Title:
OPTICAL TRANSMISSION DEVICE AND OPTICAL COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/074301
Kind Code:
A1
Abstract:
An optical transmission device that comprises a light source, a directional coupler, and a light transmission path that has a transmission path core that is optically coupled to the directional coupler. The light source has: a first light-emitting unit that emits first light that includes at least a basic mode; and a second light-emitting unit that emits second light that includes a higher-order mode that is of a higher order than the basic mode. The directional coupler comprises at least: a first waveguide region that has a first core that is arranged to be optically coupled to the first light-emitting unit and to the transmission path core; and a second waveguide region that has a second core and a third core that are formed at an interval so as to optically couple to each other such that at least one portion of the higher-order mode can be transitioned. One of the second core and the third core is arranged to be optically coupled to the second light-emitting unit but not to the transmission path core, and the other of the second core and the third core is arranged to be optically coupled to the transmission path core but not to the second light-emitting unit.
Inventors:
ORI TEIJIRO (JP)
Application Number:
PCT/JP2017/036821
Publication Date:
April 26, 2018
Filing Date:
October 11, 2017
Export Citation:
Assignee:
FUJIKURA LTD (JP)
International Classes:
H01S5/42; G02B6/02; G02B6/125; G02B6/26; G02B6/42; H01L31/0232; H01S5/0239; H04J14/04
Domestic Patent References:
| WO2013157245A1 | 2013-10-24 |
Foreign References:
| JP2005078027A | 2005-03-24 | |||
| JP2008250110A | 2008-10-16 | |||
| JP2016057447A | 2016-04-21 | |||
| JP2004241422A | 2004-08-26 | |||
| JP2015108698A | 2015-06-11 | |||
| JPS6258737A | 1987-03-14 | |||
| US20140333995A1 | 2014-11-13 | |||
| US20150256256A1 | 2015-09-10 |
Other References:
KIMURA HIDEAKI: "Mode- Division Multiplexing Tests with 1.3u mSMF", PROCEEDINGS OF THE 1998 IEICE GENERAL CONFERENCE, 1998, pages 674
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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