QSFP optical transceiver market was valued at USD 1,784 million in 2026 and is projected to reach USD 6,109 million by 2036, recording a CAGR of 13.1% during 2027–2036. Asia-Pacific was the largest region in 2026 at an estimated ~42% share. The market centers on four-channel and denser quad-small-form-factor pluggable optical transceiver modules converting electrical signals to optical signals through short-reach multimode and longer-reach single-mode fibre