datasheet | march 2013 fiber optics | rev 2013.03 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 1310 nm forward path/return path broadcast and narrowcast networks long distances high optical splits features oc-48 pinout compatible telcordia ? technologies 468 compliant 79 channel count up to 31 mw wide temperature range ? stable even in harsh environments the 1612a/b 1310 nm forward path dfb laser modules are designed for both broadcast and narrowcast analog applications. the highly linear oc-48 pinout compatible devices feature options up to 31mw of minimum optical output power with superior distortion performance over an enha nced temperature range of -40? c to +85? c. performance highlights min typical max units wavelength 1300 - 1320 nm optical output power (multiple versions) 4-31 - - mw temperature range -40 - +85 ? c frequency range 5 - 1002 mhz carrier to noise ratio 51 - - db composite second order (multiple versions) 55-60 - - db composite triple beat 65 - - db 1612a/b 1310 nm dfb laser module
datasheet | march 2013 fiber optics | rev 2013.03 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 stresses in excess of the absolute maximum ratings can cause permanent damage to the device. these are absolute stress ratings only. functional operation of the device is not im plied at these or any other conditions in excess of those given in the operational sections of the data sheet. expos ure to absolute maximum ratings for extended periods can adversely affect device reliability. parameter symbol condition min max unit operating temperature range t c continuous -40 +85 c storage temperature range t stg - -40 +85 c laser forward dc current - - - 150 ma photodiode reverse voltage v rpd - - 10 v laser reverse voltage, dc - - - 1 v esd - hbm: r = 1500 ohm, c = 100pf -500 500 v tec current i tec continuous -1.9 1.9 a electrical/optical characteristics laser temperature (tl) = 25 o c, i f =i op , beginning of life (bol) parameter symbol condition min typ max unit wavelength - - 1300 - 1320 nm optical output power - 1612-xxxx-04 version see ordering page for options 1612-xxxx-31 version 4 . 31 - - - - mw mw optical isolation iso - 30 - - db optical return loss orl tc 40 - - db sidemode suppression ratio smsr - 35 - - db threshold current i th - - - 20 ma operating current i op varies with power option - - 120 ma monitor pd responsivity r pd v rm =5v 10 - 200 a/mw thermistor resistance r th t op =25 ? c 9.5 10 10.5 kohm thermistor temp. coefficient tc th t op =25 ? c - -4.4 - %/ ? c tec current i tec -40 datasheet | march 2013 fiber optics | rev 2013.03 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. rf characteristic parameter symbol condition min typ max unit frequency range f - 5 - 1002 mhz frequency response s21 i f = 60 ma, 5 mhz-1002 mhz - - 0.75 db carrier-to-noise ratio cnr - 51 - - db comp. second order, 1612a cso 4, 6, 8 mw options ? 10 mw options 55 57 - - - - db db comp. second order, 1612b cso - 60 - - db composite triple beat, 1612a/b ctb - 65 - - db relative intensity noise rin - - <-155 - db/hz omi = 3.7% for 79ch ntsc in order to prevent reflection-induced distortion, the laser mu st be connected to an optical ca ble having a return loss of at least 55 db for discrete reflections and 30 db for distributed reflections. outline drawing (dimensions are in inches & mm) 1612a/b 1310 nm dfb laser module
datasheet | march 2013 fiber optics | rev 2013.03 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 schematics pin definitions pin description 1 thermistor 2 thermistor 3 dc laser bias (-) 4 mpd anode (-) 5 mpd cathode (+) 6 thermal electric cooler (+) 7 thermal electric cooler (-) 8 case ground 9 case ground 10 nc 11 laser common (+) 12 laser modulation (-) 13 laser common (+) tec isol ator 10k 12nh 100 ld mpd es d (-) (+) (-) (+) (+) 3.3v 0.01uf rf c hoke 1 2 3 4 5 6 7 8 9 10 11 12 13 14 nc case gnd 22 (-) (+) figure 1. 1612a/b laser schematic figure 2. 1612a/b circuit schematic 1612a/b 1310 nm dfb laser module
datasheet | march 2013 fiber optics | rev 2013.03 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. laser safety this product meets the appropriate standard in title 21 of t he code of federal regulations (cfr). fda/cdrh class 1 laser product. this device has been classified with the fda/cdrh under accession number 0220191. all versions of this laser are class 1 laser produc t, tested according to iec 60825-1:2007/en 60825-1:2007 single-mode fiber pigtail with sc/apc connectors (standard). wavelength = 1.3 ? m. maximum power = 50 mw. because of size constraints, laser safety labeling (including an fda class 1 label) is not affixed 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 specified herein may result in hazardous laser radiation exposure. 1612a/b 1310 nm dfb laser module danger invisible laser radiation is emitted from the end of fiber or connector avoid direct exposure to beam do not view beam directly with optical instruments invisible laser radiation emitted from end of fiber or connector avoid exposure to beam class 1 laser product iec-60825-1:20007 max. output:50 mw wavelength: 1.3 ? m danger invisible laser radiation max. output: 50 mw, class 1 laser product avoid direct exposure to beam wavelength: 1.3 ? m
datasheet | march 2013 fiber optics | rev 2013.03 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 1612x ? www ? yy ? zz family name analog 1310 nm, dfb, laser distortion performance x = a standard performance x = b enhanced performance (cso) frequency plan www = 079: 79 channel ntsc optical connector yy = fc: fc/apc yy = sc: sc/apc yy = no: no connector 1612a/b 1310 nm dfb laser module minimum optical power zz = 04: 4 mw zz = 16: 16 mw zz = 06: 6 mw zz = 20: 20 mw zz = 08: 8 mw zz = 22: 22 mw zz = 10: 10 mw zz = 25: 25 mw zz = 13: 13 mw zz = 31: 31 mw example 1612a-079-sc-10: dfb 1310 nm, standard performance, 79 channel ntsc, sc/apc connector, 10mw
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