1751A 1550 nm DWDM DFB Laser Module
DATA SHEET| OCTOBER 25, 2004
RF Characteristics
Parameter
1
Frequency Range
Return Path
Forward Path
1
Frequency Response
Return Path Version 5-210 MHz
Forward Path Version 40- 860 MHz
1
RF Return Loss
Composite Second Order
Composite Triple Beat
Adiabatic Chirp
Nominal Input Impedance
Symbol
F
Condition
I
F
= 60 mA
Min
5
40
-
-
-
| S11 |
CSO
CTB
FM
Z
IN
I
F
= 60 mA,
T
OP
= 25
°C
-
I
F
= I
OP
I
F
= I
OP
I
F
= 60 mA, T = 25
°C,
measured at 500 MHz
-
-
-
16
50
60
40
-
Typ
-
-
±0.5
±0.5
-
-
-
-
25
Max
210
860
-
-
-
-
-
100
-
Units
MHz
MHz
dB
dB
dB
dBc
dBc
MHz/
mA
dB
1. Tested in a 50 Ohm resistively matched system.
2. Eight channel loading with 10% OMI and 40 km fiber.
3. Measured at 42 MHz.
4. Measured at 553.25 MHz, 577.25 MHz, and 595.25 MHz.
All parameters at Beginning of Life (BOL) and I
F
= I
OP
, unless noted otherwise.
In order to prevent reflection-induced distortion, the laser must be connected to an optical cable having a return loss of at least 55 dB for discrete
reflections and 30 dB for distributed reflections.
Electrical Schematics
Figure 1. 1754W Laser Schematic
Figure 1. 1751A Laser Schematic
Figure 2. 1751A Circuit Schematic
ORTEL, A division of EMCORE
3
EMCORE [ EMCORE CORPORATION ]
