1688 1310 nm DFB Laser Module
DATASHEET | FEBRUARY 2012
FIBER OPTICS
RF Characteristic
Laser Temperature (T
L
) = 25
o
C, I
F
= I
OP
, Beginning of Life (BOL)
Parameter
Frequency Range
Frequency Response
Carrier-to-Noise Ratio
Composite Second Order
Composite Triple Beat
Relative Intensity Noise
Symbol
F
S21
CNR
CSO
CTB
RIN
Condition
-
I
F
= 60 mA, 5 MHz-1002 MHz
OMI = 3.7%, 79 ch., NTSC
OMI = 3.7%, 79 ch., NTSC
OMI = 3.7%, 79 ch., NTSC
-
Min
5
-
50
57
65
-150
Typ
-
±0.5
51
-
-
-155
Max
1002
-
-
-
-
-
Unit
MHz
dB
dB
dB
dB
dB/Hz
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.
Fiber Characteristics
SC/APC Connector:
Fiber Length:
Fiber Type:
Standard
> 1.0 meter (1.5 meter typical), with respect to end of package wall.
Single Mode Fiber, SMF-28 or compatible, 900 micron buffer, up to one splice allowed for optical
Power models <16mW. The lossy splice location is defined as below.
Electrical Schematics
Figure 1. 1688 Laser Schematic
Figure 2. 1688 Circuit Schematic
| REV 2012.02
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 ]
