Traveling-wave optoelectronic wavelength converter
US7174058B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2006 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Jul 19, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/1209
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Traveling-wave optoelectronic wavelength conversion is provided by a monolithic optoelectronic integrated circuit that includes an interconnected traveling-wave photodetector and traveling-wave optical modulator with a widely tunable laser source. Either parallel and series connections between the photodetector and modulator may be used. An input signal modulated onto a first optical wavelength develops a traveling wave voltage on transmission line electrodes of the traveling-wave photodetector, and this voltage is coupled via an interconnecting transmission line of the same characteristic impedance to transmission line electrodes of the traveling-wave optical modulator to modulate the signal onto a second optical wavelength derived from the tunable laser. The traveling wave voltage is terminated in a load resistor having the same characteristic impedance as the photodetector and modulator transmission lines. However, the interconnecting transmission lines and the load resistor may have different impedances than the photodetector and modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.