Hermetic optical attenuator
US4695125A · kind A · utility
11Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1981 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Feb 11, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4428
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A passive fiber optic device and optical fiber connected to it are packaged in a solid block of a bismuth containing fusible alloy. The alloy exhibits appreciable expansion on solidification, negligible dimensional change after solidification, and a low thermal expansion coefficient. Coupled with its low melting point and glass wetting ability, the alloy is uniquely adapted for forming a hermetic seal with glass. By molding as a solid block, the packaging operation is rendered simple and rapid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.