The 3 Ports C+L 1528~1610nm Polarization Maintaining Optical Circulator is a high-performance, non-reciprocal passive device that routes light sequentially from Port 1 → Port 2 and Port 2 → Port 3 while maintaining the input polarization state. Designed to operate across the C+L wavelength band (1528–1610 nm), it provides low insertion loss, high isolation, and an excellent polarization extinction ratio (PER), ensuring stable and precise optical signal transmission in broadband polarization-sensitive systems.