Product Bulletin
CQF9
Seria 35/108-19
l Nr: 2
2
10748 70
M
ade in
the N
ether
lands
2.5 mW 1550 nm CW DFB
Laser with PM Fiber for
WDM Applications
CQF935/108 Series
Key Features
•
1550 nm WDM distributed feedback laser diode
•
>2.5 mW output power
•
Polarization maintaining fiber
•
Built-in thermoelectric cooler
•
Cooled built-in optical isolator
•
1527 - 1564 nm wavelength range
•
0.8 nm (100 GHz) spacing
•
0.4 nm (50 GHz) spacing optional
Applications
•
Long haul and metro DWDM architectures
The JDS Uniphase CQF935/108 series laser is
specifically developed for wavelength division
multiplexing (WDM) systems, where it is used as a
wavelength selected source in combination with an
external modulator, such as the LiNbO
3
-based
Mach-Zehnder.
Selected wavelengths comply with ITU recommen-
dations, both in range (channels from 1527.61 to
1564.68 nm) and in channel definition, thus
adhering to the 100 GHz grid relative to a fre-
quency of 193.1 THz. Each laser's wavelength is
accurately measured, and the laser itself is accom-
panied by a datasheet with the laser performance
at the temperature T
l
, where the required wave-
length channel is reached.
The CQF935/108 shows high side mode suppres-
sion ratios, very low relative intensity noise, and
small linewidths. It is available in a standard 14-
pin butterfly package equipped with a polarization
maintaining fiber to facilitate coupling to the
modulator, and shows superb thermal stability.
CQF935/108 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
Case 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
-
-
-
-
-
(note
1
)
Cooler active
-
(note
1
)
Min
-
-
-
-
-
-40
0
35
-
Min
2.5
-
-
1527
20
-
30
30
-
-
-
0.07
25
-
-
9.5
3800
Typ
-
-
25
-
-
-
45
35
-
<2
-
-
-
-
-
10
-
-
-
-
-
-
-
-
20
-
300
Max
15
2.0
200
20
10
85
65
-
5
Max
-
100
40
1564
35
2.0
-
-
-135
5
0.001
0.12
500
0.1
10
10.5
4100
1.2
2.5
11.5
128
420
1.0
-
-
-
-
Unit
mW
V
mA
V
mA
°C
°C
mm
N
Unit
mW
mA
mA
nm
°C
V
dB
dB
dB/Hz
MHz
nm/°C
nm/°C
µA/mW
µA
%
kΩ
K
A
V
µm
µm
µm
mm
m
dB
m
years
Characteristics
(T
chip
= T
λ
, T
amb
at 25 °C, P
O
= 2.5 mW unless otherwise specified)
Parameter
Symbol Conditions
Radiant output power from pigtail
Operating current
Laser Diode
Threshold current
Central wavelength (ITU grid)
Laser set temperature for
λ
c
Forward voltage
Side mode suppression ratio
Optical isolation
Relative intensity noise
Spectral linewidth
Wavelength drift with case temp.
Wavelength temperature tunability
Monitor Diode
(V
R
= 10 V)
Monitor diode responsivity
Dark current
Temperature tracking error
Thermistor
Resistance
Thermistor constant
Thermoelectric Cooler
(∆T
= 45
°C)
P
O
I
op
I
th
λ
c
T
λ
V
F
SMSR
ISO
RIN
∆λ
-
-
R
I
md
TE
R
th
B
20
°C
< T
λ
< 35
°C
-
-
-
-
-
-
-
50 KHz - 2.5 GHz
FWHM
0 °C < T
case
< 65 °C
20 °C < T
λ
< 35 °C
-
-
0
°C
< T
case
< 65
°C
T
th
= 25 °C
-
Cooler current
I
cool
-
-
Cooler voltage
V
cool
-
-
Polarization Maintaining Fiber Pigtail
(Fujikura SM.15-P-8/125-UV/UV 400 PANDA or equivalent)
Mode field diameter
Cladding diameter
Diameter of secondary coating
Diameter of loose tube
Length of loose tube
Polarization extinction ratio
Length of pigtail
Reliability
Long term wavelength drift (note
1
)
ML = Median Life, EOL = End Of Life.
