Optical fiber interface for integrated circuit test system
US6249621A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1997 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Apr 23, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2589
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A bi-directional interface for transmitting signals between a circuit tester and a connection point proximate to a circuit to be tested includes a first and a second optical fiber link, a first directional gate for coupling both the input end of the first link and the output end of the second link to one endpoint of the interface and a second directional gate for coupling both the input end of the second link and the output end of the first link to the other endpoint of the interface. An optical fiber link for transmitting a signal between a circuit tester and a connection point proximate to a circuit to be tested includes an optical fiber for transmitting the signal, a light source electrically coupled to the link input and optically coupled to the input of the fiber, and a photodetector optically coupled to the fiber output and electrically coupled to the link output. The light source may include a light emitter and a driver stage electrically coupled to the light emitter. The link input may include a load adapter or a programmable load to receive the signal for the driver stage. For processing the output of the photodetector the link may have a receiver stage, followed by an equ…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.