DATASHEET| MARCH 16, 2008
1792 ECCW Narrow Linewidth CW External
Cavity Laser Diode
The 1792 ECCW series external cavity laser is a cost effective solution
for a coherent laser source. The laser is fabricated in a 14-pin
hermetically sealed butterfly package that incorporates a bias tee
circuit, an integrated thermoelectric cooler (TEC), a thermistor, and a
Features
Narrow linewidth, < 10 kHz
available
ITU wavelengths across the C-
band
100 GHz channel spacing
10 mW minimum output power
Industry standard, high
reliability, hermetic 14-pin
butterfly package
Excellent long-term
wavelength stability eliminates
the need for a wavelength
locker
Back-facet monitor
Designed to meet Telcordia
GR-468 qualification standard
back facet monitor photodiode. The 1792 ECCW provides substantially
lower phase noise and a longer coherence length than other
semiconductor lasers, including DFB lasers. The wavelength stability is
assured by design, eliminating the need for wavelength lockers and
complex feedback control circuits.
Performance Highlights
Min
Minimum Optical Output Power, Version A
Version B
Optical Linewidth, CW, Version A
Version B
Operating Case Temperature Range
Center Wavelength (100 GHz ITU Grid)
Optical Isolation
Optical Return Loss
Side Mode Suppression Ratio, CW
Relative Intensity Noise
15
10
-
-
-10
1527
35
40
40
-
Typical
20
12
-
25
-
-
-
-
-
-155
Max
-
10
50
+65
1570
-
-
-
-
Units
mW
kHz
°C
nm
dB
dB
dB
dB/Hz
Applications
Seismic sensor applications
Interferometry
Spectroscopy
Lidar
Optical test and
instrumentation
Microwave photonics
See following pages for complete specifications and conditions.
For more information on this and other products:
Contact Sales at Emcore 626-293-3400, or visit www.emcore.com.
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
DATASHEET| MARCH 16, 2008
Absolute Maximum Ratings
1
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.
Parameters
Storage Temperature
Operating Case Temperature
Forward Current
Reverse Voltage
Photodiode Forward Current
Photodiode Reverse Voltage
2
TEC Current
TEC Voltage
Fiber Bend Radius
Tensile Strength, Fiber to Case
3
Lead Soldering Time
4
Package Mounting Screw Torque
Operating Humidity: Non-Condensing
Storage Humidity: Non-Condensing
1.
Symbol
T
STG
T
OP
I
OP
V
R
I
MPD,F
V
MPD,R
I
TEC
V
TEC
R
F
t
sold
X
op
X
op
Condition/Notes
Non-Operating
Continuous
CW
Continuous
Continuous
Continuous
-
Continuous
Continuous
Continuous
< 260°C
-
Continuous
Continuous
MIN
-40
-20
-
-
-
-
-
-
35
-
-
-
5
5
MAX
85
75
150
2
2
10
1.8
3.5
-
5
10
0.12
95
95
Unit
o
C
o
C
mA
V
mA
V
A
V
mm
N
sec
m*N
%
%
2.
3.
4.
Absolute maximum data are limited to system design only; proper device performance is not guaranteed over rating listed above. Operation
beyond these maximum conditions may degrade device performance, lead to device failure, shorter lifetime, and will invalidate the device
warranty.
TEC current should not exceed 2.0 A during turn on, and case temperature under any conditions should not change faster than 10
o
C/min.
Soldering iron only; no reflow or dip soldering allowed.
See mounting recommendations below.
