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A.3 SINGLE MODE FIBER OPTICS
Cable - The Single Mode fiber optic link segments should consist of
8.7/125 m duplex single mode fiber optic cabling. Acceptable
cable types must adhere to the following specifications, as set forth
in the FDDI X3T9.5 specification:
Single Mode Fiber
Core Diameter
Cladding Diameter
Cable Attenuation
Cable Length
Max Total Length
Optical Wavelength 1305 nanometers typical
Spectral Width
Optical Risetime
Optical Falltime
Transmitter Output
Receiver Input
Table A-2. Single Mode Fiber Optics
8.7 m +/- 0.5 m
127.0 m maximum
123.0 m minimum
0.5 dB/km typical
40 km (24 miles, station to station)
100 km (62 miles) - Dual Ring
200 km (124 miles) - wrapped
15 nanometers maximum
2 nanoseconds
2 nanoseconds
-14 dBm maximum
-14 dBm maximum, -33 dBm minimum
FDDI MEDIA SPECIFICATIONS
Specification
Page A - 3
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