Opto electrical test measurement system for integrated photonic devices and circuits
US11187613B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2020 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Jun 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical testing circuit on a wafer includes an optical input configured to receive an optical test signal and photodetectors configured to generate corresponding electrical signals in response to optical processing of the optical test signal through the optical testing circuit. The electrical signals are simultaneously sensed by a probe circuit and then processed. In one process, test data from the electrical signals is simultaneously generated at each step of a sweep in wavelength of the optical test signal and output in response to a step change. In another process, the electrical signals are sequentially selected and the sweep in wavelength of the optical test signal is performed for each selected electrical signal to generate the test data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.