Optical fiber and method for producing optical fiber
US10451796B2 · kind B2 · utility
0Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2017 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Aug 2, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2203/23
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is an optical fiber in which a primary coating layer and a secondary coating layer are formed on an outer circumference of a bare optical fiber including a core and a cladding. A Young's modulus of the primary coating layer is 0.1 to 1.0 MPa, a relationship between lateral rigidity D and flexural rigidity H of the optical fiber as expressed by formulas below satisfies D/H2≤3×1017 N−1 m−6, the primary coating layer contains 0.3 to 2.0 wt % of a photoinitiator including phosphorus, and the primary coating layer contains polypropylene glycol having a weight-average molecular weight of 1000 to 5000. The formulas include
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.