Multicore fiber
US-9223083-B2 · Dec 29, 2015 · US
Multicore fiber
US9291768B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9291768-B2 |
| Application number | US-201414549056-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 20, 2014 |
| Priority date | Nov 25, 2013 |
| Publication date | Mar 22, 2016 |
| Grant date | Mar 22, 2016 |
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Abstract
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A multicore fiber according to an aspect of the present invention includes a plurality of cores and a cladding surrounding the plurality of the cores. In this multicore fiber, a pair of cores is arranged and disposed on a linear line passed through the center of the cladding, the pair of the cores being adjacent to each other and having refractive indexes varied differently from the cladding to the cores.
First claim
Opening claim text (preview).
The invention claimed is: 1. A multicore fiber comprising: a plurality of cores; and a cladding surrounding the plurality of cores, wherein a pair of cores is arranged and disposed on a linear line passed through a center of the cladding, the pair of the cores being adjacent to each other and having refractive indexes varied differently from the cladding to the cores, wherein one of the pair of the cores is surrounded by an inner cladding layer having an average refractive index lower than an average refractive index of the one core, the inner cladding layer is surrounded by a trench layer having an average refractive index lower than the average refractive index of the inner cladding layer, and the inner cladding layer and the trench layer are not provided between the other of the pair of the cores and the cladding. 2. The multicore fiber according to claim 1 , wherein the one core and the other core are alternately disposed. 3. The multicore fiber according to claim 1 , wherein the one core is a pair of outer cores located on an outermost side, and the other core is an inner core sandwiched between the pair of the outer cores. 4. The multicore fiber according to claim 3 , wherein a number of the inner core is two or greater, and a distance between center axes of the inner cores adjacent to each other is greater than a distance between center axes of the outer core and the inner core located adjacent to the outer core. 5. A multicore fiber comprising: a plurality of cores; and a cladding surrounding the plurality of cores, wherein a pair of cores is arranged and disposed on a linear line passed through a center of the cladding, the pair of the cores being adjacent to each other and having refractive indexes varied differently from the cladding to the cores, wherein the pair of the cores has almost same mode field diameters, and an average refractive index of one core of the pair of cores is higher than an average refractive index of the other core of the pair of cores, wherein the one core is a pair of outer cores located on an outermost side, and the other core is an inner core sandwiched between the pair of the outer cores, wherein a number of the inner cores is two or greater, and a distance between center axes of the inner cores adjacent to each other is greater than a distance between center axes of the outer core and the inner core located adjacent to the outer core. 6. A multicore fiber comprising: a plurality of cores; and a cladding surrounding the plurality of cores, wherein a pair of cores is arranged and disposed on a linear line passed through a center of the cladding, the pair of the cores being adjacent to each other and having refractive indexes varied differently from the cladding to the cores, wherein the pair of the cores has almost same mode field diameters, and an average refractive index of one core of the pair of cores is higher than an average refractive index of the other core of the pair of cores, wherein the one core is a pair of outer cores located on an outermost side of the cladding, and the other core is an inner core sandwiched between the pair of the outer cores. 7. The multicore fiber according to claim 6 , wherein the one cores is surrounded by an inner cladding layer having an average refractive index lower than an average refractive index of the one core and lower than a refractive index of the cladding, and the inner cladding layer is not provided between the other core and the cladding.
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Classifications
arranged - - · CPC title
- G02B6/02042Primary
Multicore optical fibres · CPC title
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Frequently asked questions
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- What does patent US9291768B2 cover?
- A multicore fiber according to an aspect of the present invention includes a plurality of cores and a cladding surrounding the plurality of the cores. In this multicore fiber, a pair of cores is arranged and disposed on a linear line passed through the center of the cladding, the pair of the cores being adjacent to each other and having refractive indexes varied differently from the cladding to…
- Who is the assignee on this patent?
- Fujikura Ltd
- What technology area does this patent fall under?
- Primary CPC classification G02B6/02042. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 22 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).