Optical assembly using low DN/DT optical adhesive
US10324260B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2018 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Nov 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3846
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Embodiments of an optical assembly and methods of making it are provided. The optical assembly includes a first waveguide, a second waveguide, and an optical adhesive for transmitting optical signals between the first waveguide and the second waveguide. The 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 the absolute magnitude of |4×10−4/° C.| and the sign of that value is negative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.