If you look into a QSFP28 module, the transmitter is on the left, and the receiver is on the right. Fiber optic standards and the physical hardware simply do not support the electronic switching required to reconfigure optical paths. In optical links, this orientation is called Polarity. In this guide, we will explain why Auto-MDI-X is missing from fiber ports and how to navigate the complexities of fiber polarity. An optical module is a typically hot-pluggable optical transceiver used in high-bandwidth data communications applications. Its primary function is to achieve optoelectronic conversion by converting electrical signals into optical signals and vice versa.
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