Data Sheet

2

Characteristics

Parameter

Conditions

Min

Typ

Max

Unit

Module and Modulator Parameters

Case temperature

[Tcase]

External temperature of Tx case

[1]

-5

75

°C

Modulated output power

EOL over temperature

[2] [3]

34

5dBm

Modulated output power -

-0.5

0.5

dB

short term tracking

AC extinction ratio

EOL, 10.709Gb/s

[4]

10

11.5

dB

Dispersion penalty over temperature

10.709Gb/s, 1600ps/nm, EOL

[5]

2dB

Data bar arm bias

<9mA arm bias current

-4

-1.1

V

Data arm bias

<9mA arm bias current

-2.2

-0.5

V

Modulation drive voltage

per arm, pk-pk, 10.709Gb/s

[6]

1.8

2.7

V

Optical rise time, fall time

20% - 80%

35

ps

Tolerable link optical reflection

[7]

-14

dB

Output optical return loss

[8]

20

dB

Optical crossing level [Mode 1]

[9]

48

50

52

%

Optical crossing level [Mode 2]

[10]

40

60

%

Modulator bandwidth

S21, -3dB

10

GHz

Using the LMC10NEJ

The LMC10NEJ can be used in two ways:

Mode 1.

Dynamic MZ modulator arm DC bias control, the Power Tap and VOA can be used in a control loop to stabilise short term power

variation. The optical crossing point is tightly controlled.

Mode 2.

Fixed MZ modulator arm DC bias, the Power Tap and VOA can be used in a control loop to stabilise short term power variation.

Further details relating to modes 1 and 2 are given later in this data sheet.