V23845-Lxy(*)21-z(**)113 1.55 m DFB LD Module for WDM Direct modulated 2.5 Gbit/s, 3400 ps nm, 2 mW Preliminary Dimensions in mm 7.38 15.24 2.540.2 PIN 1 key 0 -5 Connector ( 0.9) 2-2.60.3 8.9 0.3 12.7 PIN 14 7 A 5.6 15.2 431 14-0.510.1 Front view of the ferrule from A 6.1 17.8 4.6 2 20.8 260.3 L 37 max 1000 +200 0 30 0.250.1 0.30.1 L CASE LD a) Tolerances unless noted 0.5 FEATURES * Input impedance is 25 * Distributed feedback (DFB) Laser Diode * Emission wavelength is the 1.55 m band * Long haul transmission (+3400 ps/nm dispersion) * Single mode optical fiber pigtail * Built-in optical isolator * Built-in thermal electrical cooler * Butterfly package PIN 1 PD Thermistor 5.6 8.9 5.2 Thermo cooler PIN 7 PIN 8 R PIN 14 Pin Description Pin# Description 1 Thermistor 2 Thermistor 3 LD BIAS (-) 4 PD Anode 5 PD Cathode 6 Cooler Anode Absolute Maximum Ratings 7 Cooler Cathode Operating case temperature (TC)........................... -20 to +70C Storage temperature (Tstg) .................................... -40 to +85C 8 GND 9 GND Laser diode 10 NC Optical output power (PF)..................................................6 mW Forward current (IF) ........................................................ 150 mA Reverse Voltage (VF) .............................................................. 2 V 11 LD Anode, GND 12 LD RF Photo diode 13 LD Anode, GND Reverse voltage (VRD).......................................................... 20 V Forward current (lFD) ..........................................................2 mA 14 NC Thermo-electric cooler(1) Cooler current (Ipe) ............................................................. 1.3 A Cooler voltage (Vpe) ............................................................3.1 V Note * see Table 1, p. 3 1. Even if the thermo-electric cooler (TEC) is operated within the rated conditions, uncontrolled current loading or operation heatsink may easily damage the module by exceeding the storage temperature range. Thermistor resistance should be properly monitored by the feedback circuit during TEC operation to avoid the catastrophic damage. **Connectors available C = SC / PC F = FC / PC P = bare Fiber Fiber Optics OCTOBER 1999 Electro-Optical Characteristics Item Symbol Condition Threshold current Ith CW Optical output power at threshold current Pth Min. Typ. Max. Units 10 25 mA 100 W Operating current Iop CW, PF=2 mW 40 65 mA Operating voltage Vop CW, PF=2 mW 1.3 1.8 V PF=2 mW 25 Input impedance Zin Light-emission central wavelength(1)(2) C Central wavelength drift with case temp. C/TC Laser operating temperature Tset Spectral width(1) Side mode suppression ratio(1) CW, If=Ith nm TC=-20~70C -1 0 pm/C 20 35 C 0.4 nm -20 dB 0.2 Sr 33 Dispersion penalty(1) Pp at 10-10 BER, +3400 ps/nm PF=2 mW Cut off frequency (-1.5dB optical) fc Rise and fall time(1) (10~90%) tr, tf Relative intensity noise Nr CW, PF=2 mW, 0.5~3 GHz error(3) Er TC=-20~70C, APC, ATC Differential efficiency CW, PF=2 mW Linearity(4) Tracking 40 dB 2 3.5 0.057 GHz 150 psec -155 -145 dB/Hz 0.5 dB 0.07 0.15 mW/mA CW, PF=0.2~2.4 mW -20 20 % Monitor current Imon CW, PF=2 mW, Vrd=5 V 0.1 2 mA Optical isolation Iso TC=25C 35 TC=-20~70C 23 Dark current Id VRD=5 V, TC=-20~70C 0.1 A Capacitance Ct VRD=5 V, f=1 MHz 10 pF dB Notes 1. 2.48832 Gb/s NRZ, 223-1, Pf_ave=1 mW, extinction ratio 10 dB, optical return loss of the connectors should be greater than 40 dB in order to ensure the specified performance. 2. See Table 1 3. Er=max | 10*log (Pf/Pf@25C) 4. Variation of the differential efficiency from the straight line between 0.2 mW and 2 mW. Thermal characteristics (Tld=Tset, TC=-20~70C) Fiber Pigtail Specifications Item Specification Type SM Unit m Item Symbol Condition Min. Typ. Max. Units Thermistor resistance Rth 10.5 B constant of Rth B Tld=25C 9.5 10 k Mode field diameter 9.51 Cladding diameter 1252 Secondary coating outer diameter 0.90.1 mm Cooling capacity T PF=2 mW TC=70C 40 (min) dB Cooler current Ipe PF=2 mW 0.6 1 A PF=2 mW 1.2 2 V Connector(1) Optical return loss of connector 3950 K 50 C TC=70C Tld=Tset Note 1. No connector or FC/PC or SC/PC Cooler voltage Vpe TC=70C Tld=Tset Fiber Optics 1.55 m DFB LD Module for WDM, Direct modulated 2.5 Gbit/s, 3400 ps nm, 2 mW 2 DOCUMENTATION * Fiber output power vs. Laser forward current at Tld=Tset and TC=20, 25, 70C * BER curves at 2.48832 Gb/s modulation * Threshold current (Ith) * Laser forward current (Iop) at PF=2 mW * Laser forward voltage (Vop) at PF=2 mW * Laser operating temperature (Tset) at C(1) * Monitor current (Imon) at PF=2 mW * Thermistor resistance (Rth) * Cooler current (Ipe) at PF=2 mW and TC=70C * Cooler voltage (Vpe) at PF=2 mW and TC=70C Note 1 Tset is attached as a reference data. Rth should be used in order to tune the wavelength to the specified value accurately. *Table 1 c (nm) x y c (nm) x y c (nm) x y 1529.55 0 9 1541.35 3 9 1553.33 6 9 1530.33 1 1 1542.14 4 1 1554.13 7 1 1531.12 1 3 1542.94 4 3 1554.94 7 3 1531.90 1 5 1543.73 4 5 1555.75 7 5 1532.68 1 7 1544.53 4 7 1556.55 7 7 1533.47 1 9 1545.32 4 9 1557.36 7 9 1534.25 2 1 1546.12 5 1 1558.17 8 1 1535.04 2 3 1546.92 5 3 1558.98 8 3 1535.82 2 5 1547.72 5 5 1559.79 8 5 1536.61 2 7 1548.51 5 7 1560.61 8 7 1537.40 2 9 1549.32 5 9 1561.42 8 9 1538.19 3 1 1550.12 6 1 1562.23 9 1 1538.98 3 3 1550.92 6 3 1563.05 9 3 1539.77 3 5 1551.72 6 5 1563.86 9 5 1540.56 3 7 1552.52 6 7 All wavelengths are referred to vacuum. Tolerance is c0.05 nm. Published by Infineon Technologies AG Warnings (c) Infineon Technologies AG 1999 All Rights Reserved Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your Infineon Technologies offices. 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