Fiber probe fabrication having a tip with concave sidewalls
US5480046A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1994 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | May 20, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01Q60/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A probe device is fabricated from a glass fiber segment by first isotropically etching only a portion of the diameter of only a bottom region thereof. Next, the bottom region is cleaved, to produce a cleaved bottom endface. Then the cleaved endface and a height of the sidewalls of the bottom region that is less than its total height are coated with a protective masking layer. The fiber segment is immersed in an isotropic etching solution, whereby its diameter is reduced. Finally, the masking layer is stripped off, and the bottom region is etched again until the (maximum) diameter of the cleaved endface is reduced to a desired value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.