data sheet january 1999 D372-type digital uncooled dfb fastlight laser module for 2.5 gbits/s applications the low-pro?e D372-type laser module is ideally suited for oc-48 sonet and other high-speed digital applications. features n 8-pin package suitable for sonet applications n narrow linewidth distributed feedback multiquan- tum-well (dfb-mqw)1.3 m m laser with single- mode ?er pigtail n wide operating temperature range: ?0 c to +85 c n no tec required n high output power: typical 2.0 mw peak power coupled into single-mode ?er n hermetically sealed active components n internal back-facet monitor n built-in thermistor and bias t n 25 w input impedance n internal isolator n quali?ation program: bellcore ta-983 applications n sonet oc-48/stm-16 systems n telecommunications n secure digital data systems bene?s n easily board mounted n gull wing leads n no additional heat sinks required n low-cost alternative to industry-standard, 14-pin isolated laser module (ilm) n highly ef?ient dfb-mqw laser structure allows for lower threshold and drive currents, and reduced power consumption description the D372-type uncooled laser module consists of a laser diode coupled to a single-mode ?er pigtail. the device is available in a standard, 8-pin con?u- ration (see figure 1 and/or table 1) and is ideal for long-reach (sonet) and other high-speed digital applications. the module includes a narrow linewidth (<1 nm) dfb-mqw single-mode laser and an ingaas pin photodiode back-facet monitor in a hermetically sealed package. this package is optimized for a 25 w input imped- ance and allows for dc biasing through an internal bias t. a thermistor has been included for feedback to board-level bias circuitry, if needed.
D372-type digital uncooled dfb data sheet fastlight laser module for 2.5 gbits/s applications january 1999 2 2 lucent technologies inc. description (continued) the device characteristics listed in this document are met at 2.0 mw output power. higher- or lower-power operation is possible. under conditions of a ?ed photodiode current, the change in optical output is typi- cally 0.5 db over an operating temperature range of ?0 c to +85 c. this device incorporates the new laser 2000 manufac- turing process from the optoelectronic products unit of lucent technologies microelectronics group. laser 2000 is a low-cost platform that targets high-volume manufacturing and tighter product distributions on all optical subassemblies. this platform incorporates an advanced optical design that is produced on one of the highly automated production lines at the opotelectronic manufacturing facility. the laser 2000 platform is quali- ?d for the central of?e and uncontrolled environ- ments, and can be used for applications requiring high performance and low cost. table 1. pin descriptions pin number connection 1 thermistor 2 thermistor, package gnd 3 laser dc bias cathode (? choke 4 photodiode cathode 5 photodiode anode 6 laser diode anode (+) 7 laser rf input cathode (? 25 w 8 laser diode anode (+) figure 1. D372-type digital uncooled dfb mini 8-pin laser module schematic, top view absolute maximum ratings stresses in excess of the absolute maximum ratings can cause permanent damage to the device. these are abso- lute stress ratings only. functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. exposure to absolute maximum ratings for extended periods can adversely affect device reliability. * rating varies with temperature. parameter symbol min max unit maximum peak laser drive current or maximum fiber power* i op p max 150 10 ma mw peak reverse laser voltage: laser monitor v rl v rd 2 20 v v monitor forward current i fd ?ma operating case temperature range t c ?0 85 c storage case temperature range t stg ?0 85 c lead soldering temperature/time 260/10 c/s relative humidity (noncondensing) rh 85 % 1-900.b 56 8 7 43 1 2
data sheet D372-type digital uncooled dfb january 1999 fastlight laser module for 2.5 gbits/s applications 3 lucent technologies inc. handling precautions caution: this device is susceptible to damage as a result of electrostatic discharge (esd). take proper precautions during both handling and testing. follow guidelines such as jedec publication no. 108-a (dec. 1988). although protection circuitry is designed into the device, take proper precautions to avoid exposure to esd. electro/optical characteristics * the slope ef?iency is used to calculate the modulation current for a desired output power. this modulation current plus the threshold current comprise the total operating current for the device. ? corrected for electrical pulse fall time. ?v r = reverse voltage. table 2. electro/optical characteristics (over operating temperature range unless otherwise noted) parameter symbol test conditions min typ max unit operating temperature range t ?0 85 c optical output power p f cw, peak 2 mw threshold current i th t = 25 c t = full range 5 2 11 15 50 ma ma modulation current i mod cw, p f = 2.0 mw, t = 25 c cw, i mon = const.,t = full range 13 7.5 20 33 55 ma slope ef?iency* se cw, p f = 2.0 mw, t = 25 c 61 154 m w/ma center wavelength l c p f = 2.0 mw, cw 1280 1335 nm spectral width (?0 db) dl p f = 2.0 mw 1 nm side-mode suppression ratio smsr cw, p f = 2.0 mw 30 40 db tracking error te i mon = constant, cw 0.5 1.25 db spontaneous emission p th i = (0.9) i th 50 m w rise/fall times t r , t f 10%?0% pulse ? , t = 25 c 0.125 0.150 ns dispersion penalty d p <60 km, 256 ps/nm 1.0 db optical return loss orl cw 18 db forward voltage v f at bias coil 1.1 1.6 v input impedance r 25 w monitor current i mon v r = 5 v 100 1000 m a monitor dark current i d v r = 5 v 10 200 na wavelength tempera- ture coef?ient 0.09 0.1 nm/ c
