"Wavelength-controllable voltage-phase photodiode optoelectronic switch (""opsistor"")"
US5837995A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Nov 25, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/772
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A wavelength-portion controllable optoelectronic switch ("Opsistor") capable of rapid switch frequencies fabricated as a monolithic integrated circuit is disclosed. The Opsistor is comprised of two inverse parallel photodiodes in close proximity, preferably on a monolithic silicon substrate, such that the anode of one photodiode is electrically connected via a first conductor to the cathode of the second photodiode, and the cathode of the first photodiode is electrically connected via a second conductor to the anode of the second photodiode. The voltage-phase of the Opsistor is determined by the relative illumination to the Opsistor's two photodiodes and is rapidly switchable. As a receiving device for data signals, the Opsistor receives programming signals from a transmitter light source. By using different wavelength-portion bandwidth pass filters on each of the two Opsistor photodiodes, a OPS-F device is created, and by using a two-wavelength transmitter light source designated as TM2, a TM2/OPS-F system is created capable of high data transmission rates, and high resistance to signal noise. Applications suitable for the Opsistor and TM2/OPS-F system include high speed optocoupl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.