Laser chip definition
Optical chips are the core components that realize the mutual conversion of photoelectric energy carriers. They are widely used in optical interconnect products and are mainly divided into laser chips and photodetector chips. Among them, the laser chip is an active semiconductor component that converts electrical energy into high-power, high-monochromatic light beams based on the principle of stimulated radiation.
At the transmitting end of optical communication systems, laser chips are the key light source that carries information. They are irreplaceable and occupy a central position in the field of optical chips. According to the modulation method, laser chips can be divided into direct modulation, integrated modulation and external modulation. From the perspective of material systems, laser chips are mainly divided into indium phosphide (InP) and gallium arsenide (GaAs). In addition, according to the light-emitting structure, it can be divided into surface-emitting and edge-emitting structures.
Industrial chain distribution of laser chips in the optical interconnection market
Laser chips are at the upstream of the optical interconnection industry chain and are an important link in the entire industry chain with high technical barriers and complex process flows. As the "heart" of the optical communication system, the performance of the laser chip directly determines the transmission rate and energy efficiency of downstream optical devices, optical modules and even the entire optical communication system.
As the core carrier of optical communication systems, optical interconnect products have obvious differences in their hardware cost structure (BOM) depending on the technology path. Taking non-silicon optical optical modules as an example, its hardware cost structure mainly includes four major segments: optical chips, electrical chips, passive optical devices, PCB and mechanical components. For silicon photonic interconnect products, the BOM structure has been structurally reconstructed. The original discrete modulator and a large number of passive optical devices are integrated into a silicon photonic chip (PIC), while the PCB and mechanical components are greatly simplified.
At this time, BOM focuses on the two cores of "silicon photonic chips" and "lasers". Whether using the early-developed EML solution or the emerging silicon optical path, laser chips occupy an important position in the value chain because they directly affect photoelectric signal conversion and signal transmission quality.
Main laser chip product types
As the core device of photoelectric conversion, laser chips are mainly divided into five categories based on differences in material systems, physical structures and modulation methods, including DFB, EML, CW, VCSEL and FP, each with specific technical advantages and application scenarios.
Laser chip market development background
The significant growth of the laser chip industry is mainly due to favorable factors such as the explosive growth of the optical interconnection market, the rapid application of emerging technologies such as silicon photonics in optical interconnections, and the growing demand for high-performance optical interconnection products from end customers. As an indispensable core component of optical interconnect solutions, laser chips directly benefit from these trends, thereby accelerating their own development.
In 2024, the global laser chip market will reach US$2.6 billion and is expected to grow to US$22.9 billion in 2030, with a compound annual growth rate of 44.1%. There are objective limitations in the development of the laser chip industry, including long production capacity expansion cycles, high technical barriers and concentrated high-end production capacity, limited core materials and equipment in the short and medium term, and an unbalanced supply chain pattern. It cannot fully meet the rapidly growing needs of the downstream market. The overall market is in short supply. This is especially obvious in EML laser chips and CW laser chips used for high-speed optical interconnections.
Main application scenarios of laser chips
Laser chips are mainly used in optical interconnect products, and the terminal application scenarios are very similar to the application scenarios of the optical interconnect solutions they support. According to different terminal application scenarios, the laser chip market can be divided into the data center laser chip market and the telecommunications laser chip market. Among them, the data center laser chip market occupies an absolute market position. The market size will reach US$1.6 billion in 2024 and is expected to grow to US$21.1 billion in 2030, with a compound annual growth rate of 53.4%.
The data center laser chip and telecommunications laser chip markets present a differentiated technology landscape. The data center laser chip market is characterized by a two-wheel drive technology landscape of EML and CW laser chips: EML laser chips, as an early development solution, are widely used in 400G and above optical interconnect products. In recent years, silicon photonic solutions with the advantages of high integration and low cost have become a high-speed evolution direction, requiring high-power CW laser chips.
In telecommunications, edge-emitting laser chips continue to dominate, largely due to their ability to meet stringent performance requirements. Specifically, DFB laser chips are widely used in short- and medium-distance scenarios such as 5G fronthaul and optical fiber access. On the contrary, EML laser chips overcome dispersion limitations through their low chirp and high extinction ratio, thus occupying a dominant position in long-distance, high-speed nodes such as backbone networks and high-speed fiber access.
EML laser chips and CW laser chips dominate the market share, and their importance continues to increase
In 2024, the total market size of EML laser chips and CW laser chips will reach US$970 million, accounting for approximately 38.1% of the market. In the future, the revenue of these products is expected to maintain a high growth rate and the market share will continue to increase. By 2030, the total revenue is expected to reach 20.80 billion US dollars, with a compound annual growth rate of 66.6% and a market share of 90.9%.
EML laser chip
EML laser chips mainly include 50G/100G/200G and other specifications according to data rate from low to high, and the core adapts to optical interconnect products from 100G to 1.6T. Currently, 100G EML laser chips are mainstream products and are widely used in mainstream high-speed optical interconnect products such as 400G and 800G optical modules. As 1.6T and higher-speed optical interconnect products are successively put into use, 200G EML laser chips, as the matching laser chip choice, will usher in rapid growth.
CW laser chip
The development of CW laser chips mainly benefits from the application of silicon photonics technology. In silicon photonic solutions, CW laser chips serve as external/heterogeneous integrated light sources and are used in conjunction with silicon photonic modulators to realize the photoelectric signal conversion and modulation functions of silicon photonic interconnect products. Among high-speed optical interconnect products, silicon photonic solutions and CW laser chips are widely used due to their excellent cost-effectiveness advantages.
