Modulation system and method for generating a return-to-zero (RZ) optical data signal
US8325410B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 2010 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Aug 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/5055
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A modulation system and a method for generating a return-to-zero (RZ) optical data signal are provided. The modulation system comprises a Mach-Zehnder (MZ) modulator and a drive circuit, which includes a logic XOR gate and a differential amplifier. The logic XOR gate applies a logic XOR operation to a non-return-to-zero (NRZ) electrical data signal and an inverse of an electrical clock signal to generate an electrical intermediate signal. The differential amplifier differentially amplifies the electrical intermediate signal and an inverse of the NRZ electrical data signal to generate an RZ electrical drive signal. The drive circuit drives the MZ modulator with the RZ electrical drive signal to generate the RZ optical data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.