Title:
MULTI-CORE FIBER
Document Type and Number:
WIPO Patent Application WO/2018/168170
Kind Code:
A1
Abstract:
This multi-core fiber is provided with a plurality of core elements and an outer clad surrounding the plurality of core elements. The plurality of core elements each have: a core having a refractive index higher than that of the outer clad; and a low refractive index part surrounding the core and having a refractive index lower than that of the outer clad, wherein an inner radius r2 of the low refractive index part is equal to or greater than an outer radius r1 of the core, and the core elements include two or more core elements having different effective refractive indices. In the two or more core elements, r2/r1 of a first core element having the highest effective refractive index is greater than r2/r1 of a second core having the lowest effective refractive index.
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Inventors:
SASAKI YUSUKE (JP)
Application Number:
PCT/JP2018/000167
Publication Date:
September 20, 2018
Filing Date:
January 09, 2018
Export Citation:
Assignee:
FUJIKURA LTD (JP)
International Classes:
G02B6/02; G02B6/036
Domestic Patent References:
| WO2016129650A1 | 2016-08-18 | |||
| WO2015133407A1 | 2015-09-11 |
Foreign References:
| JP2013167861A | 2013-08-29 | |||
| JP2011170336A | 2011-09-01 | |||
| US20150160408A1 | 2015-06-11 |
Other References:
GARCIA, SERGI ET AL.: "Crosstalk-optimised multicore fiber true time delay lines", MICROWAVE PHOTONICS, 2015 INTERNATIONAL TOPICAL MEETING ON, 26 October 2015 (2015-10-26), pages 1 - 4, XP032833084, DOI: doi:10.1109/MWP.2015.7356667
CHANG ET AL.: "Heterogeneous 12-Core 4-LP-Mode Fiber Based on Trench-Assisted Graded-Index Profile", IEEE PHOTONICS JOURNAL, vol. 9, no. 2, 7 March 2017 (2017-03-07), pages 1 - 11, XP011644094
TU ET AL.: "Optimized Design Method for Bend-Insensitive Heterogeneous Trench-Assisted Multi-Core Fiber With Ultra-Low Crosstalk and High Core Density", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 31, no. 15, 1 August 2013 (2013-08-01), pages 2590 - 2598, XP011518767, DOI: doi:10.1109/JLT.2013.2271514
CHANG ET AL.: "Heterogeneous 12-Core 4-LP-Mode Fiber Based on Trench-Assisted Graded-Index Profile", IEEE PHOTONICS JOURNAL, vol. 9, no. 2, 7 March 2017 (2017-03-07), pages 1 - 11, XP011644094
TU ET AL.: "Optimized Design Method for Bend-Insensitive Heterogeneous Trench-Assisted Multi-Core Fiber With Ultra-Low Crosstalk and High Core Density", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 31, no. 15, 1 August 2013 (2013-08-01), pages 2590 - 2598, XP011518767, DOI: doi:10.1109/JLT.2013.2271514
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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