100g optical transceivers market was valued at USD 5,292 million in 2026 and is projected to reach USD 11,056 million by 2036, recording a CAGR of 7.6% during 2027–2036. Asia-Pacific was the largest region in 2026 at an estimated ~42% share. The market centers on 100Gb/s optical transmit and receive assemblies using lasers, photodiodes, clock recovery, multiplexed lanes and removable or packaged optical-electrical interfaces in a variety of MSA form factors.