Abstract
We present recent progress of high-speed Mach-Zehnder modulator technologies for advanced modulation formats. Multi-level quadrature amplitude modulation signal can be synthesized by using parallel Mach-Zehnder modulators. We can generate complicated multi-level optical signals from binary data streams, where binary modulated signals are vectorially summed in optical circuits. Frequency response of each Mach-Zehnder interferometer is also very important to achieve high-speed signals. We can enhance the bandwidth of the response, with thin substrate. 87 Gbaud modulation was demonstrated with a dual-parallel Mach- Zehnder modulator.
| Original language | English |
|---|---|
| Pages (from-to) | 915-921 |
| Number of pages | 7 |
| Journal | IEICE Transactions on Electronics |
| Volume | E92-C |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2009 Jan 1 |
| Externally published | Yes |
Keywords
- Lithium niobate
- Mach-Zehnder interferometer
- Optical modulator
- Quadrature amplitude modulation
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering