dat asheet | august 2012 fiber op tics | r ev 201 2.0 8 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. applications vide o si gna l dis t ri buti on in hfc and fttx nodes sign al dis t ri buti o n in l-ban d a nd wi re l e ss re mo ting l i n ks high lin eari ty , lo w power fi ber lin k s features lin ear dfb las er des i gn ouput p o wer up t o 10 db m av ail abl e bandwi d th 5 ? 4 0 0 0 mhz rohs compliance singl e a n d doub le optic a l is olat or high sl op e eff i c i e n c y up to 0.3 m w/ ma mon i tor p hot od iod e emco re?s model 19 55 dfb lasers of fer a low cost solution for li near fibe r opti c links. these compon ents can be coole d with external thermo -ele ctri c co olers for high stability, or run without tec?s to r educe power consum ption. t he dfb laser build s upon ortel?s lo ng hi story of high perfo rman ce, leading e dge desig ns in catv, wirel e ss, an d high spe ed digital appli c ation s . the laser di o de devices a r e packa ged in a comp act he rmetic a s sem b ly together with monito r photodi ode a nd isolato r , for flexible integra t ion into vario u s tran smitte r configu r ation s . performanc e highlights parameters min typical max units oper ating case temper ature ra nge -40 - 85 ? c optical output power (1) 3 5 6 9 10 - - - - - 4.9 5.9 8.9 9.9 11.9 dbm freque nc y ra ng e 5 - 4000 mhz carrier -to-noise ratio (79 channels) (1) 51 - - db composite second or der (79 cha nnels) (1 ) standa rd linearit y enhanc ed linearit y - - - - -55 -57 dbc composite tripl e beat (79 chan n els) (1 ) standard linearity enhanc ed linearit y - - - - -65 -68 dbc optical return l o ss (1 ) 45 - - db side mode supp ression ratio, cw (1 ) 30 - - db 1. performa n c e at tcase = 25c 1955 f/r/w coaxial dfb laser diode 1550 nm cwdm 5 mhz ? 4000 m h z http://
dat asheet | august 2012 fiber op tics | r ev 201 2.0 8 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. absolute maximum ratings 1 stresse s in e x cess of the absolute max i mum rating s can cau s e p e r man ent dam age to the de vice. the s e a r e ab solute stress rating s only. functio nal op eration of the device i s not implied at the s e or a n y other co ndition s in exce ss of those given in th e operational section s of the data she e t. exposu r e to absolute max i mum rating s for extended perio ds can a d versely affect device reliabil ity. parameters sy mbol condition/notes min max unit storage tempe r ature t st g non- oper ating -40 85 o c operating case temperature t op continuous -40 85 o c laser diode f o r w ard cur r ent i op cw - 150 ma laser diode re verse voltage v r continuous - 1.0 v photodiode fo r w a r d cu rre nt i mpd continuous - 2 ma photodiode reverse voltage v mpd,r continuous - 10 v average rf inp u t po w e r pin 60 seconds - 62 dbmv lead soldering temperature/time - - - 260/10 o c/sec relative humidit y rh continuous - 85 % esd - human body model -500 +500 v 1. absolute m a ximum data are limited to system d e sig n onl y; prope r device pe rformance is not guarantee d o v er rating listed above. operation beyond the s e maximum co ndition s may degrade d e vice pe rform a n c e, lead to de vice failure, shorter lifetime, and will i n validate the device warra n ty. electrical/optical characteristics parameters sy mbol conditions/notes min ty p max unit optical output p ower p o 1955R opt model: 3-6dbm 1955w opt mode l: 3-10 dbm 1955f opt model : 3-10 dbm 3 5 6 9 10 - - - - - 4.9 5.9 8.9 9.9 11.9 dbm threshold cu rre nt i th t cas e = 25 oc t case = 45 oc - - 8 13 15 20 ma laser bias curr ent i op - - 80 ma for w a r d voltage v f i op - 1.17 1.8 v slope efficiency se t cas e = 25 oc, i op 0.07 - 0.3 mw/ma ? thermal slope efficiency tse se(tc)/se(25oc) t case = -20oc to 85 oc 0.4 - 1.2 - ? laser input imp edance z - 2 4 8 ?? mpd cur r ent i mpd v mpd = 5v, i op 50 - 2000 ? a mpd dark curre nt i d v mpd = 5v, i op = 0 t case = 25oc - - 50 na relative intensity noise rin cw, i op , t case = 25oc 5 mhz - 1002 mhz - - -150 db/hz 1955 f/r/w coaxial dfb laser diode 1550 nm cwdm 5 mhz ? 4000 mhz
dat asheet | august 2012 fiber op tics | r ev 201 2.0 8 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. electrical/optical characteristics (continu e d) parameters symbol conditions/notes min typ max unit tracking error pf i mon = const er = 10log(p o /2.0) [db] -1 - +1 db optical isolation, t case = 25oc iso double isolator single isolator 45 30 - - - - db spectral width (-20 db) ?? i op - 0.1 1.0 nm side mode suppression ratio smsr i op 30 45 - db optical return loss orl t case = 25oc 35 - - db rise time tr t case = 25oc - 0.05 0.10 ns fall time tf t case = 25oc - 0.10 0.15 ns extinction ratio er 10log (2.omw/pf (ith)) 10 - - db 1. refere nce d to base of t o head er. forw a rd pa th rf characteristics 1955f performance parameter symbol conditions/notes min typ max unit frequency response flatness 1 |s 21 | 47 mhz ? 1002 mhz 5 mhz ? 4000 mhz - - - - 1 4 db p-p response up-tilt 1 47 mhz < f < 1002 mhz -1 3 db carrier-to-noise ratio 2,3,4 cnr i op 51 - - db composite second order 2,3,4 standard linearity enhanced linearity cso i op t case = 25oc - - - - -55 -57 dbc composite triple beat 2,3,4 standard linearity enhanced linearity ctb i op t case = 25oc - - - - -65 -68 dbc 1. i op , t cas e = 25 ? c. test wi th the laser in put pin match ed to a 50 ? sys tem. 2. 3.7% omi, 79 nts c un modulate d ca rrie r s (50 m h z to 550 m h z). 10 km fibe r. 3. received p o we r = 0 db m. 4. i op , t case = 25 ? c. test wi th the laser in put pin match ed to a 75 ? sys tem. return path rf chara c teristics 1955R performance parameters symbol conditions/notes min typ max unit frequency response flatness 1 |s 21 | 5 mhz - 200 mhz - - 1 db p-p second order distortion 2 standard linearity enhanced linearity dso p f = 3 dbm, omi = 10% each 2-tone test: f1=13mhz, f2=19mhz 20 km of fiber (7.5 db total loss w i th connecto r) dso meas at 6mhz, 32mhz - - - - -45 -50 dbc third order distortion 2 standard linearity enhanced linearity dtb p f = 3 dbm, omi = 10% each 2-tone test: f1=13mhz, f2=19mhz 20 km of fiber (7.5 db total loss w i th connecto r) dto meas at 7mhz, 25mhz - - - - -63 -65 dbc 1. i op , t case = 25 ? c. test wi th the laser in put pin match ed to a 50 ? sys tem. 2. i op , t case = 25 ? c. test with laser input pin matched to a 75 ? system. 1955 f/r/w coaxial dfb laser diode 1550 nm cwdm 5 mhz ? 4000 mhz