In the current main silicon photonic high-rate optical interconnect products of 400G, 800G and even 1.6T, the main CW laser chips used include 50mW, 70mW, 100mW and other power models. In addition, driven by emerging technologies such as NPO and CPO, high-power CW laser chips including 150mW, 300mW and 400mW models are gradually being included in the commercial development of next-generation optical interconnect products. From 2025 to 2030, the demand for CW laser chips with power above 100mW is expected to experience explosive growth. By 2030, the market size of CW laser chips with power above 100mW is expected to reach US$6.6 billion, accounting for 65.3% of the market.
Laser chip industry development driving factors and future development trends
. Demand continues to increase and maintain rapid growth. The development of AI training clusters has driven a surge in demand for computing power and high-speed data transmission, driving exponential growth in demand for downstream high-speed optical interconnect products. As the core component of optical interconnect products, the market demand for laser chips is rising rapidly.
. EML laser chip and CW laser chip two-wheel drive. On the one hand, EML laser chips have become an important solution to achieve single-wavelength 100G/200G rates due to their high bandwidth, low dispersion and long-distance transmission advantages, and are widely used in 400G, 800G and even 1.6T high-speed optical modules. On the other hand, facing the emerging silicon photonics technology path, CW laser chips paired with silicon photonic modulators are gradually becoming a key core device supporting the next generation of optical interconnect products and ultra-high-speed data center networks due to their high integration, low-cost potential, and perfect adaptability to cutting-edge architectures such as CPO.
. Products evolve towards higher performance, and the value of unit products continues to increase. As optical interconnect products continue to evolve towards higher speeds, and new integration technologies are explored and applied, higher requirements are placed on the performance of laser chips. Taking EML solutions as an example, high transmission rates usually require high performance and quantity of laser chips per unit optical interconnection product, driving up the value of laser chips per unit optical interconnection product.
In the silicon light solution, although silicon light technology reduces the cost of the modulation part through the CMOS process, in order to drive a higher-speed silicon light engine and effectively compensate for complex on-chip optical path losses, the optical module must be equipped with a higher-power, higher-monochromatic CW laser chip as an external light source. In addition, as the industry evolves to next-generation integration technologies such as NPO and CPO, the demand for laser chips will undergo fundamental changes, and the value of laser chips in the overall hardware cost is expected to further increase.
. Supply chain diversification. The expansion of AI-driven global computing infrastructure has placed significant demands on the scale, stability and timeliness of the supply chain, creating strategic opportunities for high-quality laser chip manufacturers. Crucially, manufacturers with advanced technical capabilities (including epitaxial growth, high-precision grating etching) and advantages in operational efficiency and rapid response capabilities can better meet stringent requirements, join the international core supply chain, build a diverse global supply chain network, and gain considerable international market share. It is particularly noteworthy that more and more laser chip manufacturers are implementing globalization strategies by locating their production bases near downstream optical interconnect manufacturers or end customers, thereby building a more resilient and diversified global supply chain network.
Laser chip cost structure
The cost structure of laser chips is dominated by manufacturing costs, direct labor costs and material costs. Material costs mainly include substrates, gold targets, special gases and chemicals, etc., depending on different products, and usually account for 10% to 20% of the total cost. At present, the substrate materials of laser chips are mainly InP and GaAs. Among them, InP prices have continued to rise in the past few years due to rising material prices and other effects. Due to the relatively simple production process of GaAs, the price has gradually declined with process optimization and technology iteration.
Laser chip competition barriers
.Production know-how. Laser chip production is highly dependent on advanced core processes, such as epitaxial growth, high-precision grating etching and complex design of high-speed modulation. In view of the scarcity of foundries with full-process production capabilities, most laser chip suppliers should operate in the IDM model, which places extremely high requirements on suppliers' absolute control over the entire production process and the ability to accumulate deep industry know-how. In addition, the rapid iteration of downstream optical interconnect products has driven continuous technological innovation at the chip level. Therefore, manufacturers need to have the proprietary technology to quickly promote R&D to mass production, continuously optimize process parameters, and maintain stable and high yields to ensure product reliability.
.Customer trust and cooperation. The optical interconnection market is characterized by an extremely strict and lengthy certification process. The high switching costs caused by leading optical interconnection solutions and cloud service providers set up insurmountable barriers for new entrants. However, for suppliers that successfully enter, these characteristics foster relationships that are highly robust and rarely change. By establishing long-term, trusted partnerships with industry leaders, laser chip manufacturers can deeply integrate into the global supply chain and gain critical early insights as AI and data center architectures continue to evolve.
. Research and development capabilities. The technology of the optical interconnection industry is iterating rapidly, which requires upstream laser chip manufacturers to have forward-looking layout and systematic research and development capabilities. Leading companies usually plan ahead in the research and development of core technologies to continue to meet the needs of downstream product upgrades. Laser chip manufacturers with such systematic and forward-looking R&D capabilities can not only maintain the leading pace of technology iterations, but also form technical barriers that are difficult to replicate in the industry, and continue to lead in product performance and reliability.
. Supply chain management capabilities. The dynamic nature of the optical interconnection market places extremely high demands on supply chain management and operational agility. Manufacturers need to have the ability to flexibly expand production, optimize resource allocation, and meet customers' strict delivery cycles. A mature and robust supply chain system is crucial to resolving risks associated with rapid market iteration and violent order fluctuations. By building a solid supply network and maintaining production capacity stability, laser chip manufacturers can achieve economies of scale, meet stringent delivery requirements, and maintain sustainable cost advantages in a fiercely competitive global market.
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