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C2623M (2/07) 25
OPTICAL POWER BUDGET AND MAXIMUM TRANSMISSION DISTANCE
Model Number Wavelength
(Transmit/Receive)*
Optical
Power
Budget
Maximum
Transmission
Distance
Transmitter
End
Receiver
End Fiber Port A Fiber Port B
Multimode (62.5/125 μm)
FT82041MSTR-1 FR82041MSTR-1 1310/850 nm 850/1310 nm
26 dB
†
2 km (1.2 mi)
‡
FT82041MSCR-1 FR82041MSCR-1 1310/850 nm 850/1310 nm
26 dB
†
2 km (1.2 mi)
‡
Single-Mode (9/125 μm)
FT82041SSTR-1 FR82041SSTR-1 1310/1550 nm 1550/1310 nm 28 dB
46 km (28.6 mi)
§
FT82041SSCR-1 FR82041SSCR-1 1310/1550 nm 1550/1310 nm 28 dB
46 km (28.6 mi)
§
*The FT82041 and FR82041 modules are classified by the FDA as Class 1 laser products. For 850 nm,
the Class 1 laser limit is <0.78 mW. For 1310 nm, the Class 1 laser limit is <15.6 mW. For 1550 nm,
the Class 1 laser limit is <10.0 mW.
†
When using 50/125 μm multimode 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.
NOTES:
• Single-mode FC connector is available upon request. Contact the factory for additional
information.
• For conformal coated models, replace the first letter F in the model number with the letter C.
The conformal coated version of FT82041MSTR-1, for example, is CT82041MSTR-1.
• For models with higher optical power budgets, contact the factory.