4

Figure 2. Transmitter Eye Mask

Table 4. Transmitter Optical Specifications

Parameter

Symbol

Min

Typ

Max

Unit

Spectral Center Wavelength

1500

1550

1580

nm

-20dB Spectral Width

-

-

0.5

nm

Side Mode Suppression Ratio

SMSR

30

-

-

dB

Optical Output Power, Average*

-4

-

0

dBm

Extinction Ratio

ER

9

-

-

dB

Rise/Fall Time**

Tr/Tf

-

-

260

ps

Total Jitter (TJ)

TJ

-

-

0.28

UI

Optical Waveform

-

Compliant with IEEE 802.3z eye mask (Refer

to Figure 2)

-

Disable Optical Output Power

-

-

-

-35

dBm

† SMF 9/125

†† 20 % - 80 % edge rate without filter

Table 5. Receiver Optical Specifications

Parameter

Symbol

Min

Typ

Max

Unit

Spectral Center Wavelength

1270

-

1600

nm

Receiver Saturation

Pmax

0

-

.

dBm

Minimum Receiver Sensitivity

Pmin

.

-

-21

dBm

RX_LOS Assert Level

-35

-

.

dBm

RX_LOS De-assert Level

.

-

-24.5

dBm

RX_LOS Hysteresis

0.5

2

.

dB

Return Loss

RL

12

-

.

dB

† Receiver sensitivity is measured at the center of the eye for BER=1x10-12 using PRBS 2^7-1

130

100

80

50

20

0

-20

22

37.5

62.5

78

0

100

Normalized Time (% of Unit Interval)