D372-type digital uncooled dfb data sheet fastlight laser module for 2.5 gbits/s applications january 1999 4 lucent technologies inc. quali?ation information the D372-type laser module is scheduled to complete the following quali?ation tests and meets the intent of bellcore tr-nwt-000468 for interof?e environments and ta-tsy-000983 for outside plant environments. table 3. D372-type laser module quali?ation test plan quali?ation test conditions sample size reference mechanical shock 500 g 11 mil-std-883 method 2002 vibration 20 g, 20 hz?,000 hz 11 mil-std-883 method 2007 solderability 11 mil-std-883 method 2007 thermal shock delta t = 100 c 11 mil-std-883 method 2003 fiber pull 1 kg; 3 times 11 bellcore 983 accelerated (biased) aging 85 c, 5,000 hrs. 25 bellcore 983 section 5.18 high-temperature storage 85 c, 2,000 hrs. 11 bellcore 983 temperature cycling 500 cycles 11 bellcore 983 section 5.20 cyclic moisture resistance 10 cycles 11 bellcore 983 section 5.23 damp heat 40 c, 95% rh, 1344 hrs. 11 mil-std-202 method 103 internal moisture <5,000 ppm water vapor 11 mil-std-883 method 1018 flammability tr357 section 4.4.2.5 esd threshold 6 bellcore 983 section 5.22
data sheet D372-type digital uncooled dfb january 1999 fastlight laser module for 2.5 gbits/s applications 5 lucent technologies inc. outline diagram dimensions are in inches and (millimeters). 39.37 (1000) min (pigtail length) 0.52 (13.21) 1.06 (27.0) min 0.29 (7.37) trademark, code, laser serial number, and/or date code in approximate area shown 0.300 (7.62) 0.100 (2.54) 0.169 (4.30) 0.169 (4.30) 0.20 (5.00) 0.02 (0.50) 0.045 (1.143) 0.17 (4.32) 1.925.e
D372-type digital uncooled dfb data sheet fastlight laser module for 2.5 gbits/s applications january 1999 6 lucent technologies inc. laser safety information class iiib laser product this product complies with 21 cfr 1040.10 and 1040.11. 8.3 m m single-mode pigtail or connector wavelength = 1.3 m m maximum power = 10 mw because of size constraints, laser safety labeling is not af?ed to the module but attached to the outside of the shipping carton. product is not shipped with power supply. caution: use of controls, adjustments, and procedures other than those speci?d herein may result in hazardous laser radiation exposure. danger invisible radiation is emitted from the end of the fiber or connector. avoid direct exposure to the beam. do not view with optical instruments. danger invisible laser radiation avoid direct exposure to beam. indium gallium arsenide phosphide laser 10 mw maximum output @ 1.3 m m class iiib laser product complies with 21 cfr 1040.10 and 1040.11
data sheet D372-type digital uncooled dfb january 1999 fastlight laser module for 2.5 gbits/s applications 7 lucent technologies inc. ordering information * trailing s in code indicates that module contains an isolator. table 4. ordering information device code* comcode p?er connector D372-20as 108088048 2.0 mw sc-pc D372-20bs 108224973 2.0 mw sc-apc D372-20fs 108130469 2.0 mw fc-pc D372-20gs 108332032 2.0 mw fc-apc
D372- t ype digital uncooled dfb data sheet fastlight laser module f or 2.5 gbits/s application s january 1999 for additional information, contact your microelectronics group account manager or the following: interne t : http://ww w .lucent.com/mic r o , or f or optoelectronics in f o r mation, http://ww w .lucent.com/mic r o/opto e-mail: docmaster@mic r o.lucent.com n . america: microelectronics grou p , lucen t t echnologies inc., 555 union boul e v ard, room 30l-15p-ba, allent o wn, p a 18103 1-800-372-2447 , f ax 610-712-4106 (in cana d a : 1-800-553-2448 , f ax 610-712-4106) asia p a cific : microelectronics grou p , lucen t t echnologies singapore pt e . ltd., 77 science p a r k d r i v e , #03-18 cintech iii, singapore 118256 t el . (65) 778 8833 , f ax (65) 777 7495 china: microelectronics grou p , lucen t t echnologies (china) c o ., ltd., a-f2, 23/ f , zao f ong uni v erse building, 1800 zhong shan xi road, shanghai 200233 p . r . china tel. (86) 21 6440 0468 , ext. 316 , fax (86) 21 6440 0652 j a p an: microelectronics grou p , lucen t t echnologies j apan ltd., 7-18, higashi-gotanda 2-chom e , shinag a w a-ku , t ok y o 141, j apan t el . (81) 3 5421 1600 , f ax (81) 3 5421 1700 eu r ope: data requests : mic r oelect r onics g r oup d at aline : t el . (44) 1189 324 299 , f ax (44) 1189 328 148 t echnical inqui r ies : op t oelect r onics marketing : (44) 1344 865 900 (ascot uk) lucen t t echnologies inc . rese r v es the r ight to ma k e changes to the product(s) or in f o r mation contained herein without notic e . no liability is assumed as a result of their use or application . no r ights under a n y patent accompa n y the sale of a n y such product(s) or in f o r mation . fastlight is a trademark of lucent technologies inc. co p y r ight ?1999 lucen t t echnologies inc. all rights rese r v ed j anua r y 1999 ds99-023 l wp (replaces ds98-350 l wp)
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