13

Transmitter Optical Characteristics

The following characteristics are defined over the Recommended Operating Conditions unless otherwise noted. Typical

values are for Tc = 40°C, Vcc33 = 3.3 V and Vcc25 = 2.5 V.

Parameter

Symbol

Min

Typ

Max

Units

Reference

Output Optical Power: Average

-1.5

dBm

Output Optical Power: Disabled

-30

dBm

Extinction Ratio

ER

3

dB

Informative

Output Optical Modulation Amplitude

OMA

-5.25

dBm

Informative

Output OMA: Squelched

-27

dBm

Encircled Flux

1

Center Wavelength

830

860

nm

Spectral Width - rms

0.85

nm

Output Rise/Fall Time

50

ps

2, Informative

Power On Initialization Time Tx Outputs

500

ms

Figure 18

Reset Assert Time Tx Outputs

500

ms

Figure 19

Reset De-assert Re-initialization Time Tx

Outputs

500

ms

Figure 19

Output Disable Assert Time for Fault

100

ms

Figure 21

Output Squelch Assert Time for LOS

80

µs

Figure 22

Output Squelch De-assert Time for LOS

80

µs

Figure 22

Inter-channel Skew

150

ps

3

Channel Latency

400

ps

Informative

Relative Intensity Noise OMA

-124

dB/Hz

Informative

Accumulated Deterministic Jitter

30

ps

4, Informative

Accumulated Total Jitter

60

ps

5, Informative

Reference Link Output Eye Width

40

ps

6

Notes:

1. The transmitter launch condition meets the requirements of 10 Gigabit Ethernet multimode fiber as detailed in TIA 492AAC.

2. These are unfiltered rise and fall times measured between the 20% and 80% levels using a 500 MHz square wave test pattern. Impairments in

measurements due to the test system are removed.

3. Inter-Channel Skew is defined for the condition of equal amplitude, zero ps skew input signals.

4. Deterministic Jitter, DJ, conforms to the dual-Dirac model where TJ(BER) = DJ + 2Q(BER)RJrms and RJrms is the width of the Gaussian component.

the measurement. All channels not under test are operating with similar test patterns.

operating at 10 GBd with test source characteristics per the Recommended Operation Conditions. Effects of impairments in the test signals due to

the test system are removed from the measurement. All channels not under test are operating with similar test patterns.

6. Eye Opening is defined as the unit interval less TJ for the same test pattern and conditions as TJ. Measurement is made at the output, TP4, of the

Reference Channel. See Link Model and Reference Channel section and Receiver Electrical Characteristics.