1751A 1550 nm DWDM DFB Laser Module
RF Characteristics
DATA SHEET| OCTOBER 25, 2004
Parameter
Symbol
Condition
IF = 60 mA
Min
Typ
Max
Units
Frequency Range1
Return Path
F
5
40
-
-
210
860
MHz
MHz
Forward Path
Frequency Response1
Return Path Version 5-210 MHz
Forward Path Version 40- 860 MHz
RF Return Loss1
-
-
-
IF = 60 mA,
TOP = 25 °C
-
-
16
50
60
40
±0.5
±0.5
-
-
-
-
-
-
-
-
-
dB
dB
dB
dBc
dBc
MHz/
mA
| S11 |
CSO
CTB
FM
-
Composite Second Order
Composite Triple Beat
Adiabatic Chirp
IF = IOP
IF = IOP
IF = 60 mA, T= 25 °C,
100
measured at 500 MHz
Nominal Input Impedance
Z
IN
-
-
25
-
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 IF = IOP, 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 ]
