Title:
OPTICAL MODULATOR
Document Type and Number:
WIPO Patent Application WO/2019/220971
Kind Code:
A1
Abstract:
The present invention suppresses reflection between a Mach-Zehnder modulator and a terminating resistor. This optical modulator comprises a differential-drive open-collector driver IC2, a differential-drive semiconductor Mach-Zehnder modulator 1, and a differential terminator 3. The Mach-Zehnder modulator 1 comprises waveguides 11, 12 and a differential high-frequency line 14. The differential terminator 3 comprises a differential high-frequency line 29 and terminating resistors 35, 36. The differential high-frequency line 29 is made to have capacitance between signal lines and/or between the signal lines and ground lines.
Inventors:
OZAKI JOSUKE (JP)
KANAZAWA SHIGERU (JP)
TANOBE HIROMASA (JP)
KANAZAWA SHIGERU (JP)
TANOBE HIROMASA (JP)
Application Number:
PCT/JP2019/018375
Publication Date:
November 21, 2019
Filing Date:
May 08, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02F1/015; G02F1/025
Domestic Patent References:
| WO2017208526A1 | 2017-12-07 |
Foreign References:
| JP2017173365A | 2017-09-28 | |||
| JP2011209456A | 2011-10-20 | |||
| JP2016126054A | 2016-07-11 | |||
| JP2014199302A | 2014-10-23 | |||
| JP2012078759A | 2012-04-19 | |||
| JP2014164243A | 2014-09-08 | |||
| US20080095542A1 | 2008-04-24 | |||
| JP2007225904A | 2007-09-06 |
Attorney, Agent or Firm:
YAMAKAWA, Shigeki et al. (JP)
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