Single Mode output interface

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Table 1 defines the serial optical signal at the single mode duplex receptacle when coupled into a single mode duplex jumper cable. The parameters specified in this section are based on the requirement that the bit-error rate does not exceed 10-12, including operation at the minimum interface power level.
Table 1. Single Mode output interface optical signal
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 (8.500 Gbps) 1600-M5-SN-I (8.500 Gbps) 3200-M5-SN-I (28.05 Gbps)
Distance, maximum km 10 10 10 4 10 10 10
Average power, maximum 1 dBm         .5 2 2
Average power, minimum 2 dBm -9.5 -11.7 -8.4 -11.2 -8.4 -5.0 -5.0
Center wavelength, minimum 5 nm         1260 1260 1295
Center wavelength, maximum 5 nm         1360 1360 1325
RMS spectral width, maximum 5 nm              
Rise/Fall Time (20-80%), maximum 3 ps 320 160 90 90      
Optical Modulation Amplitude (OMA), maximum 5 mW              
Relative intensity noise (RIN 12) 4 dB/Hz -116 -117 -118 -120 -128 -128 -130
Notes:
  1. Lesser of class 1 laser safety limits (CDRH and EN 60825) or receiver power, maximum.
  2. Based on any valid 8B/10B code pattern. The length of jumper cable between the output interface and the instrumentation is 2 meters (6.56 feet).
  3. Optical rise and fall time specifications are based on the unfiltered waveforms. For the purpose of standardizing the measurement method, measured waveforms shall conform to the mask as defined in Figure 1. If a filter is needed to conform to the mask, the filter response effect should be removed from the measured rise and fall times using the equation: TRISE/FALL = [(TRISE/FALL_MEASURED)2 – (TRISE/FALL_FILTER)2]1/2

    The optical signal may have different rise and fall times. Any filter should have an impulse response equivalent to a fourth order Bessel-Thomson Filter.

  4. See Test methods.
  5. Spectral width may be increased based on center wavelength and distance trade-offs. Link budget analysis is required for any such change. Trade-offs are available between spectral width, central wavelength, and minimum Optical Modulation Amplitude (OMA). See Spectral width and center wavelength examples.