Product Bulletin
13/5
08-1
9270
Temperature Tunable
2.5 mW WDM Laser
for Direct Modulation
in Links up to 180 km
CQF413/508 Series
dispersion penalty at BER = 10
-10
is less than 2 dB
for a total dispersion of up to 3240 ps/nm at
1550 nm. Wavelength drift tests have been per-
formed to warrant long term wavelength stability.
The CQF413/508 is a 2 channel tunable (100 GHz
ITU grid) directly modulated laser source for use
in metro WDM systems up to a bit rate of
2.5 Gb/s and 180 km link length. The peak output
power is 2.5 mW.
Wavelengths are available in the range from
1527.99 to 1567.95 nm in accordance with the ITU
recommendation. Adhering to the 100 GHz grid
each laser can be adjusted between 2 adjacent
channels (3 channels adhering to the 50 GHz grid)
by temperature tuning.
The laser is available in a standard 14-pin butterfly
package with a single-mode fiber. It has excellent
thermal stability (e.g., wavelength drift with case
temperature is much better than 1 pm/°C).
Dependence of the optical isolation on case
temperature is minimized by a cooled isolator.
The internal bias-T network and built-in monitor
diode enable simple DC-bias conditioning and
output power stabilization of the laser diode.
Under small signal modulation conditions, the
bandwidth of the device exceeds 3 GHz. Due to the
intrinsic low chirp characteristic of the DFB laser,
the device is especially suitable for digital transmis-
sion at 1550 nm. Based on standard single-mode
fiber with non-zero dispersion, the maximum
Key Features
• 1550 nm (WDM) DFB laser diode
• Temperature tunable over 2 x 100 GHz channels
• 2.5 Gb/s suitable for OC-48 / STM-16
• Built-in cooled optical isolator
• Wavelengths available from 1527 - 1567 nm
• 25
W
electrical impedance matching
• 180 km distance
(3240 ps/nm dispersion at 1550 nm)
• Operation up to 85 °C
Applications
• WDM metro architectures and cable television
(CATV) networks, where low optical output
power and very low dispersion are required.
Especially suitable for systems operating in
environments with uncontrolled ambient
temperature.
• 100 GHz ITU grid system design without
increasing the complexity of inventory compared
to 200 GHz system architectures.
CQF413/508 Series | 2
Specifications
Limiting Values
Parameter
Laser diode
Radiant output power from pigtail
Reverse voltage
Forward current
Monitor diode
Reverse voltage
Forward current
Module
Storage temperature range
Operating temperature range
Fiber pigtail
Bending radius
Tensile strength fiber to case
Symbol
P
peak
V
R
I
F
V
R
I
F
T
stg
T
op
R
F
Conditions
see note 1
-
-
-
-
-
cooler active
-
-
Min
2.5
-
0.05
-
-
1527
20
-
30
-
30
3
-
-
25
-
-
9.5
3800
-
-
-
-
-
Min
-
-
-
-
-
-40
-20
35
-
Typ
-
-
-
20
-
-
-
-
45
-
35
-
-
-
-
-
-
10
-
-
-
-
-
68
Max
15
2.0
200
20
10
+85
+85
-
5
Max
-
85
0.1
35
2.0
1567
40
1
-
2
-
-
-8
-5
1000
0.1
15
10.5
4100
1.0
1.5
2.2
3.2
-
Unit
mW
V
mA
V
mA
°C
°C
mm
N
Unit
mW
mA
mW/mA
mA
V
nm
°C
pm/°C
dB
dB
dB
GHz
dB
dB
mA/mW
mA
%
kW
K
A
A
V
V
years
Characteristics
(T
chip
= T
l
, T
amb
at 25 °C, P
avg
= 1 dBm unless otherwise specified)
Parameter
Symbol Conditions
Radiant output power from pigtail
Operating current
Differential efficiency
Laser diode
Threshold current
Forward voltage
Central wavelength (ITU grid)
Laser set temperature for
l
c
Wavelength drift with case temperature
Side mode suppression ratio
Dispersion penalty at BER = 10
-10
Optical isolation
RF Characteristics
Bandwidth (-3 dB)
Return loss
Monitor Diode
(V
R
= 10 V)
Monitor diode responsivity
Dark current
Temperature tracking error
Thermistor
Resistance
Thermistor constant
Thermo-Electric Cooler
Cooler current
Cooler voltage
Reliability
Long term
l-drift,
see note 2
Notes
1. Under modulation: P
avg
»
P
peak
/ 2 (mW) or P
avg
»
P
peak
- 3 dBm (dBm).
2. Mechanical integrity/environmental endurance tested according to Telcordia GR-468-CORE and MIL-STD-883
ML = Median Life, EOL = End Of Life.
P
peak
I
op
h
I
th
V
F
l
c
T
l
TE
l
SMSR
DP
ISO
S
21
S
11
see note 1
-
-
-
-
-
-
20 °C < T
l
< 40 °C
-
NRZ, PRBS = 2
23
-1,
3240 ps/nm at 1550 nm with ER > 9 dB
-
-
from 3 MHz to 2 GHz
from 2 GHz to 3 GHz
-
-
0 °C < T case < 85 °C
T
th
= 25 °C
-
at
DT
= 45 °C
at
DT
= 65 °C
at
DT
= 45 °C
at
DT
= 65 °C
EOL:
Dl
= 0.1 nm
R
I
md
TE
R
th
B
I
cool
V
cool
ML
CQF413/508 Series | 3
Typical Performance Characteristics
10
-3
BER
10
DC & TEC control
Digital scope
CQF413
80km
switch
Pattern Generator
traject
EDFA
λ
-filter
traject
100km
10%
90%
coupler
-4
10
10
10
10
10
Attenuator
-5
-6
-7
-8
-9
- 10
BER tester
Receiver
10
10
- 12
- 36
- 34
- 32
- 30
- 28
dBm
Each CQF413 laser is separately tested for dispersion penalty
using a set-up with the required fiber length of 180 km
(3240 ps/nm at 1550 nm).
