1751A 1550 nm DWDM DFB Laser Module
DATASHEET | JUNE 2012
FIBER OPTICS
RF Characteristic
Parameter
Frequency Range
Return Path
Forward Path
1
Frequency Response
Return Path Version 5-210 MHz
Forward Path Version 40- 860 MHz
RF Return Loss
1
1
Symbol
F
-
-
| S11 |
CSO
CTB
CNR
FM
Z
IN
Condition
I
F
= 60 mA
I
F
= 60 mA,
T
OP
= 25
C
-
I
F
= I
OP
Note 2, 3, 4 and 5
I
F
= I
OP
Note 2, 3, 4 and 5
I
F
= I
OP
Note 2, 3, 4 and 5
I
F
= 60 mA, T = 25
C,
measured at 500 MHz
-
Min
5
40
-
-
16
50
60
51
40
-
Typ
-
-
±0.5
±0.5
-
-
-
-
-
25
Max
210
860
-
-
-
-
-
-
100
-
Units
MHz
MHz
dB
dB
dB
dBc
dBc
dB
MHz/m
A
dB
Composite Second Order
Composite Triple Beat
Carrier to Noise Ratio
Adiabatic Chirp
Nominal Input Impedance
1. Measured on a 50 resistively matched system.
2. I
OP
is the bias point at which simultaneously the linearity, the min. optical power and the required operating wavelength,
OP
are obtained.
3. 8 channel loading with 10% OMI and 40 km fiber length.
4. Receiver thermal noise 8 pA*Hz
-0.5
, 0.5mA at Ith+40mA, photodiode responsivity ~1.1A/W, noise bandwidth 4.2 MHz
5. Forward band (FB=45-870 MHz): Eight channel CW measurement: channel frequencies set at 553.25, 559.25, 565.25,
571.25, 577.25, 583.25, 589.25, and 595.25 MHz. CTB measured at 553.25, 577.25, and 595.25 MHz. CSO measured at
42 MHz
6. Measured Wavelength = Operating wavelength with a tolerance of + 0.05 nm.
Electrical Schematics
Figure 1. 1751A Laser Schematic
Figure 2. 1751A Circuit Schematic
| REV 2012.06
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
EMCORE [ EMCORE CORPORATION ]
