Modulation doped thyristor and complementary transistor combination for a monolithic optoelectronic integrated circuit
US6479844B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Apr 24, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2821
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A family of high speed transistors and optoelectronic devices is obtained on a monolithic substrate with an epitaxial layer structure comprised of two modulation doped transistor structures, one inverted with respect to the other. The transistor structures are obtained by modification of the Pseudomorphic High Electron Mobility Transistor (PHEMT) structure and are combined in a unique way to create a thyristor structure. The thyristor structure may be used as a digital modulator, a transceiver, an amplifier and a directional coupler. These devices may be realized as either waveguide or vertical cavity devices. The vertical cavity construction enables resonant cavity operation of all device modes. In addition to the multiple optoelectronic properties, the structure also produces inversion channel bipolar devices termed BICFETs having either electrons or holes as the majority carrier and heterostructure FETs with both electron and hole channels. Therefore complementary operation of FET or bipolar circuits is possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.