Transmitter Solutions
Automatic Bias Control
The Automatic Bias Control (ABC) is an in-house developed instrument designed to automatically set and maintain the optimal operating point for Mach-Zehnder modulators (MZM) with a single click, ensuring consistent performance over time and under changing conditions.
The ABC supports a full range of Mach-Zehnder modulators, from single- and dual-polarization intensity modulators to polarization-multiplexed IQ modulators. Additionally, it supports a large range of materials, including Lithium Niobate (LiNbO3) and Silicon Photonics (SiPh) base materials. A simple software reconfiguration allows to switch between different configurations, using the same hardware. This keeps your investment secure against future upgrades or changes in your setup.
For IQ modulators, the ABC precisely tracks the optimal operating point, even with varied RF input signals like QPSK, QAM-xx, or Nyquist-shaped signals, eliminating the need for manual adjustments. The ABC also compensates for quadrature error, a key performance parameter. This ensures stable operation, especially when switching between modulation formats.
With this unique feature set, the ABC is the most capable bias controller available today.
Key features
- Modulation format and RF amplitude independent
- Software configurable support of single & dual-polarization IQ, intensity Mach-Zehnder modulators and more
- Zero-noise feature allows for optimal and repeatable performance
- Plug-and-play solution for OIF standard IQ modulators
- No external tap photodiode required
- Can be operated at any wavelength range
Supported Mach-Zehnder and Feedback Configuration
A single universal unit supports all setups shown below. Switching between setups is accomplished with a single click in the installation-free, web-based graphical user interface (GUI) or via SCPI-style remote commands.
Block Diagram
Application example
Web GUI screenshot
The integrated web server allows users to access and control the unit using any compatible web browser on any device without installing additional software.
All configurations can be set with a single click.
