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Products Optical Instruments Optics / Physics Education Kits Opto-mechanics Light Sources Experimental Instruments Photonics Components Diffractive Micro-optics	Photonics » Optical Circulator Polarization independent optical circulators (three ports and four ports) feature an ultra compact metallic package with excellent stability. Specifications Parameter Unit Value Port Number   3 4 Wavelength nm 1310 or 1550 Bandwidth nm 1310 or 1550 ± 20 Transmission Direction   Port 1→2, 2→3 Port 1→2, 2→3, 3→4 Insertion Loss dB P Grade: ≤ 0.7 A Grade: ≤ 0.8 Return Loss dB ≥ 55 Isolation dB ≥ 50 ≥ 45 PDL dB ≤0.1 PMD ps ≤ 0.1 Maximum Optical Power mW 300 Fiber Type   SMF-28 Crosstalk dB ≤ -50 Operation Temperature °C -5 ~+ 70 Storage Temperature °C -40 ~+ 85 Dimension mm Φ5.5 x 63 Ordering Information (NS - CIR) Ports 3: 3 ports 4: 4 ports Wavelength 131:1310 nm 155:1550 nm Grade P:P Grade A:A Grade Cable Diameter 025: Φ250 μm 09: Φ900 μm 30: Φ3mm optical cable Connector 00: no connectors FC/PC FC/APC SC/PC SC/APC LC/PC MU/PC Customer Specify
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