10

Table 7. Receiver Optical Characteristics

Parameter

Symbol

Minimum

Typical

Maximum

Unit

Notes

Input Optical Power

-3

dBm

Receiver Sensitivity

-20

dBm

1, 2

Stressed Receiver Sensitivity

(Optical Average Input Power) 1.25Gbps

-14.4

dBm

8

Receiver Electrical 3 dB

Upper Cutoff Frequency

1500

MHz

Operating Center Wavelength

1270

1355

nm

Return Loss (minimum)

12

dB

9

Loss of Signal - Assert

-30

dBm

3

Loss of Signal - De-Assert

-20

dBm

3

Loss of Signal - Hysteresis

0.5

dB

Notes:

2. An average power of -20 dBm with an Extinction Ratio of 9 dB is approximately equivalent to an OMA of 15 μW.

3. These average power values are specified with an Extinction Ratio of 9 dB. The loss-of-signal circuitry responds to valid 8B/10B-encoded peak

to peak input optical power, not average power.