Document
1,550nm DWDM Direct Modulation DFB Laser
www.DataSheet4U.com
FLD5F15CX-A
FEATURES
• Direct Modulated DFB Laser for WDM systems • Optimized for Long Distance Transmission (Dispersion 3200ps/nm) • Peak wavelength 1527.99 to 1563.05nm (C Band: 191.8 to 196.2THz, 100GHz spacing) • Output Power: 10mW • 14-pin Butterfly type package • Power monitor PIN-PD (InGaAs), Thermistor, cooler • Built-in optical isolator • Single mode fiber
APPLICATIONS
This laser is intended for the application of 2.5 Gb/s long haul Dense Wavelength Division Multiplexing (DWDM). Transmission spans of 3200ps/nm are possible.
DESCRIPTION
This high power laser is capable of 2.5 Gb/s transmission. It is packaged in a “butterfly” type module. The module employs a high efficiency optical coupling system, coupling the laser output through a built-in optical isolator into a single mode fiber pigtail. The module also includes a monitor photodiode, a thermoelectric cooler (TEC), and thermistor. This device is designed for use in DWDM direct modulation transmission systems. Selected wavelengths specified to the ITU-T grid are available. ABSOLUTE MAXIMUM RATINGS (Tc=25°C, unless otherwise specified)
Parameter Storage Temperature Operating Case Temperature Optical Output Power LD Forward Current LD Reverse Voltage Photodiode Reverse Voltage Photodiode Forward Current Cooler Voltage Cooler Current Thermistor Temperature Lead Soldering Time Environmental Operating Humidity Environmental Storage Humidity Symbol Tstg Top Pf IF VR VDR IPF Vc Ic Tth Tsold Xop Xst Condition Min. CW CW Cooling Heating Cooling Heating ATC Operation 260°C Top<30°C Tstg<30°C -40 -20 -2.5 -0.9 -20 Ratings Max. +85 +70 12.0 150 2 20 10 2.5 1.4 +70 10 95 95 °C °C mW mA V V mA V A °C sec % % Unit
Edition 1.1 July 2004
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FLD5F15CX-A
Parameter Laser Set Temperature Threshold Current Forward Voltage Series Resistance Optical Output Power Slope Efficiency Threshold Power Tracking Error (Note 1) Monitor Current Photodiode Dark Current Photodiode Capacitance Photodiode Cutoff Peak Wavelength Wavelength Drift Wavelength Stabilty with Case Temperature Side Mode Suppression Spectral Width (-20dB) Rise/Fall Time Cutoff Frequency RF Return Loss Symbol Tset Ith VFDC Rs Pf η Pth TE Im ID Ct fcm λp ∆λ dλ/dTc Sr δλ Tr, Tf fc S11 Conditions CW
1,550nm DWDM Direct Modulation DFB Laser
Limits Typ. 1.6 25 2 Note (4) -100 -1.0 35 3.5 8 6 3 40 +100 +1.0 0.3 0.125 -
www.DataSheet4U.com OPTICAL AND ELECTRICAL CHARACTERISTICS (TL=Tset, Tc=25°C, BOL, unless otherwise specified)
Min. 20 4 22 10.0 0.14 -0.5 0.25 100
Max. 35 40 1.75 28 150 +0.5 2.5 100 10 -
Unit °C mA V Ω mW mW/mA µW dB mA nA pF MHz nm pm pm/°C dB nm nsec GHz dB dB dB
CW, IF=30 mA, pin 12, 13 CW, pin 12, 13 CW CW, Pf=10mW CW, IF=Ith Im-APC, Tc=-20 to 70°C CW, Pf=10mW, VDR=5V VDR=5V VDR=5V, f=1 MHz VDR=5V, 50Ω load Note (2) Note (2), after 20 years Tc=-20 to +70°C Note (2) Note (2) 20% to 80% Pf=10mW, -3 dB f=50 MHz to 2 GHz f=2 GHz to 3 GHz f=3 GHz to 5 GHz
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1,550nm DWDM Direct Modulation DFB Laser
FLD5F15CX-A
www.DataSheet4U.com OPTICAL AND ELECTRICAL CHARACTERISTICS (TL=Tset, TL: Laser Temperature, Tc=25°C, BOL, unless otherwise specified) Limit Test Conditions Parameter Symbol Min. Typ.
Max. 1.0 2.4 2.4 10.5 3630 -140
Unit A V W kΩ K dB dB/Hz -
Cooler Current Cooler Voltage Cooler Power Thermistor Resistance Thermistor B Constant Optical Isolation Relative Intensity Noise Kink Power Penalty
Ic Vc Pc Rtr B Is RIN Kns PP Tc=-20 to 70°C f=2.5 GHz Pf=10 mW, ORL=24 dB up to 12mW Note (2) TL=25°C TL=Tset, Pf=10mW, Tc=70°C
9.5 3270 25 -
10.0 3450 35 No Kink
-
-
2.0
dB
Note 1. TE=10*log{Pf(Tcase)/Pf(Tc=25°C)} (dB) Note 2. 2.5 Gb/s NRZ, Ppeak=10.0mW, Rext=8.2dB, PRBS=223-1, Note 3. Bit rate=2.48832 Gb/s, PRBS=223-1, Dispersion=3200ps/nm, Ppeak=10mW, Rext=8.2dB (min.) Receiver: Eudyna Standard Receiver Note 4. The selected wavelengths available are listed in Fig. 8
Fig. 1 Forward Current vs Output Power
Fig. 2 Frequency Response
12 TL = 25°C Relative Output (dB) Output Power, Pf (mW) 10 9 6 3 0 -3 -6 -9 -12 0 0 1 2 3 4 5 Pf=10mW
5
0
30
60
90
Frequency (GHz)
Forward Current, If (mA)
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FLD5F15CX-A
www.DataSheet4U.com Fig. 3 RF Return Loss
1,550nm DWDM Direct Modulation DFB Laser
Fig. 4 Cooler Voltage -Current
30 20 Return Loss (dB) 10 0 -10 -20 -30 0 1 2 3 4 5
3.0
3.0 2.0 Vc Ic 1.0 0.0 -1.0 80 Cooler Current (A)
Cooler Voltage (V)
2.0 1.0 0.0 -1.0
0
10
20
30
40
50
60
70
Case Temperature (°C)
Frequency (GHz)
Fig. 5 Spectrum
10 0 Relative Intensity (dB)
Fig. 6 Temperature Dependance of Wavelength (ACC Operation) 1554 Wavelength (nm) 1553 1552 1551 1550 10
-10 -20 -30 -40 -50 -60 1540 1550 1560
20
30
40
Wavelength λ (nm)
Laser Temperature, TL (°C)
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1,550nm DWDM Direct Modulation DFB Laser
www.DataSheet4U.com
FLD5F15CX-A
Fig. 7 Transmission Characteristics
10-4
2.5Gb/s, NRZ, PRBS=223-1, Pave=7dBm, Rext ≥ 9dB, Dispersion penalty ≤ 2dB@10-10
Back to Back After Transmission (3200ps/nm)
Bi.