Dasheng Precision's $1.2 Billion Bet on AI Optical Modules as Source Photonics Accelerates Capacity Expansion
Taylor Wilson
Suzhou DSBJ (大生精工) approved a $1.2 billion investment to expand optical chip and module capacity at Source Photonics — formalizing AI datacenter optical interconnect as its core growth engine, after the unit's profit share surged from 23% to 53% in a single quarter.
Why spend $1.2 billion in one shot?
Source Photonics contributed 22.69% of group profit in full-year 2025. By Q1 2026, that share had surged to 52.92%.
This means → optical communications is no longer a sidecar to the PCB business — it is the group's single largest profit driver.
Existing capacity cannot keep up with downstream orders. This expansion is demand-driven, not speculative.
Funding comes entirely from internal cash; no external financing is involved.
What gives Source Photonics its edge?
It is one of a handful of global suppliers with full IDM vertical integration — chip design, wafer fabrication, packaging, module assembly, and testing all in-house.
The key product is high-end EML optical chips — electroabsorption modulated lasers that generate and modulate an optical signal on a single chip — covering speeds from 2.5G to 200G.
In plain terms = most competitors buy chips and assemble modules. Source Photonics makes both — and in an industry where upstream materials take years to scale, that self-sufficiency is a structural advantage.
How big is the AI optical module market?
LightCounting forecasts the global datacom optical module market will reach $22.8 billion in 2026, growing at a ~20% CAGR through 2030.
The supply bottleneck is indium phosphide (InP) and similar critical materials — long lead times and high barriers mean money alone cannot unlock capacity overnight.
This reflects a fundamental asymmetry: demand is pulled by the AI compute arms race, while supply is gated by physics and process know-how — suppliers with in-house chip capability gain pricing power.
What else is DSBJ building beyond this $1.2 billion?
As of end-March 2026, construction in progress stood at RMB 3.45 billion (~$511 million), up nearly 47% from end-2025.
Budgets include ~RMB 7 billion for high-end AI PCB capacity and ~RMB 1.8 billion for optical module lines.
A Yancheng subsidiary is advancing two parallel projects: a RMB 1 billion high-speed optical module component line (5 million units/year) + a RMB 223 million CPO project — co-packaged optics that integrate optical modules directly into switch-chip packages, a key technology for next-generation AI networks — targeting 4,800 systems/year.
What happened with the share-price crash and the rumors?
On June 1, rumors claimed the Source Photonics acquisition and listing plans had stalled, with issues around the controlling shareholder and customer order delivery. The stock hit its daily limit down.
On June 2, Chairman Yuan Yonggang responded: operations are orderly, and the company will address false information through legal channels.
DSBJ clarified that Source Photonics was consolidated into group accounts in October 2025, with all transaction procedures and payments completed. Overseas direct-investment formalities involving the seller are not closing conditions.
What does this expansion signal for market confidence?
The $1.2 billion resolution came immediately after the limit-down episode — the timing itself is a deliberate signal.
This means → management is trying to counter "deal-in-trouble" fears with a capacity commitment backed by real capital.
Whether the rumor cloud truly lifts depends on execution — order delivery and ramp progress in coming quarters. The money is committed; now the market wants to see output.
Content is for reference only, not financial advice.