Low dn/dT optical adhesives
US10816732B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 2019 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Oct 11, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3846
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Embodiments of an optical adhesive are provided. The optical adhesive includes about 20% to about 60% by volume of first monomers. The first monomers have at least two acrylate or methacrylate groups. The optical adhesive also includes about 40% to about 80% by volume of second monomers. The second monomers have at least one fluorine atom and at least one acrylate or methacrylate group. The optical adhesive has a refractive index of from about 1.40 to about 1.55, and in the temperature range of about 10° C. to about 85° C., the refractive index of the optical adhesive has a thermal drift dn/dT of less than about −4×10−4/° C. Embodiments of a mechanical joint between two optical fiber segments using the optical adhesive and embodiments of a method for joining two optical fiber segments are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.