High-speed Communications for Next-generation In-vehicle Networks

This video about automotive multi-gigabit optical connectivity presents the standardized solution under development by KDPOF to reach a 50 Gb/s bit rate over 40 meters of wiring harness. In the process, we’ll comply with the hardest OEM’s EMC specs, and meeting all automotive requirements in terms of operational temperature, reliability, ageing, mechanical loads, chemical loads, dirtiness and harsh environments in general. And all this with outstanding low power and low cost. Please, follow us to the KDPOF labs and we’ll show you a demo of our multi-gigabit solution: 50 Gb/s optical transmission for automotive.

Together with several industry leaders, KDPOF is working on an optical automotive multi-gigabit system that will fulfill the needs of future connected and automated vehicles. Instead of various port components, the new solution provides a single, complete package. The ecosystem already exists since the system leverages well-proven technologies, such as VCSELs (Vertical-cavity surface-emitting laser), multimode fibers and photodiodes already developed for the data centers industry. The technology will be scalable in order to enable even higher data rates, such as 50 and 100 Gb/s, in the future. Standardization processes are ongoing with IEEE 802.3 Automotive Ethernet and ISO PWI 24581 in progress. The robust and reliable system solution provided by KDPOF and industry leaders thus offers the future-proven path to high speeds.

Reliable, Robust and Cost-efficient System Solution

The proposed Multi-gigabit system supports Energy-Efficient Ethernet (EEE) tailored for automotive applications and wakes up in less than 100 ms. The target BER is better than 10-12 with ambient operating temp from -40ºC up to 105ºC (AEC-Q100 grade 2) in harsh automotive environments. High reliability (15 years operation, less than 10 FIT) and outstanding EMC compliance are also fulfilled. The technology in development is based on advanced digital signal processing, using high-speed DAC and ADC to implement all needed algorithms such as equalization or pre-coding. A new optical automotive IVN communication standard IEEE 802.3cz is currently in the task force phase and is targeting data rates of 2.5, 5, 10, 25, and 50 Gb/s. It is supported by several industry-leading companies. First engineering samples of the new automotive, single-chip, fully integrated Fiber Optic Transceiver package solution for 10 Gb/s will be available from KDPOF in fall 2022.

The key advantages of the optical solution, among others, are superior Electromagnetic Compatibility (EMC) thanks to the inherent galvanic isolation, low weight, and low cost. The optical cables are absolutely reliable and at least as flexible as copper cables in the same bandwidth range. They allow fast, dynamic and tight bending as well as immersion in dark liquids. In addition, optical connectivity guarantees easy engineering for seamless implementation.

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