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C1641M-A (3/05) 21
OPTICAL POWER BUDGET, TRANSMISSION DISTANCE, AND LASER CLASS 1 LIMIT
Fiber Wavelength
Optical
Power
Budget
Maximum
Transmission
Distance
Laser
Class 1
Limit*
Multimode
(62.5/125 µm)
850 nm
15 dB
†
2 km (1.2 mi)
††
<0.78 mW
1310 nm
20 dB
†
6 km (3.7 mi)
††
<15.6 mW
Single-mode
(9/125 µm)
1310 nm 20 dB
30 km (18.6 mi)
§
<15.6 mW
*The FT8301 transmitter/FR8301 receiver is classified by the FDA as a Class 1 laser product.
†
When using 50/125 µm fiber, subtract 3 dB from the optical power budget.
††
Maximum transmission distance is limited by fiber bandwidth.
§
Maximum transmission distance is based on attenuation of 0.5 dB/km plus a 5 dB buffer for
connector and splice losses.