Ø
mf
Ø
cl
Ø
sc
Ø
LT
l
LT
ER
-
ML
λ
-
-
-
-
-
E-field along slow axis
-
EOL:
∆λ
= 0.2 nm
9.5
122
380
0.8
0.9
18
1
-
1. Mechanical integrity/environmental endurance tested according to Telcordia GR-468-CORE and MIL-STD-883.
CQF935/108 Series | 3
Typical Performance Characteristics
4
Relative Intensity [dB]
0
-10
-20
-30
-40
-50
-60
1530
1535
1540
Wavelength [nm]
1545
1550
Light Output (mW)
3
2
1
0
0
25
50
Current (mA)
75
100
Typical L-I curve for the CQF935. Each laser is characterized
at the temperature for which the specified wavelength
channel
l
c
is reached.
The use of multi-quantum well technology results in excellent
side-mode suppression ratios and small linewidths.
Dimensions Diagram
(Specifications in mm [inches] unless otherwise noted; tolerance = ±0.15 [±0.006]; coverpipe may change.)
Pinout
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
Fiber Termination:
Default 1.25 mm or 2.5 mm ferrule
CQF935/108 Series | 4
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: CQF935/108-19270 for wavelength 1555.75 nm.
Attention:
Order confirmations on this part number are preceeded by FG’ (e.g., FG’CQF935/108-19270).
CQF935/108-
Channel
Code
19630
19625
19620
19615
19610
19605
19600
19595
19590
19585
19580
19575
19570
19565
19560
19555
19550
19545
19540
19535
19530
19525
19520
19515
19510
19505
19500
19495
19490
19485
19480
19475
19470
Optical
Frequency
f
c
(THz)
196.30
196.25
196.20
196.15
196.10
196.05
196.00
195.95
195.90
195.85
195.80
195.75
195.70
195.65
195.60
195.55
195.50
195.45
195.40
195.35
195.30
195.25
195.20
195.15
195.10
195.05
195.00
194.95
194.90
194.85
194.80
194.75
194.70
Wavelength
(Vacuum)
λ
c
(nm)
1527.22
1527.60
1527.99
1528.38
1528.77
1529.16
1529.55
1529.94
1530.33
1530.73
1531.12
1531.51
1531.90
1532.29
1532.68
1533.07
1533.47
1533.86
1534.25
1534.64
1535.04
1535.43
1535.82
1536.22
1536.61
1537.00
1537.40
1537.79
1538.19
1538.58
1538.98
1539.37
1539.77
Channel
Code
19465
19460
19455
19450
19445
19440
19435
19430
19425
19420
19415
19410
19405
19400
19395
19390
19385
19380
19375
19370
19365
19360
19355
19350
19345
19340
19335
19330
19325
19320
19315
19310
19305
Optical
Frequency
f
c
(THz)
194.65
194.60
194.55
194.50
194.45
194.40
194.35
194.30
194.25
194.20
194.15
194.10
194.05
194.00
193.95
193.90
193.85
193.80
193.75
193.70
193.65
193.60
193.55
193.50
193.45
193.40
193.35
193.30
193.25
193.20
193.15
193.10
193.05
Wavelength
(Vacuum)
λ
c
(nm)
1540.16
1540.56
1540.95
1541.35
1541.75
1542.14
1542.54
1542.94
1543.33
1543.73
1544.13
1544.53
1544.92
1545.32
1545.72
1546.12
1546.52
1546.92
1547.32
1547.72
1548.12
1548.51
1548.92
1549.32
1549.72
1550.12
1550.52
1550.92
1551.32
1551.72
1552.12
1552.52
1552.93
Channel
Code
19300
19295
19290
19285
19280
19275
19270
19265
19260
19255
19250
19245
19240
19235
19230
19225
19220
19215
19210
19205
19200
19195
19190
19185
19180
19175
19170
19165
19160
19155
19150
19145
19140
19135
Optical
Frequency
f
c
(THz)
193.00
192.95
192.90
192.85
192.80
192.75
192.70
192.65
192.60
192.55
192.50
192.45
192.40
192.35
192.30
192.25
192.20
192.15
192.10
192.05
192.00
191.95
191.90
191.85
191.80
191.75
191.70
191.65
191.60
191.55
191.50
191.45
191.40
191.35
Wavelength
(Vacuum)
λ
c
(nm)
1553.33
1553.73
1554.13
1554.54
1554.94
1555.34
1555.75
1556.15
1556.56
1556.96
1557.36
1557.77
1558.17
1558.58
1558.98
1559.39
1559.79
1560.20
1560.61
1561.01
1561.42
1561.83
1562.23
1562.64
1563.05
1563.46
1563.86
1564.27
1564.68
1565.09
1565.50
1565.90
1566.31
1566.72
PANDA is a trademark of Fujikura Ltd.
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.
10143085 Rev. 002 01/04
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