IQ Offset - Common impairments in coherent transmission systems

Engineers frequently encounter challenges when analyzing the constellation diagrams of coherent test signals. This tutorial goes deep into the concept of IQ Offset, providing insight into a potential underlying cause. Additionally, we will outline the primary factors contributing to these issues, enabling you to fine-tune the measurement setup and get the desired constellation diagrams.

#photonics #coherentoptics #IQOffset #tutorial

0:00 - 0:17 Introduction
0:17 - 1:37 What is IQ Offset?
1:37 - 2:50 The reason behind IQ Offset
2:50 - 4:47 How quadrature error looks like
4:47 - 5:08 Keysight webpage for more information