Table 1 specifies
the input interface requirements.
Table 1. Single Mode input interface characteristic
| Parameter |
Unit |
100-SM-LC-L (1.0625 Gbps) |
200-SM-LC-L (2.125 Gbps) |
400-SM-LC-L (4.250 Gbps) |
400-SM-LC-M (4.250 Gbps) |
800-SM-LC-L (4.250 Gbps) |
800-SM-LC-L (8.500 Gbps) |
1600_SM-LC-L (14.025 Gbps) |
3200-SM-LC-L (28.05 Gbps) |
| Saturation level (Pavg received), maximum1 |
dBM |
-3 |
-3 |
-1 |
-1 |
-0.5 |
+0.5 |
+2.0 |
+2.0 |
| Optical Modulation Amplitude (OMA) (sensitivity), minimum 3 |
mW |
0.015 |
0.015 |
0.029 |
0.029 |
0.042 |
0.042 |
0.089 |
0.072 |
| Return loss, minimum 2 |
dB |
12 |
12 |
12 |
12 |
12 |
12 |
12 |
26 |
Notes:
- Based on any valid 8B/10B code pattern measured at, or extrapolated to, 10-12 BER.
Must meet this specification with worst-case conditions as specified in Table 1 for the output interface and Table 1 for the fiber optic link.
- This measurement is made using a 4-meter single mode duplex jumper cable and includes only the
power in the fundamental mode of the single mode fiber.
- FC-PI specifies receiver Optical Modulation Amplitude (OMA) instead of sensitivity and
Extinction Ratio (ER). Receiver sensitivity is the minimum optical average power (Pavg) required,
which can be derived from the equation Pavg = OMA ((ER+1)/2*(ER-1)). The specified OMA at 1.0625
Gbps is equivalent to an average power of -17 dBm at ER=9dB.
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