Typical bit error rate measurement and eye-diagram for one
channel of the CQF413 (2.5 Gb/s, NRZ, ER > 9 dB, PRBS:
n = 23, 3240 ps/nm at 1550 nm). Dispersion penalty is less
than 2 dB at BER = 10
-10
.
0
3
S
21
Relative intensity [dB]
-10
0
S
11
-20
-30
-40
-50
-12
Signal [dB]
-3
-6
-9
-60
1530
1535
1540
Wavelength [nm]
1545
1550
-15
0
1
2
f [GHz]
3
4
5
The optical spectrum measured at average output power for
the CQF413.
Typical RF behavior measured at average output power for
CQF413. S
11
denotes the RF electrical reflection coefficient at
the 25
W
input measured with a 50
W
test set. S
21
is the small
signal electrical-to-optical transfer coefficient.
CQF413/508 Series | 4
Specifications Continued
Characteristics
Parameter
Single Mode Fiber Pigtail
Mode field diameter
Cladding diameter
Eccentricity of core
Outer diameter of tight buffer
Length of pigtail
Symbol
Ø
mf
Ø
cl
e
Ø
sc
Min
-
123.5
-
-
1
Typ
9.0
125
-
900
-
Max
-
126.5
1.0
-
-
Unit
mm
mm
mm
mm
m
Mechanical Dimensions
Pin-Out
1 thermistor
2 thermistor
3 LD cathode DC input via
inductance
4 PD anode
5 PD cathode
6 cooler anode
7 cooler cathode
8 case GND
9 case GND
10 not connected
11 LD anode, case
12 LD cathode, AC input
13 LD anode, case
14 not connected
CQF413/508 Series | 5
Ordering Information
For more information on this or other products and their availability, please contact your local JDS Uniphase account manager
or JDS Uniphase directly at 1-800-498-JDSU (5378) in North America and +800-5378-JDSU worldwide or via e-mail at
sales@jdsu.com.
Sample: CQF413/508-19270 for optical frequencies 192.70 THz and 192.60 THz.
Attention:
Order confirmations on this part number will be preceeded by FG’ (e.g. FG’CQF413/508-19270).
CQF413/508-
JDSU
Channel
Code
19620
19610
19600
19590
19580
19570
19560
19550
19540
19530
19520
19510
19500
19490
19480
19470
19460
Highest Optical
Frequency
f
c
(THz)
196.20
196.10
196.00
195.90
195.80
195.70
195.60
195.50
195.40
195.30
195.20
195.10
195.00
194.90
194.80
194.70
194.60
Shortest Wavelength
(vacuum)
λ
c
(nm)
1527.99
1528.77
1529.55
1530.33
1531.12
1531.90
1532.68
1533.47
1534.25
1535.04
1535.82
1536.61
1537.40
1538.19
1538.98
1539.77
1540.56
JDSU
Channel
Code
19450
19440
19430
19420
19410
19400
19390
19380
19370
19360
19350
19340
19330
19320
19310
19300
19290
Highest Optical
Frequency
f
c
(THz)
194.50
194.40
194.30
194.20
194.10
194.00
193.90
193.80
193.70
193.60
193.50
193.40
193.30
193.20
193.10
193.00
192.90
Shortest Wavelength
(vacuum)
λ
c
(nm)
1541.35
1542.14
1542.94
1543.73
1544.53
1545.32
1546.12
1546.92
1547.72
1548.51
1549.32
1550.12
1550.92
1551.72
1552.52
1553.33
1554.13
JDSU
Channel
Code
19280
19270
19260
19250
19240
19230
19220
19210
19200
19190
19180
19170
19160
19150
19140
19130
19120
Highest Optical
Frequency
f
c
(THz)
192.80
192.70
192.60
192.50
192.40
192.30
192.20
192.10
192.00
191.90
191.80
191.70
191.60
191.50
191.40
191.30
191.20
Shortest Wavelength
(vacuum)
λ
c
(nm)
1554.94
1555.75
1556.56
1557.36
1558.17
1558.98
1559.79
1560.61
1561.42
1562.23
1563.05
1563.86
1564.68
1565.50
1566.31
1567.13
1567.95
Fiber Termination
• Default 1.25 mm or 2.5 mm ferrule
• FC/PC or SC/PC connectors optional
Telcordia is a trademark of Telcordia Technologies Incorporated.
North America toll-free: 1-800-498-JDSU (5378)
Worldwide toll-free: +800-5378-JDSU
www.jdsu.com
All statements, technical information and recommendations related to the products herein are based upon information
believed to be reliable or accurate. However, the accuracy or completeness thereof is not guaranteed, and no responsibility is
assumed for any inaccuracies. The user assumes all risks and liability whatsoever in connection with the use of a product or its
application. JDS Uniphase reserves the right to change at any time without notice the design, specifications, function, fit or
form of its products described herein, including withdrawal at any time of a product offered for sale herein. JDS Uniphase
makes no representations that the products herein are free from any intellectual property claims of others. Please contact JDS
Uniphase for more information. JDS Uniphase and the JDS Uniphase logo are trademarks of JDS Uniphase Corporation. Other
trademarks are the property of their respective holders. Copyright JDS Uniphase Corporation. All rights reserved.
10143091 Rev. 001 01/04
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