EMCORE CORPORATION
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
DATASHEET| MARCH 16, 2008
Electrical/Optical Characteristics
Parameters
Minimum Optical Output Power
Optical Linewidth
1,2,3,4
Symbol
P
O
Threshold Current
Laser Bias Current
Forward Voltage
MPD Current
MPD Tracking Error
TEC Set Temperature
5
I
TH
T
OP
V
F
I
MON
TE
T
s
λ
c
∆λΤ
c
∆λ
offset
∆f/∆T
∆f/∆Ι
-
RIN
SMSR
ORL
I
TEC
V
TEC
∆T
R
TH
Β
Conditions/Notes
Version A
Version B
Version A, SMF
Version A, PMF
Version B
-
-
CW, P
O
= 10 mW
CW, P
O
= 10 mW
-10ºC < T
C
< 65ºC
Specified for every laser
MIN
15
10
-
-
-
-
-
-
0.05
-
16
Typ
20
12
-
25
25
-
-
-
-
-
-
MAX
-
-
10
50
50
30
130
2.0
0.5
±0.5
35
Unit
mW
kHz
mA
mA
V
mA
dB
ºC
nm
pm
pm
GHz/ºC
MHz/m
A
dB
dB/Hz
dB
dB
A
V
ºC
kΩ
K
Center Wavelength (100 GHz ITU Grid)
Wavelength Drift with Case (-10 to 65 ºC)
Temperature
Wavelength Offset from DWDM ITU Grid
Frequency Temperature Coefficient
Frequency Current Coefficient
Optical Isolation
Relative Intensity Noise
Side Mode Suppression Ratio
Optical Return Loss
TEC Current
TEC Voltage
TEC Capacity
Thermistor Resistance
Thermistor Beta Constant
1.
2.
3.
4.
5.
See ITU Grid Channel Numbering Table
Relative to 25ºC Case
-
-
±40
Temperature
TEC Temperature at T
S
-
-
±80
-
-
-10ºC < T
C
< 65ºC
CW, at 200 MHz
CW, P
O
> 1 mW
-
T
C
= 65ºC, T
OP
= T
S
T
C
= 65ºC, T
OP
= T
S
T
C
= 65ºC
T
OP
= T
S
-
-
-
35
-
40
40
-
-
50
9.5
-
3.5
200
-
-155
-
-
-
-
-
10.0
3891
5
250
-
-
-
-
1.5
3.0
-
10.5
-
CW, at rated power.
Lorentzian linewidth measured at –30 dB.
Gaussian linewidth measured at –20 dB.
Linewidth measured with self-delayed heterodyne method at T
s
, I
op
TEC temperature at the recommended value.
EMCORE CORPORATION
3
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
DATASHEET| MARCH 16, 2008
Fiber Pigtail Specifications
Parameters
Fiber Type
Mode Field Diameter
Cladding Diameter
Outer Diameter of Buffer
Length of Pigtail
Optical Connector
Conditions/Notes
MIN
Typ
MAX
TM
Single Mode Fiber, Corning SMF-28 , or
*
Polarization Maintaining Fiber, Fujikura PANDA
-
9.0
10.4
11
-
123.5 125.0 126.5
-
900
-
-
-
-
2
-
(See Ordering Information)
Unit
µm
µm
µm
m
* NOTE: PMF versions available in sample quantities only.
Test Data
14
12
10
Output Power
LD Voltage
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
10 20 30
40
50
60
70 80
0
90 100
14
12
10
Output Power
Photomonitor
Output
Power
(mW)
8
6
4
2
0
LD
Output
Voltage Power
(V)
(mW)
8
6
4
2
0
0
10 20 30
40
50
60
70 80
180
160
140
120
100
80
60
40
20
0
90 100
MPD
Current
(mA)
Bias
Current [mA]
Bias
Current (mA)
Bias
Current [mA]
Bias
Current (mA)
NOTE: The test data above assumes linewidth version B.
EMCORE CORPORATION
4
1792 ECCW Narrow Linewidth CW
External Cavity Laser Diode
Outline Drawing
DATASHEET| MARCH 16, 2008
Pin Definitions
Pin
No.
8
9
10
11
12
13
14
Pin No. Function
1
2
3
4
5
6
7
Thermistor
Thermistor
Laser DC bias (-)
Photodetector Anode (-)
Photodetector Cathode (+)
TEC (+)
TEC (-)
Function
Not Connected
Case Ground
Case Ground
Case Ground
Laser RF Cathode (-)
Case Ground
Case Ground
EMCORE CORPORATION
5
FPGA/CPLD
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