We demonstrate an integrated circuit (IC) implemented in 28-nm CMOS technology for Mach-Zehnder modulator (MZM) bias control. Our circuit determines the optimal MZM bias voltage that provides the largest optical modulation amplitude and maintains this bias voltage by monitoring the average modulated power. The controller IC consists of digital-to-analog converter, analog-to-digital converter, trans-impedance amplifier, power detector, track-and-hold circuit, comparator, and digital controller, all of which are integrated in a single chip. With small power consumption and chip area, our approach should be applicable for future photonic electronic integrated circuits based on the Si platform.
Bibliographical noteFunding Information:
Manuscript received July 18, 2017; revised September 26, 2017; accepted October 9, 2017. Date of publication October 12, 2017; date of current version October 30, 2017. This work was supported in part by the National Research Foundation of Korea through the Korean Ministry of Science, ICT and Future Planning under Grant 2015R1A2A2A01007772 and in part by the Materials and Parts Technology Research and Development Program through the Korean Ministry of Trade, Industry and Energy under Project 10065666. (Corresponding author: Woo-Young Choi.) The authors are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea (e-mail: wchoi@ yonsei.ac.kr).
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering