Optical module device driven by a single power supply
US7199441B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 11, 2004 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Jun 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/2205
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical integrated circuit having optical devices is fabricated. These optical devices must be biased in the mutually opposite directions. If such an optical integrated circuit is fabricated using a conductive semiconductor substrate as conventionally, it is not possible to drive the devices by a single power supply since the substrate side is shared as a common polarity by the devices. The present invention realizes a structure where both anode and cathode of each device can be isolated electrically by conventional process technology and provides an optical integrated circuit which can be driven by a single power supply.An optical integrated circuit is formed on a semi-insulative or insulative substrate. A high resistivity region which extends at least from the active layer to the substrate and includes part of an optical waveguide between the devices is formed so as to electrically isolate the anode and cathode of each integrated device from the other device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.