dat asheet | august 2012 fiber op tics | r ev 201 2.0 8 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. wide bandw idth path rf characteristics 1955w performance parameters symbol conditions/notes min typ max unit frequency response flatness 1 |s 21 | 900 mhz ? 4000 mhz - - 4 db p-p input third order intercept 2 iip3 standard linearity, i bb 30 - - dbm 1db compression point 3 p 1db i bb 16 - - dbm 1. i op , t case = 25 ? c. test wi th the laser in put pin match ed to a 50 ? sys tem. 2. iip3 is measured at i bb where i bb is the bias poi nt at whi c h sim u lta neou sly t he lase r at its be st linearity an d the optical power is withi n spe c ificatio n. test fre q u ency f1 = 27 00mhz, f2 = 2703m hz, rf in = 0dbm/frequ en cy. 0km fiber. 3. test at 270 0mhz. 0km fi ber. package outline drawing (dimensions are in mm) mounting bracket 1955 f/r/w coaxial dfb laser diode 1550 nm cwdm 5 mhz ? 4000 mhz
dat asheet | august 2012 fiber op tics | r ev 201 2.0 8 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. reliability / quality de sign ed to meet qualificati on req u ire m ents of tel c ordia tm (bellc ore ) gr -46 8 - c o r e. schematic and pinout schematic and pinout a pin definitions for pin out a laser safety this p r od uct meets the ap prop riate stan dard in title 2 1 of t he code of federal regulatio ns (cfr). f d a/cdrh cla ss 1 la ser prod uct. thi s device h a s b een cl assified with the fda / cdrh u nde r accessio n nu mber 0 220 19 1. all version of this laser a r e cla ss 1 la se r prod uc t, teste d according t o iec 60825 -1:2007/en 6 0 825-1:200 7 single-m ode fiber pigtail wi th sc/apc conne ctors (st anda rd ). wavele ngth = 1.3 ? m. maximum power = 50 m w . becau s e of si ze con s traint s, lase r safety labeling (in c luding a n fda class 1 lab e l) is not affixed to the mod u le, but attached to the outside of the shippi ng ca rton. pr odu ct is not shippe d with p o we r su pply. cau t ion: us e of con t rols , adjustments and proc e dures o t her than tho se s pecified he r e in ma y result in hazard o us laser radia t ion expos ure . pin des c ription 1 ld anode, c a se ground 2 ld cathod e 3 pd cathode 4 pd anode 1955 f/r/w coaxial dfb laser diode 1550 nm cwdm 5 mhz ? 4000 mhz 1 2 3 4 pd ld pinout a 1 2 3 4 pd ld p i n out a bottom view
dat asheet | august 2012 fiber op tics | r ev 201 2.0 8 information contained herein is deemed reliable and accurate as of the issue date. emcore reserves the right to change the desi gn or specification at any time without notice. ordering code definitions 1955x - a - bb - c - dddd - ww - yy - z example 1955f -b-di-a-1 550 -sa-1 0 -n : fo rward path uncoole d 1550 nm cwdm coaxial lase r , enha nce d line arit y, double isol ator, pinout a, 1550 nm, sc/apc optical co n necto r, 10 db m optical po wer, no mou n ting bra c ket. 1955 f/r/w coaxial dfb laser diode 1550 nm cwdm 5 mhz ? 4000 mhz family name 1955f: forward path 1955R: return path 1955w: wide bandwidth pinout c = a: pinout a distor tion p e rforma nce a = a: standard line arity a = b: enhanced linearity ( not available for 1955w ) fiber leng th , optical co nnec t or ww = fa: fc/apc, 900 micron buffer, 1.0 ? 1.4 meter ww = sa: sc/apc, 900 micron buffer, 1.0 ? 1.4 meter optical ou tp ut po w e r yy = 03: 3 dbm (2 mw) yy = 05: 5 dbm (3 mw) yy = 06: 6 dbm (4 mw) yy = 09: 9 dbm (8 mw) ? ( only available for 1935f and 1935w ) yy = 10: 10 dbm (10 mw) ? ( only available for 1935f and 1935w ) mounting br acke t z = b: mounti ng bra c ket z = n: no mounting bracket optical isola t or bb = di: double isolator ( only available for optical 3 ? 6dbm ) bb = si: single isolator o-band wav e length dddd = 147 0:1470 nm dddd = 159 0:1590 nm dddd = 149 0:1490 nm dddd = 161 0:1610 nm dddd = 151 0:1510 nm dddd = 153 0:1530 nm dddd = 155 0:1550 nm dddd = 157 0:1570 nm
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