When ChatGPT responds in seconds, cloud computing supports billions of users, and 5G-A transmits massive data, a "faster, more cost-effective, and denser" communication device is needed - it is the CPO optical module.
The full name of CPO is Co packaged Optics, which simply means that "optical modules" and "switch chips" are directly "packaged" in the same package, breaking the traditional separation architecture of new devices. The core innovation of CPO is "zero distance docking": electrical signals are directly transmitted to the optical engine (the core of the optical module) inside the switch chip, complete the photoelectric conversion, and then output through optical fibers.
Compared to traditional optical modules, CPO has obvious advantages and prominent core values, such as "reducing power consumption, increasing density, reducing latency, and lowering costs", which is the "optimal solution" for ultra high speed communication:

CPO can achieve "light speed transmission" thanks to the collaborative work of these four key components:
Switch chip: a "brain" level component responsible for processing and forwarding electrical signals, and is the core of computing power;
Light engine: "Optoelectronic conversion core", equivalent to a "signal converter", including laser (electrical to optical), detector (optical to electrical), modulator, etc., directly connected to the switch chip;
• Packaging substrate: a "carrier platform" that not only fixes the chip and optical engine, but also provides power, control signals, and is responsible for heat dissipation;
Fiber optic array: "signal outlet", which aggregates the multi-channel optical signals of the optical engine into fiber bundles and connects them to external fiber optic networks.
Among them, silicon photonics chips are optional but crucial "bonus points" - they can integrate optical components such as lasers and modulators on one chip, further improving integration and reducing costs.
Current application areas of CPO:
1. Ultra large data centers: Cloud computing centers and AI computing power clusters both require ultra-high speed transmission of 800G/1.6T or more. The use of CPO can significantly reduce energy consumption and save data center space.
2. AI server interconnection: AI chips need to transmit massive training data in real-time, with a single link bandwidth of over 800G. The low latency and high bandwidth characteristics of CPO can double the training speed of AI and shorten the training cycle from a few days to a few hours.
3. Next generation telecommunications backbone network: The ultra-high speed characteristics of CPO can support the bandwidth requirements of future 5G-A and 6G communication networks.   

ZONGLEN's Temperature Forcing Systems have demonstrated significant technological advantages in CPO optical module testing, with core performance parameters highly matching the extreme testing requirements of CPO modules. Its wide temperature range of -90 ℃ to+225 ℃ far exceeds industry standards and can simulate the possibility of CPO modules facing local high temperatures in data centers (such as chip hotspot temperatures exceeding 100 ℃), while its optical engine is sensitive to low temperatures and needs to be verified for reliability when stored below -40 ℃. -The rapid temperature change rate from 55 ℃ to+125 ℃ for about 10 seconds can simulate the thermal stress of CPO modules during cold start or emergency cooling in data centers, verifying the reliability of photoelectric conversion points. The temperature control accuracy is ± 1 ℃, the display accuracy is ± 0.1 ℃, and the temperature uniformity ensures the coupling loss of the CPO module, avoiding misjudgment caused by local overheating/undercooling.
The CPO optical module is a cross-border integration of optical communication and chip packaging technology, which solves the power consumption, density, and latency bottlenecks of traditional architectures at high rates. It is the "underlying core device" that supports the development of AI, cloud computing, and 5G-A/6G. In the future, when we enjoy faster networks and smarter AI services, there must be the "light speed support" of CPO behind it, which is quietly defining the future of next-generation communication.

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