Optical circulator market stood at USD 737.5 million in 2025 and is forecast to attain USD 1,564.5 million by 2034, a CAGR of 8.7% over 2026–2034. Asia-Pacific accounted for the largest 2025 regional position at an estimated ~39%, supported by component assembly in China, optical transmission projects across Asian telecom networks and a large base of photonic device manufacturing.