JP)
OGISO YOSHIHIRO (JP)
ISHIKAWA MITSUTERU (JP)
Application Number:
PCT/JP2022/030854
Publication Date:
February 22, 2024
Filing Date:
August 15, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02F1/025
Domestic Patent References:
| WO2021049004A1 | 2021-03-18 |
Foreign References:
| US20120032350A1 | 2012-02-09 | |||
| JP2004534392A | 2004-11-11 | |||
| JP2015045790A | 2015-03-12 | |||
| JP2017181851A | 2017-10-05 | |||
| JP2014170026A | 2014-09-18 |
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
Download PDF:
Previous Patent: ROBOT COOPERATION SYSTEM AND ROBOT COOPERATION METHOD
Next Patent: NETWORK NODE AND SYNCHRONIZATION CONTROL METHOD
Next Patent: NETWORK NODE AND SYNCHRONIZATION CONTROL METHOD