EMCORE 1754C-19-RP-FC-08

1754C C-Band DWDM DFB Laser Component
DATASHEET | JANUARY 2013
FIBER OPTICS
The 1754C laser component is a Dense Wavelength Division Multiplexing
(DWDM) laser for analog CATV applications. It features a distributed-feedback
(DFB) device that has been designed specifically for radio frequency (RF) and
CATV applications. The 1754C laser component has a wide temperature range for
reliable performance in harsh node environments and narrow transmitter designs.
It also features low adiabatic chirp to maximize signal quality in short and long
lengths of fiber. The laser’s excellent inherent linearity minimizes degradation of
the broadcast signals caused by quadrature amplitude modulated (QAM)
channels.
Applications
The 1754C is available in all C-band ITU grid wavelengths.
CATV Broadcast Networks
Networks with Limited Fiber
Archtectures Using Separate Optical
Wavelengths to Carry Targeted Services
Performance Highlights
Min
Available Wavelengths
Features
Operating Temperature Range
Typical
Max
See page 3
Units
nm
+85
C
-40
25
6 - 16
-
-
mW
40
-
100
MHz/mA
-
-
-55
dBc
-
-
-64
dBc
52
-
-
dB
Standard ITU Grid Wavelengths
Optical Output Power
Advanced Analog Chip Design
Adiabatic Chirp (measured at 500 MHz)
Reduced Equipment Requirements in
the Hub
Composite Second-Order Distortion ( CSO )
OC-48 Pin Out
Carrier-to-Noise Ratio ( CNR )
Telcordia Technologies™ 468 Compliant
Frequency Range
5
-
2700
MHz
Wide Temperature Range – Stable Even
in Harsh Environments
RF Return Loss
16
-
-
dB
RoHS Compliant
Composite Triple Beat Distortion ( CTB )
Noise and distortion performance above assume 79 channel NTSC loading with
no QAM, 0 dBm received optical power. See following pages for complete
specifications and operating/test conditions.
| REV 2013.01
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.
1754C C-Band DWDM DFB Laser Component
FIBER OPTICS
DATASHEET | JANUARY 2013
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress
ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the
operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect
device reliability.
Parameter
Operating Temperature Range
Storage Temperature Range
Symbol
Condition
Tc
Continuous
Min
Max
-40
+85
Unit
°C
TSTG
Continuous
-40
+85
°C
Average RF Input Power
-
60 seconds
-
62
dBmV
Laser Forward DC Current
-
Continuous
-
150
mA
Photodiode Reverse Voltage
VMPD
Continuous
-
10
V
Laser Reverse Voltage, DC
-
Continuous
-
1
V
ESD
-
HBM: R = 1500 Ohm,
C = 100pF
-500
500
V
ITEC
Continuous
-1.5
1.5
A
TEC Current
Electrical/Optical Characteristics
Laser Temperature (TL) = 25oC, IF=IOP, Beginning of Life (BOL)
Parameter
Symbol
Condition
Min
Typ
Max
Unit
TC
-
-40
25
+85
C
Optical Output Power
PO
6 mW version
8 mW version
10 mW version
16 mW version
6
8
10
16
-
7.9
9.9
15.9
19.9
mW
Threshold Current
ITH
25C, BOL
Slope Efficiency

Operating Current
IOP
Operating Voltage
Operating Case Temperature
Wavelength
 Drift over TC Range
Laser Adiabatic Chirp
Optical Return Loss
Sidemode Suppression Ratio
-
-
20
mA
.07
-
-
W/A
BOL
-
-
120
mA
VOP
25C, BOL
-
-
2.5

ITU Grid
See page 3
V
nm
OP
If = 60 mA, T = TOP
-
-
40
pm
FM
IF = 60 mA, TOP = 25C
@ 500 MHz
40
-
100
MHz/mA
ORL
-
SMSR
40
-
-
dB
30
-
-
dB
Optical Isolation
ISO
25C
Relative Intensity Noise
RIN
IF = ITH + 70 mA
30
-
-
dB
-
-155
dB/Hz
Nominal Input Impedance
ZIN
-
22
25
27

