datasheet | march 16, 2008 for more information on this and other products: contact sales at emcore 626-293-3400, or visit www.emcore.com. features narrow linewidth, < 10 khz available itu wavelengths across the c- band 100 ghz channel spacing 10 mw minimum output power industry standard, high reliability, hermetic 14-pin butterfly package excellent long-term wavelength stability eliminates the need for a wavelength locker back-facet monitor designed to meet telcordia gr-468 qualification standard applications seismic sensor applications interferometry spectroscopy lidar optical test and instrumentation microwave photonics 1792 eccw narrow linewidth cw external cavity laser diode the 1792 eccw series external cavity laser is a cost effective solution for a coherent laser source. the laser is fabricated in a 14-pin hermetically sealed butterfly package that incorporates a bias tee circuit, an integrated thermoelectric cooler (tec), a thermistor, and a back facet monitor photodiode. the 1792 eccw provides substantially lower phase noise and a longer coherence length than other semiconductor lasers, including dfb lasers. the wavelength stability is assured by design, eliminating the need for wavelength lockers and complex feedback control circuits. performance highlights min typical max units minimum optical output power, version a version b 15 10 20 12 - mw optical linewidth, cw, version a version b - - - 25 10 50 khz operating case temperature range -10 - +65 c center wavelength (100 ghz itu grid) 1527 - 1570 nm optical isolation 35 - - db optical return loss 40 - - db side mode suppression ratio, cw 40 - - db relative intensity noise - -155 - db/hz see following pages for complete specifications and conditions.
datasheet | march 16, 2008 emcore corporation 1792 eccw narrow linewidth cw external cavity laser diode absolute maximum ratings 1 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 implied at these or any other conditions in excess of those given in the operational sections of the data sheet. exposure to absolute maximum ratings for extended periods can adversely affect device reliability. parameters symbol condition/notes min max unit storage temperature t stg non-operating -40 85 o c operating case temperature t op continuous -20 75 o c forward current i op cw - 150 ma reverse voltage v r continuous - 2 v photodiode forward current i mpd,f continuous - 2 ma photodiode reverse voltage v mpd,r continuous - 10 v tec current 2 i tec - - 1.8 a tec voltage v tec continuous - 3.5 v fiber bend radius r continuous 35 - mm tensile strength, fiber to case f continuous - 5 n lead soldering time 3 t sold < 260 c - 10 sec package mounting screw torque 4 - - 0.12 m*n operating humidity: non-condensing x op continuous 5 95 % storage humidity: non-condensing x op continuous 5 95 % 1. absolute maximum data are limited to system design only; proper device performance is not guaranteed over rating listed abov e. operation beyond these maximum conditions may degrade device performance, lead to device failure, shorter lifetime, and will invalidate t he device warranty. 2. tec current should not exceed 2.0 a during turn on, and case temperature under any conditions should not change faster than 10 o c/min. 3. soldering iron only; no reflow or dip soldering allowed. 4. see mounting recommendations below.
3 emcore corporation datasheet | march 16, 2008 1792 eccw narrow linewidth cw external cavity laser diode electrical/optical characteristics parameters symbol conditions/notes min typ max unit minimum optical output power p o version a version b 15 10 20 12 - - mw optical linewidth 1,2,3,4 version a, smf version a, pmf version b - - - - 25 25 10 50 50 khz threshold current i th - - - 30 ma laser bias current t op - - - 130 ma forward voltage v f cw, p o = 10 mw - - 2.0 v mpd current i mon cw, p o = 10 mw 0.05 - 0.5 ma mpd tracking error te -10oc < t c < 65oc - - 0.5 db tec set temperature 5 t s specified for every laser 16 - 35 oc center wavelength (100 ghz itu grid) c see itu grid channel numbering table nm wavelength drift with case (-10 to 65 oc) temperature ?? c relative to 25 o c case temperature - - 40 pm wavelength offset from dwdm itu grid ? offset tec temperature at t s - - 80 pm frequency temperature coefficient ? f /? t - - 3.5 5 ghz/oc frequency current coefficient ? f /? - - 200 250 mhz/m a optical isolation - -10oc < t c < 65oc 35 - - db relative intensity noise rin cw, at 200 mhz - -155 - db/hz side mode suppression ratio smsr cw, p o > 1 mw 40 - - db optical return loss orl - 40 - - db tec current i tec t c = 65oc, t op = t s - - 1.5 a tec voltage v tec t c = 65oc, t op = t s - - 3.0 v tec capacity ? t t c = 65oc 50 - - oc thermistor resistance r th t op = t s 9.5 10.0 10.5 k ? thermistor beta constant - - 3891 - k 1. cw, at rated power. 2. lorentzian linewidth measured at ?30 db. 3. gaussian linewidth measured at ?20 db. 4. linewidth measured with self-delayed heterodyne method at t s , i op 5. tec temperature at the recommended value.
