Title:
OPTICAL MODULATOR
Document Type and Number:
Japanese Patent JP2017173385
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress reflection of a common mode at a terminal resistance or at a driver output end, in an optical modulator connected to a differential output open-collector driver.SOLUTION: An optical modulator includes: a differential type open-collector driver; a Mach-Zehnder type light modulator with a pair of RF electrodes that is connected to the differential type open-collector driver; and a terminal resistance connected to the Mach-Zehnder type light modulator. The terminal resistance has: a pair of first resistances connected to the RF electrodes respectively; and a second resistance connected to the first resistance. The pair of first resistances and the second resistance are impedance-matched with the RF electrodes in both a common mode and a differential mode in the Mach-Zehnder type light modulator.SELECTED DRAWING: Figure 9
Inventors:
TAKEDA KOTARO
TSUZUKI TAKESHI
HONDA KENTARO
HASE MUNEHIKO
NAKANO SHINSUKE
TSUZUKI TAKESHI
HONDA KENTARO
HASE MUNEHIKO
NAKANO SHINSUKE
Application Number:
JP2016056213A
Publication Date:
September 28, 2017
Filing Date:
March 18, 2016
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G02F1/025
Domestic Patent References:
| JP2002277840A | 2002-09-25 |
Foreign References:
| US20150110501A1 | 2015-04-23 | |||
| US20160054639A1 | 2016-02-25 |
Other References:
WOLF ET AL.: "Electro-Optical Co-Design to Minimize Power Consumption of a 32 GBd Optical IQ-Transmitter Using InP", COMPOUND SEMICONDUCTOR INTEGRATED CIRCUIT SYMPOSIUM, vol. H.3, JPN6018016069, 11 October 2015 (2015-10-11), US, pages 117, ISSN: 0003790780
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office
Previous Patent: A toner for electrostatic latent image development
Next Patent: Image forming device
Next Patent: Image forming device