MPD Responsivity
rPD
VRM = 5V
10
-
200
μA/mW
MPD Dark Current
ID
IOP = 0 mA
VRM = 5V, TOP = 25C
0.2
A
MPD Current Relative to Output Power
-
VRM = 5V, TOP = 25C
10
-
200
mA/W
RTH
TOP = 25 C
9.5
10
10.5
kΩ
Thermistor Temp. Coefficient
TCTH
TOP = 25 C
-
-4.4
-
%/C
TEC Voltage
VTEC
-
-2.5
-
3.8
V
Thermistor Resistance
| REV 2013.01
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.
1754C C-Band DWDM DFB Laser Component
FIBER OPTICS
DATASHEET | JANUARY 2013
RF Characteristic
Laser Temperature (TL) = 25oC, IF=IOP, Beginning of Life (BOL)
Parameter
Carrier-to-Noise Ratio
(1)
Composite Second-Order
Composite Triple Beat
(1)
Condition
Min
Typ
Max
Units
CNR
79 NTSC, 3.3% OMI
1 m fiber min, 4.2 MHz NBW
52
-
-
dB
CSO
79 NTSC, 3.3% OMI
1 m fiber min
-55
dBm
-64
dBc
1
dBp-p
4
dBp-p
(1)
CTB
Frequency Response Flatness
|S21|
RF Return Loss
resistive match 50 to 25 pad
Carrier-to-Noise Ratio
Symbol
(2)
Composite Second-Order
(2)
79 NTSC, 3.3% OMI
1 m fiber min
-
40 MHz to 890 MHz
IF = 60 mA, TOP = 25C
-
-
5 MHz to 2700 MHz
IF = 60 mA, TOP = 25C
|S11|
5 MHz to 2700 MHz
IF = 60 mA, TOP = 25C
16
-
-
dB
CNR
Channel Loading: Frequencies set
at 7, 13, 19, 25, 31, and 37 MHz
51
-
-
dB
-
-
-50
dBm
-
-
-60
dBc
CSO
Receiver thermal noise 8 pA*Hz
-0.5
Photodiode responsivity ~1.1 A/W
Composite Triple Beat
(2)
CTB
Noise Bandwidth 4.2 MHz
(1). Broadband Forward Path
(2). Return Path. Guaranteed by design, not to test in production.
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.
ITU Grid Channel Numbering
Channel
Wavelength
(nm)
Channel
Wavelength
(nm)
Channel
Wavelength
(nm)
62
1527.99
47
1539.77
32
1551.72
61
1528.77
46
1540.56
31
1552.52
60
1529.55
45
1541.35
30
1553.33
59
1530.33
44
1542.14
29
1554.13
58
1531.12
43
1542.94
28
1554.94
57
1531.90
42
1543.73
27
1555.75
56
1532.68
41
1544.53
26
1556.56
55
1533.47
40
1545.32
25
1557.36
54
1534.25
39
1546.12
24
1558.17
53
1535.04
38
1546.92
23
1558.98
52
1535.82
37
1547.72
22
1559.79
51
1536.61
36
1548.51
21
1560.61
50
1537.40
35
1549.32
20
1561.42
49
1538.19
34
1550.12
19
1562.23
48
1538.98
33
1550.92
18
1563.05
| REV 2013.01
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.
1754C C-Band DWDM DFB Laser Component
FIBER OPTICS
DATASHEET | JANUARY 2013
Electrical Schematics
1
NC
10K
14
ISOLATOR
13
2
12nH
RF CHOKE
3
0.01uF
22
LD
4
12
100
5
11
10
MPD
6
(+)
9
CASE
GND
7
(-)
TEC
8
Figure 1. 1754C Laser Simplified Schematic
Figure 2. 1754C Circuit Schematic
Pin Definitions
Pin
Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Thermistor
Thermistor
Dc Laser Bias (-)
MPD Anode (-)
MPD Cathode (+)
Thermal Electric Cooler (+)
Thermal Electric Cooler (-)
Case Ground
Case Ground
NC
Laser Common (+), Case GND
Laser Modulation (-)
Laser Common (+), Case GND
NC
| REV 2013.01
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.
1754C C-Band DWDM DFB Laser Component
FIBER OPTICS
DATASHEET | JANUARY 2013
Outline Diagram (Dimensions are in inches and millimeters)
Fiber type: 0.9 mm O.D. jacketed single mode 9/125 mm (SMF-28)
Fiber length: 130 cm + 10 cm, measured as shown below
Nominal pin lead length: 0.2 inch (from external package wall)
130 + 10 cm
Conn
| REV 2013.01
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.
1754C C-Band DWDM DFB Laser Component
FIBER OPTICS
DATASHEET | JANUARY 2013
Laser Safety
This product meets the appropriate standard in Title 21 of the Code of Federal Regulations (CFR). FDA/CDRH Class 1 laser
product. This device has been classified with the FDA/CDRH under accession number 0220309.
All Versions of this laser are Class 1 laser product, tested according to IEC 60825-1:2007/EN 60825-1:2007
Single-mode fiber pigtail with SC/APC connectors (standard).
Wavelength = 1.5 m.
Maximum power = 30 mW.
Because of size constraints, laser safety labeling (including an FDA class 1 label) is not affixed to the module, but attached
to the outside of the shipping carton.
Product is not shipped with power supply.
Caution: Use of controls, adjustments and procedures other than those specified herein may result in hazardous
laser radiation exposure.
DANGER
INVISIBLE LASER
AVOID DIRECT
EXPOSURE TO BEAM
RADIATION
Wavelength: 1.3 m
Max. Output: 50 mW,
Class 1 Laser Product
DANGER
INVISIBLE LASER RADIATION
IS EMITTED FROM THE END
OF FIBER OR CONNECTOR
Avoid direct exposure to beam
Do not view beam directly with
optical instruments
INVISIBLE LASER RADIATION EMITTED FROM END OF FIBER OR CONNECTOR
Avoid exposure to beam
Class 1 Laser Product IEC-60825-1:20007 Max. Output:50 mw
Wavelength: 1.3 m
| REV 2013.01
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.
1754C C-Band DWDM DFB Laser Component
FIBER OPTICS
DATASHEET | JANUARY 2013
Ordering Code Definitions
1754C – ww - xx – yy – zz
Family Name
Analog 1550 nm, DFB, Laser
ITU Channel Wavelengths
ww = 18: Channel 18, 1563.05 nm
ww = 19: Channel 19, 1562.23 nm
…..
ww = 62: Channel 62, 1527.99 nm
CATV Channel Plan
xx = BB: Broadband
xx = RP: Return Path
Connectors
yy = FC: FC/APC
yy = SC: SC/APC
Minimum Optical Power
zz = 06: 6 mW
zz = 08: 8 mW
zz = 10: 10 mW
zz = 16: 16 mW
Example
1754C-32-BB-SC-08: 1754C, ITU channel 32, 1551.72 nm, SC/APC connector, 8 mW minimum optical power.
| REV 2013.01
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.