Up to 400 mW Fiber Bragg Grating Stabilized 980 nm Pump Modules
2745 Series
Key Features
• High kink-free powers to 400 mW
• Reduced TEC power consumption, compatible with legacy
temperature control
• Low-profile 14-PIN butterfly planar package
• Fiber Bragg grating stabilization
• Wavelength selection available
• Integrated thermoelectric cooler, thermistor, and
monitor diode
• High dynamic range
Applications
• Dense wavelength division
multiplexing (DWDM) EDFAs for
small package designs
• High bit-rate, high channel-count EDFAs
• CATV distribution
The JDSU 2745 series of 980 nm pump modules uses a planar construction with
chip on subcarrier. The `semicooled' 45°C laser diode operation provides for a
significant reduction in TEC and overall power consumption. The high-power
JDSU laser chip is hermetically sealed in a low-profile, 14-pin butterfly package,
fitted with a thermistor, thermoelectric cooler, and monitor diode. The module
meets the stringent requirements of the telecommunications industry, including
Telcordia GR-468-CORE for hermetic 980 nm pump modules.
The 2745 series pump module, which uses fiber Bragg grating stabilization to lock
the emission wavelength, provides a noise-free, narrowband spectrum, even
under changes in temperature, drive current, and optical feedback. Wavelength
selection is available for applications requiring the highest performance in
spectrum control with the highest powers available.
Compliance
• Telcordia GR-468-CORE
NORTH AMERICA
:
800 498-JDSU (5378)
WORLDWIDE
:
+800 5378-JDSU
WEBSITE
:
www.jdsu.com
2745 SERIES
2
Dimensions Diagram
250 µm Bare Fiber Type A Wiring
Note: Specifications in mm unless otherwise noted; tolerance = .x ± .3, .xx ± .20.
The module pigtail consists of 250 µm buffered, Corning PureMode
TM
HI-1060 Single-
mode fiber.
45.04
30.0
1600 M I N (1900 NOM )
1000 NOM . TO CENTER OF GRATING
26 . 0
20 . 8
17.8
1 .5
500 NOM . TO C/L OF SPLICE (OPTIONAL)
4 0 . 5 N O M . 1 5 . 5 1 2. 7
9 .0
STRAIN RELIEF
FLEXIBLE <=400
MICRON RECOAT
4.6
4X
2 .5 0 TH RU
1 2X 2 . 5 L E A D S P A C I N G
T O L E R A N C E I S N O N -A C C U M U L A T I V E
14X 0.51 LEAD WIDTH
260 < RECOAT <
935 (MICRON)
2.8
4.0 0
1.50
7 . 7 ±0. 20
RED NON-XYLENE MARK
FOR RECOAT WITH 295 35 μm
3. 9
1.5
5 . 6 T O L EA D C / L
2X ~ 5
5. 26
0.25 LEAD THICKNESS
Pinout
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Description
Cooler (+)
Thermistor
Monitor PD Anode
Monitor PD Cathode
Thermistor
N/C
N/C
N/C
N/C
Laser Anode
Laser Cathode
N/C
Case Ground
Cooler (-)
7
6
5
4
3
2
1
8
9
10
11
12
13
14
2745 SERIES
3
Table 1 Absolute Maximum Ratings
Parameter
Operating case temperature
Storage temperature
LD submount temperature
LD reverse voltage
LD forward current
LD current transient
LD reverse current
PD reverse voltage
PD forward current
Electrostatic discharge (ESD)
TEC current
TEC voltage
Axial pull force
Side pull force
Fiber bend radius
Relative humidity
Lead soldering time
Symbol
T
op
T
stg
T
LD
V
r
Test Conditions
-
2,000 hours
-
-
-
1 µs maximum
-
-
-
C = 100 pF, R = 1.5
Ω,
human body model
-
-
3 x 10 seconds
3 x 10 seconds
-
40°C
300°C
Minimum
-5°C
-40°C
0°C
-
-
-
-
-
-
-
-
-
-
-
16 mm
5%
-
Maximum
75°C
85°C
50°C
2V
1,000 mA
1,100 mA
10 µA
20 V
10 mA
1,000 V
2.5 A
4.0 V
5N
2.5 N
-
95%
10 seconds
V
PD
I
PD
V
ESD
I
TEC
V
TEC
R
H
Note: Absolute maximum ratings are the maximum stresses that may be applied to the pump module for short periods of time without causing damage. Stresses in excess of the absolute maximum ratings can
permanently damage the device. Exposure to absolute maximum ratings for extended periods, or exposure to more than one absolute maximum rating simultaneously may adversely affect device reliability.
