The CIR-3-1550-5.5X35-SM1550-1-1-FA from CSRayzer is a Single Mode Fiber Optic Circulator that operates at a wavelength of 1550 nm. It delivers a power of 500 mW and has a wavelength range of ±30 nm. This fiber optic circulator has an insertion loss of up to 0.8 dB and a return loss above 50 dB. It has a peak isolation of greater than 50 dB and maximum channel cross talk of 55 dB. This fiber optic circulator has 3 ports and maximum polarisation dependent loss (PDL) & polarisation mode dispersion (PMD) of 0.15 dB. It supports FC/APC connectors and Ø 0.9mm loose tube SM bare fiber output. This fiber optic circulator is available in a package that measures Ø5.5 mm x 50 (L) mm.