Source: KIS MCP Real-Time Quotes · Standard: 2026-03-06
Four days after NVIDIA bet $4 billion on the future of optical communication, Broadcom CEO Hock Tan declared, "Copper is enough." Optical communication stocks plummeted on March 6 — but the Silicon Photonics roadmap to be unveiled at GTC 10 days later tells a completely different story. Is this a technological debate or a market share war?
Broadcom's Hock Tan's statement that "copper is enough" is technically only half true, and strategically a check on competitors. While it is true that copper (DAC) is valid for scale-up (inside the rack) until 2028, the real bottleneck of the AI factory is scale-out (between racks, between data centers) networking, and optical communication is irreplaceable in this area. As NVIDIA has declared Co-Packaged Optics (CPO) a 'structural necessity' in the Rubin/Feynman generation, the structural growth thesis of optical communication is still valid. However, in the short term, profit taking + the psychological impact of Broadcom's remarks are causing adjustments. GTC (3/16~19) is the biggest catalyst and a turning point.
| Analysis Desk | Weight | Direction | Score | Conviction | Basis |
|---|---|---|---|---|---|
| Macro & Rates | 20 | Neutral | +4 | Medium | Continued expansion of AI infrastructure spending, stable interest rates [FACT] |
| Industry / Sector | 15 | Bullish | +10 | High | No alternative to optical interconnect in the scale-out section [FACT] |
| Fundamentals (Quant) | 20 | Bullish | +12 | High | Coherent/Lumentum secured multi-year purchase agreements, revenue visibility [FACT] |
| Technical & Flow | 15 | Bearish | −8 | Medium | Major optical communication stocks adjusted −30~47% from 52-week high [FACT] |
| Business / Product | 20 | Bullish | +12 | High | NVIDIA Rubin/Feynman CPO mandatory roadmap [FACT] |
| News & Catalysts | 10 | Bullish | +2 | Medium | GTC 2026 (3/16~19) CPO announcement expected [NARRATIVE] |
The core of this controversy is whether to maintain the interconnects inside the AI data center with copper wires (Direct Attach Copper) or switch to optical (Optical), which is a choice of technology path. However, this question itself is a false dichotomy. The correct framework is as follows: