Document
1,550nm Continuous Wave DFB Laser
FEATURES
• Continuous Wave (CW) Light Source for DWDM System • Output Power: 10mW • Available at C-band ITU-T Wavelengths between
1527.99 to 1562.05nm • Built-in TEC, Thermistor, Monitor PIN PD and Optical Isolator • Polarization maintaning (PANDA) fiber
FLD5F6CX-H
APPLICATIONS
2.5 and 10 Gb/s Long Haul DWDM Transmission Systems
DESCRIPTION
The laser is for a high power (10mW) CW operation, at selected C-band ITU-T grid wavelengths.
The module includes an optical isolator monitor photodiode, thermistor and a thermo-electric cooler.
This laser is designed for use with external modulation components (such as LiNbO3 modulators). The device comes in “butterfly” type, 14-pin package, and operates between -20 to 70°C.
ABSOLUTE MAXIMUM RATINGS (Top=25°C, unless otherwise specified)
Parameter
Symbol
Condition
Rating
Min.
Max.
Storage Temperature Operating Case Temperature Optical Output Power LD Forward Current LD Reverse Voltage
Tstg Top Pf IF VR
CW CW CW
-40 +85 -20 +70
- 15 - 150 -2
PD Forward Current - -
- 10
PD Reverse Voltage
VDR
-
- 20
Cooler Voltage
Cooling Vc Heating
- +2.5 -2.5 -
Cooler Current
Ic Cooling
- +1.4
Heating
-0.9 -
Thermistor Temperature
Tth ATC Operation
-20
+70
Lead Soldering Time
- 260°C
Note 1: Heatsink thickness shall be 10mm min. (refer to note on thermal precaution).
- 10
Unit
°C °C mW mA V mA V
V
A
°C
sec
Edition 1.1 July 2004
1
FLD5F6CX-H
1,550nm Continuous Wave DFB Laser
OPTICAL AND ELECTRICAL CHARACTERISTICS (TL=Tset, Tc=25°C, BOL, unless otherwise specified)
Parameter Laser Set Temperature Optical Output Power
Symbol
Tset Pf
Test Conditions -
CW, Tc=-20 to +70°C
Min. +20
10
Limits Typ.
-
-
Max. +35
-
Unit °C mW
Threshold Current
Ith CW
3 - 40 mA
Forward Voltage
VF CW, IF=30 mA, pin 3,13
-
- 1.5 V
Slope Efficiency
η
CW, Pf=10mW, ORL>40dB
0.09 0.16
- mW/mA
Operating Current Peak Wavelength
Iop CW, Pf=10mW
λp
CW, Pf=10mW, ORL>40dB
- - 110 mA
Note (4)
nm
Wavelength Drift
Wavelength Stability with Case Temperature
-
after 20 years -
-0.2 - 0.2 nm - - +/-1 pm/°C
Spectral Width (-3dB)
∆λ CW, Pf=10mW, ORL>40dB
- 8 50 MHz
Side Mode Suppression
Monitor Current Monitor Dark Current Monitor Capacitance
Tracking Error (Note 2)
Sr
CW, Pf=10mW,
30 33 -
dB
ORL>40dB
Im
Pf=10mW
0.04 - 1.0 mA
Idm VPD=5V
- - 100 nA
Ct VPD=5V, f=1 MHz
- - 10 pF
Im=constant,
TE Pf(Tc=25°C)=10mW, Tc=-20 to +70°C
-
- +/-0.5 dB
Optical Isolation Polarization Extinction Ratio
Relative Intensity Noise
S22 PER
RIN
Tc=-20 to +70°C
CW, Pf=10mW
CW, Pf=10mW, ORL>40dB, f=0.5GHz
25 20
-
- - dB - - dB
- -157 dB/Hz
Cooler Current Cooler Voltage Thermistor Resistance
Ic
TL=Tset, Tc=+70°C, Pf=10mW
-
- 1.0 A
Vc
TL=Tset, Tc=+70°C, Pf=10mW
-
- 2.4 V
Rth TL=25°C 9.5 10.0 10.5 kΩ
Thermistor B Constant (Note 2) B
-
3,270 3,450 3,630
K
Note 2. TE=10*log[Pf(Tc)/Pf(25)] Note 3. Relation between resistance and temperature (°K) is:
Rth (T) = R.