Optische Kommunikation

The Optical Communication theme spans technologies and equipment that transmit information via light across fiber and photonic links. Core tracks include optical transceivers, coherent modules, WDM/ROADM systems, datacenter interconnects, silicon photonics, lasers/amplifiers, and 5G/AI-driven network upgrades.The sector's total market cap is 2563.80 billion USD, with a 24h change of -1.75%. Among 21 constituents, 1 are up (4.76%) and 20 are down (95.24%). The top gainer is POET Technologies Inc. Common Shares (POET), with a 24h increase of +0.29%.Broad risk-off with weak breadth and no leadership. Near term, avoid chasing; medium term, add quality cash‑generative leaders on pullbacks after earnings and clearer rate guidance.