The S,C,C+L band Optical Circulator from Shanghai Fsphotonics Technology are Polarization Insensitive Fiber Optic Circulators that operate at wavelengths of 1310 nm, 1480 nm, 1550 nm, 1585 nm, and 1520 nm - 1620 nm. They deliver an average power of up to 300 mW and have a wavelength tolerance of ±30 nm (1585 nm). These fiber optic circulators have two types: 3 port & 4 port and an insertion loss of less than 0.8 dB - 1.1 (Grade P), 1 dB - 1.2 dB (Grade A) (3 port) & 0.8 dB - 1.2 (Grade P), 1 dB - 1.3 dB (Grade A) (4 port). They have an isolation above 40 dB and 30 dB & 35 dB (overall).

The S,C,C+L band Optical Circulator have a Polarization Dependent Loss (PDL) of up to 0.15 dB (3 port) & 0.2 dB (4 port) and return loss of over 50 dB. They have a Polarization Mode Dispersion (PMD) below 0.1 ps and directivity of greater than 50. These fiber optic circulators support SMF-28e fiber and are available in a compact package that measures 98 (L) mm x 14.5 (W) mm x 8.5 (H) mm (P2), 90 (L) mm x 20 (W) mm x 9.5 (H) mm (P5), and 80 (L) mm x 12 (W) mm x 10 (H) mm (P8). They are ideal for EDFA, DWDM & OTDR, OADM networks, and bi-directional transmission systems applications.