Method of spooling a bi-metallic pipe
US-10392219-B2 · Aug 27, 2019 · US
Method of manufacturing optical fiber and optical fiber
US10895706B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10895706-B2 |
| Application number | US-201816041058-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 20, 2018 |
| Priority date | Aug 9, 2017 |
| Publication date | Jan 19, 2021 |
| Grant date | Jan 19, 2021 |
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- Title
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Abstract
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A method of manufacturing an optical fiber, in which a coating is provided on a bare optical fiber, includes winding the optical fiber around a bobbin such that a strain relaxation coefficient T ε/K is less than or equal to 292, and an one-layer strain ε n is greater than or equal to 0.01.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of manufacturing an optical fiber in which a coating is provided on a bare optical fiber, the method comprising: winding the optical fiber around a bobbin; and setting a winding tension F [N] such that a strain relaxation coefficient T ε/K defined by the following Expression (2), Expression (3), and Expression (5) is less than or equal to 292, and a one-layer strain ε n defined by the following Expression (7) is greater than or equal to 0.01, K coat = ( E p / t p ) 2 · 10 - 19 H 0 0.25 μ - 0.125 ( E p + t s 3 R s 3 E s ) 1.125 - 0.25 μ ( 2 ) H 0 = π 4 E s ( r s 4 - r p 4 ) ( 3 ) T ɛ / K = 2 Fh ( D + d + 2 × 2 h / 3 ) × d 2 × T w E P × 1 K coat × 10 3 ( 5 ) ɛ n = 2 F (
Assignees
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Classifications
- B65H55/04Primary
characterised by method of winding · CPC title
Optical fibres or optical cables · CPC title
Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers · CPC title
Glass optical fibre with a protective coating, e.g. two layer polymer coating deposited directly on a silica cladding surface during fibre manufacture (G02B6/02052, G02B6/02057, G02B6/024, G02B6/032, G02B6/105, G02B6/14 take precedence; coating on fibre gratings G02B6/02104; multilayer core or cladding G02B6/036; reinforcing splice joints G02B6/2558; optical cables, i.e. comprising protective structures external to the protective coating such as a jacket or plural coated optical fibres G02B6/44; coating of glass to obtain optical fibres C03C25/104) · CPC title
- G02B6/4457Primary
Bobbins; Reels · CPC title
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- What does patent US10895706B2 cover?
- A method of manufacturing an optical fiber, in which a coating is provided on a bare optical fiber, includes winding the optical fiber around a bobbin such that a strain relaxation coefficient T ε/K is less than or equal to 292, and an one-layer strain ε n is greater than or equal to 0.01.
- Who is the assignee on this patent?
- Fujikura Ltd
- What technology area does this patent fall under?
- Primary CPC classification B65H55/04. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 19 2021 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).