Taiwan Semiconductor (TSM) shares surged 90% in a year yet still trade at 28x forward earnings. The company is ramping silicon photonics to mass production, positioning itself as the critical foundry to resolve AI computing's looming copper interconnect bottleneck. Nvidia's Spectrum-X Photonics and Quantum-X networking switches validate optical AI computing as the industry's next leap, with TSMC as the essential production partner.