800G Optical Module: A Data Transmission Photoelectric Conversion Node

With the rise of artificial intelligence, 800G optical modules have become a hot topic in the capital market. The demand for high-speed data transmission and the need for advanced optical communication technologies have attracted significant attention and investment in the optical module industry. As AI applications continue to expand, the importance of optical modules in supporting the infrastructure for AI-driven systems further solidifies their position as a focal point in the capital market. This article will take you on an in-depth look at 800G optical modules.

Understanding Photoelectric Conversion

Photoelectric conversion is the process of converting optical signals into electrical signals and vice versa. In the context of data communication, it involves transforming data into light pulses for transmission through optical fibers and converting received light signals back into electrical signals for processing and utilization. The 800G optical module acts as a bridge between these two domains, enabling the conversion of data between optical and electrical formats.

The 800G optical module excels in high-speed data transmission, supporting data rates of up to 800 Gigabits per second (Gbps). It incorporates advanced optical components, such as lasers and photodetectors, to generate and detect optical signals. These components are designed to operate efficiently at high speeds, ensuring accurate and reliable data transmission. Within the module, the electrical signals carrying data are converted into optical signals using lasers. These lasers emit light pulses that carry the encoded data. The optical signals are then transmitted through optical fibers, which act as the medium for data transmission. Upon reaching the destination, the optical signals are received by the photodetectors within the module. The photodetectors convert the light signals back into electrical signals, which can be further processed and utilized by the receiving devices.

Composition of 800G Optical Module

An optical module is composed of several key components, each playing a crucial role in its functionality. These components work together to enable the transmission and reception of optical signals. Here is an overview of the key components of an 800G optical module:

• 1. Transmitter Optical Subassembly (TOSA): The TOSA includes a laser diode or LED that generates the optical signal for transmission. It also incorporates collimating optics to ensure the efficient coupling of the optical signal into the fiber.

• 2. Receiver Optical Subassembly (ROSA): The ROSA comprises a photodiode or APD that detects the incoming optical signal and converts it into an electrical signal. It may also include amplification and filtering components to improve the receiver sensitivity and signal quality.

• 3. Optical Interface: The optical module features an optical interface, such as a fiber optic connector or pigtail, for connecting the module to optical fiber.

• 4. Electrical Interface: The electrical interface provides the connection between the optical module and the electronic components of the communication system. It typically includes a printed circuit board (PCB), connectors, and electronic components for signal conditioning and amplification.

• 5. Control and Monitoring Circuitry: Optical modules often incorporate control and monitoring circuitry to enable the management and adjustment of various parameters, such as optical power, temperature, and diagnostics. This allows for optimal performance and troubleshooting of the module.

The specific structure and configuration of an optical module may vary depending on its intended application, form factor, and performance requirements. However, the general composition outlined above provides a fundamental understanding of the key components involved in an optical module's structure.

800G Optical Module Cost Composition

The cost of an optical module consists mainly of optical components, circuit chips, PCBs, and structural parts. Optical devices account for over 70% of the total cost, with laser-based transmitting devices representing almost half of the optical device cost and detector-based receiving components accounting for 32%, and the remaining 20% of the value includes various types of component costs and packaging costs. The global optical module market size is expected to exceed USD 15 billion by 2024.

Optical Module Industry Development Trends Toward 800G

As optoelectronic devices advance and integrate, optical modules offer higher transmission rates and smaller sizes to adapt to various usage scenarios. Packaging methods continue to evolve, resulting in smaller form factors and lower power consumption, enabling higher port density on switches. Following are the optical module industry trends toward 800G.

• High Speed: The exponential growth of data traffic and the need for higher bandwidth necessitates the development of optical modules capable of supporting ultra-fast data transmission. The industry is actively working towards pushing the boundaries of speed, enabling 800G optical modules to deliver seamless and high-speed data transfer for bandwidth-intensive tasks.

• Low Cost: Manufacturers are continuously optimizing production processes, streamlining supply chains, and exploring cost-effective materials and components to bring down the overall cost of these advanced modules. This cost optimization allows for the wider adoption of 800G technology across different sectors and applications.

• Low Power Consumption: As data centers and network infrastructure expand, energy efficiency becomes increasingly important to minimize operational costs and reduce environmental impact. Efforts are being made to design and engineer 800G optical modules with low power requirements, utilizing advanced technologies and innovative circuit designs to maximize energy efficiency without compromising performance.

Data Center Structure Upgrading – Rising the Volume of 800G Optical Modules

The upgrading of data center infrastructure is a driving force behind the increasing demand and prices of optical modules. Data center optical modules are undergoing constant upgrades and are progressing toward 800G speeds. The exponential growth of data traffic has been a major catalyst for the continuous evolution of data center architecture. Currently, data center optical modules are swiftly transitioning to 400G/800G speeds, with 800G serving as the cutting-edge standard for high-speed Ethernet client interfaces.

As the widespread deployment of 400G optical modules looms closer and the need for higher network bandwidth and performance intensifies, data centers will soon achieve 800G interconnections. This demand will be particularly prevalent in ultra-large-scale data centers, cloud computing facilities, and artificial intelligence computing power centers in the foreseeable future.

Summary

All in all, the 800G optical module represents a significant advancement in data transmission technology. Serving as a crucial photoelectric conversion node, it enables high-speed data transmission, robust performance, and efficient power usage. With ongoing technological innovations and a promising future, the 800G optical module is set to revolutionize data communication networks, driving the growth of high-bandwidth applications and facilitating the digital transformation of various industries.