Small form factor flame resistant low smoke halogen free fiber optic cable
US9696510B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2016 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Dec 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4436
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fiber optic cable which comprises at least one subassembly. Each subassembly comprises 1 to 12 optical fibers, a plurality of yarn strength members free halogens, and a first jacket free of any halogens and having a thickness of between about 0.254 to about 0.305 mm. The first jacket surrounds and completely encases the 1 to 12 optical fibers and the plurality of yarn strength members to form the subassembly. The first jacket is manufactured from a material which has a limiting oxygen index (LOI) of at least 40 and a shrinkage of the first jacket being no greater than about 3.5%. The fiber optic cable has a crush resistance of at least 35N/cm, allows less than a 0.4 db/km increase of optical attenuation from −20 to 70 C and meets requirements according to each of IEC 60332-3-24 (Flame Spread), IEC 61034-2 (Low smoke), and IEC 60754-1&2 (non-Halogen); and the fiber optic cable has a flexural modulus of about 40,000 psi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.