Table 2 Operating Parameters
(BOL, T
case
= 0 to 75°C, T
LD
= 45°C, -50 dB reflection, unless noted otherwise)
Product Code
Maximum Operating
Power P
op
(mW)
100
120
135
155
170
190
205
225
240
260
275
295
310
330
340
Maximum Operating
Operating Current I
op
(mA)
300
320
330
360
400
440
480
520
560
600
640
680
725
780
820
Minimum Kink-Free
Power P
max
(mW)
120
140
160
180
200
220
240
260
280
300
320
340
360
380
400
Kink-Free Current
I
max
(mA) Maximum
340
355
380
420
460
510
560
600
650
700
750
820
860
910
950
27-xxxx-120-45
27-xxxx-140-45
27-xxxx-160-45
27-xxxx-180-45
27-xxxx-200-45
27-xxxx-220-45
27-xxxx-240-45
27-xxxx-260-45
27-xxxx-280-45
27-xxxx-300-45
27-xxxx-320-45
27-xxxx-340-45
27-xxxx-360-45
27-xxxx-380-45
27-xxxx-400-45
2745 SERIES
4
Table 3 Available Peak Wavelength Selection
(T
amb
= 25±3°C, 50 mW < P < P
op
)
Product Code
27-8000-xxx-45
27-7402-xxx-45
27-7552-xxx-45
27-7602-xxx-45
27-7702-xxx-45
Minimum Peak Wavelength
973.5 nm
973.5 nm
974.5 nm
975.0 nm
976.0 nm
Maximum Peak Wavelength
978.0 nm
975.0 nm
976.5 nm
977.0 nm
978.0 nm
Table 4 Electro-optical Performance
(BOL,T
case
= 0 to 75°C,T
LD
= 45°C, -50 dB reflection, unless noted otherwise)
Parameter
Threshold current
Forward voltage
Spectral width
Peak wavelength tuning
Side-mode suppression ratio
Relative optical power stability
Symbol
I
th
V
f
Δλ
RMS
Δλ
P
/ΔΤ
amb
SMSR
Test Condition
-
I
f
= I
op
50 mW < P < P
op
50 mW < P < P
op
50 mW < P < P
op
Peak-to-peak, T = 10 min,
50 kHz sampling, T
case
= 25 °C
20 mW < P < P
op
12 mW < P < 20 mW
3.5 mW < P < 12 mW
20 mW < P < P
op
1
20 mW < P < P
op
2
20 mW < P < P
op
T
case
= 75°C
T
case
= 75°C
-
-
Minimum
-
-
-
-
15 dB
Maximum
40 mA
2.5 V
2.0 nm
0.02 nm/°C
-
Tracking error
Tracking ratio
Monitor diode responsivity
TEC current
TEC voltage
Thermistor resistance
Thermistor constant
TE
TR
Resp
BF
I
TEC
V
TEC
R
th
B
-
-
-
-25%
0.75
2 µA/mW
-
-
9.5 kΩ
3600 K
4%
10%
25%
25%
1.25
10 µA/mW
1.5 A
2.5 V
10.5 kΩ
4200 K
1. The Tracking Error is defined as the normalized change of output power relative to the operating power over case temperature range 0°C to 75°C, at constant back face monitor current corresponding
to the operating power at 25°C.
2. The Tracking Ratio is a measure of the front-to-back tracking when the output power is varied. On a plot of optical power versus back-face photocurrent, a straight line is drawn between the minimum
power (20 mW) and the operating power P
op
points. The tracking ratio is defined as the ratio between measured optical power (shown as data points on the plot) to the value derived from the straight line.
2745 SERIES
5
Table 5 TEC and Total Module Power Consumption
(For
ΔT
= 30°C, BOL, T
case
= 75°C, T
ld
= 45°C unless noted otherwise)
Product Code
TEC Current
I
max
(A)
0.58
0.60
0.63
0.65
0.69
0.71
0.78
0.83
0.90
0.94
1.00
1.06
1.13
1.21
1.28
TEC Voltage
V
max
(V)
0.90
0.92
0.96
0.98
1.04
1.07
1.17
1.25
1.31
1.38
1.45
1.52
1.57
1.65
1.75
TEC Power Consumption
P
max
(W)
0.52
0.55
0.60
0.64
0.72
0.76
0.91
1.04
1.18
1.30
1.45
1.61
1.77
2.00
2.24
Total Module Power
Consumption P
max
(W)
1.01
1.08
1.17
1.26
1.43
1.56
1.81
2.04
2.28
2.51
2.76
3.03
3.31
3.68
4.03
27-xxxx-120-45
27-xxxx-140-45
27-xxxx-160-45
27-xxxx-180-45
27-xxxx-200-45
27-xxxx-220-45
27-xxxx-240-45
27-xxxx-260-45
27-xxxx-280-45
27-xxxx-300-45
27-xxxx-320-45
27-xxxx-340-45
27-xxxx-360-45
27-xxxx-380-45
27-xxxx-400-45
Ordering Information
For more information on this or other products and their availability, please contact your local JDSU account manager or
JDSU directly at 1-800-498-JDSU (5378) in North America and +800-5378-JDSU worldwide, or via e-mail at
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