PLANET EM-MII series_v7.0.pdf - Manual (Page 10)

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1. When shorter distance of single mode fiber cables is used, you might need to insert
an in-line optical attenuator in the link to avoid overloading the receiver: Follow the
I-TUT G652 document to imitate the fiber cable length.
2. The attenuation coefficient that mentioned in the following chapters is for reference
only.
Attenuation coefficient
Wavelength region Typical link value
1260nm-1360nm 0.5 dB/km
1530nm-1565nm 0.4 dB/km