Largan’s CPO Move and the Expanding Optical Communications Opportunity

Highlights

Largan Precision (大立光, 3008-TW) says its fiber-array product has passed validation by a major global customer, with volume production expected as soon as next year. The announcement has intensified interest in the company’s potential role in co-packaged optics (CPO), even as chairman Lin En-ping (林恩平) expressed skepticism about a Micro LED and multimode-fiber approach proposed by display makers. Analyst Shen Wan-chun (沈萬鈞) argues that optical communications is widely misunderstood and that the opportunity extends well beyond a handful of companies. The central distinction is between pluggable transceivers and optical components integrated close to chips. AI-related bandwidth and heat constraints are driving interest in optical transmission, but multiple technical approaches remain under debate.

Sentiment Analysis

• Overall tone: The source is strongly optimistic about the long-term optical-communications opportunity, presenting AI infrastructure demand as a catalyst for investment and technology development.
• Positive elements: Largan’s reported customer validation and anticipated production ramp are framed as meaningful progress. Shen also describes a potentially broad market and cites a reported 70% shortage at a major US optical-communications company.
• Cautionary elements: The piece stresses that the sector is technically complex and prone to misunderstanding. It distinguishes several product and network categories, warning readers not to treat them as interchangeable.
• Mixed signals: Lin’s criticism of a Micro LED-based CPO proposal contrasts with the bullish market narrative. That disagreement is presented as evidence of competing technical routes, not proof that all optical approaches will succeed or fail.
• Sentiment indicator: Positive, with notable technical and execution-related uncertainty.

Article Text

Largan Precision, a leading optical-lens manufacturer, has drawn attention to its possible expansion into optical communications. At a recent investor conference, chairman Lin En-ping said the company’s fiber array (FA) product had successfully passed validation by a major global customer. The company expects volume production to begin as soon as next year. The announcement has prompted discussion of whether Largan could become a significant supplier in the developing co-packaged optics market.

Market reaction has also been shaped by a report from Goldman Sachs, which raised its target price for Largan to NT$11,000. The source characterizes this as an unusually ambitious valuation and links it to hopes that the company could become a “10,000-dollar stock.” These are analyst expectations rather than confirmed outcomes, and the article’s central question is whether the company’s new product can translate customer validation into sustained commercial production.

At the same conference, Lin was asked about display manufacturers’ efforts to combine Micro LED with multimode fiber as a route into co-packaged optics (CPO). He said he did not believe the approach was likely to succeed and expressed a negative view of it. The remarks affected sentiment toward display companies AUO and Innolux, as well as optical-communications company TrueLight (上詮). The episode illustrates how comments on one technical proposal can influence several related stocks, even when they do not settle the broader question of which CPO designs will ultimately be adopted.

Former institutional investor Shen Wan-chun, appearing on the program “What Investors Want to Know,” described optical communications as an industry that is especially easy to misunderstand. He said that market participants may currently see only part of the opportunity and cited a reported shortage rate of 70% at a major US optical-communications company. In his view, demand associated with AI infrastructure could create opportunities for a range of suppliers rather than being captured by only one or two firms. The shortage figure and the assessment are presented as claims from the source, not as independently verified industry-wide statistics.

One source of confusion is the difference between a transceiver and CPO. A transceiver is generally a pluggable optical component used to connect servers or server racks. CPO, by contrast, places optical components close to a processor or other chip within a package. The two arrangements serve related transmission needs, but they differ in how optical functions are integrated, and their engineering challenges are not equivalent. Treating the terms as interchangeable can therefore blur important distinctions about product design and deployment.

The article also distinguishes different scales of network expansion. Scale out refers to connections between racks, while Scale up concerns expansion within a rack. Scale in describes communication at the most tightly integrated level, between chips. These categories help explain why conversations about optical links can refer to different systems and distances. A solution suitable for one level is not automatically appropriate for another, and the associated components, packaging requirements, and performance trade-offs may vary.

A further driver is the pressure on electrical transmission as AI computing grows. The source argues that copper-based connections face limitations involving signal loss, transmission delay, and heat. Optical transmission is being explored as a way to address these constraints, and the article presents the shift from electrical to optical links as a powerful direction for semiconductor and AI infrastructure. However, the broad movement toward optics does not mean that every proposed technology or supplier will win. Product choices still depend on the application, engineering performance, manufacturing readiness, and customer adoption.

Lin’s skepticism toward the Micro LED proposal therefore does not necessarily contradict the wider interest in optical communications. Different applications can require different technologies, and each approach involves trade-offs. The debate shows that technology companies are seeking ways to improve data movement and manage heat, while the industry continues to evaluate which architectures can meet those needs. The article’s main conclusion is that optical communications is a broad, technically diverse field; investors and readers need to distinguish its segments before drawing conclusions from company announcements or market forecasts.

Key Insights Table