4 emcore corporation datasheet | march 16, 2008 1792 eccw narrow linewidth cw external cavity laser diode fiber pigtail specifications parameters conditions/notes min typ max unit fiber type single mode fiber, corning smf-28 tm , or polarization maintaining fiber, fujikura panda * mode field diameter - 9.0 10.4 11 m cladding diameter - 123.5 125.0 126.5 m outer diameter of buffer - - 900 - m length of pigtail - - 2 - m optical connector (see ordering information) * note: pmf versions available in sample quantities only. test data note: the test data above assumes linewidth version b. 0 2 4 6 8 10 12 14 0 102030405060708090100 bias current [ma] 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 output power ld voltage 0 2 4 6 8 10 12 14 0 102030 40 50 60 7080 90100 bias current [ma] 0 20 40 60 80 100 120 140 160 180 output power photomonitor output power (mw) output power (mw) ld voltage (v) mpd current (ma) bias current (ma) bias current (ma) 0 2 4 6 8 10 12 14 0 102030405060708090100 bias current [ma] 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 output power ld voltage 0 2 4 6 8 10 12 14 0 102030 40 50 60 7080 90100 bias current [ma] 0 20 40 60 80 100 120 140 160 180 output power photomonitor output power (mw) output power (mw) ld voltage (v) mpd current (ma) bias current (ma) bias current (ma)
5 emcore corporation datasheet | march 16, 2008 1792 eccw narrow linewidth cw external cavity laser diode outline drawing pin definitions pin no. function pin no. function 1 thermistor 8 not connected 2 thermistor 9 case ground 3 laser dc bias (-) 10 case ground 4 photodetector anode (-) 11 case ground 5 photodetector cathode (+) 12 laser rf cathode (-) 6 tec (+) 13 case ground 7 tec (-) 14 case ground
6 emcore corporation datasheet | march 16, 2008 1792 eccw narrow linewidth cw external cavity laser diode itu grid channel numbering channel wavelength (nm) channel wavelength (nm) channel wavelength (nm) - - 46 1540.56 30 1553.33 - - 45 1541.35 29 1554.13 60 1529.55 44 1542.14 28 1554.94 59 1530.33 43 1542.94 27 1555.75 58 1531.12 42 1543.73 26 1556.56 57 1531.90 41 1544.53 25 1557.36 56 1532.68 40 1545.32 24 1558.17 55 1533.47 39 1546.12 23 1558.98 54 1534.25 38 1546.92 22 1559.79 53 1535.04 37 1547.72 21 1560.61 52 1535.82 36 1548.51 20 1561.42 51 1536.61 35 1549.32 - - 50 1537.40 34 1550.12 - - 49 1538.19 33 1550.92 - - 48 1538.98 32 1551.72 - - 47 1539.77 31 1552.52 - - reliability/quality designed to meet qualification requirements of telcordia tm (bellcore) gr-468-core. handling and mounting 1. the laser should be mounted on a heat sink at least 13 x 35 mm in size with surface finish better than 1 m and flatness better than 25m. it is recommended that the laser be mechanically mounted to the heat sink using m2-3 mm (#2-56) screws. apply torque 0.1-0.11 m*n (0.8-1 lb*in). it is also recommended to use thermally conductive grease between the laser package and heat sink. 2. the fiber pigtail must not be subject to a bend radius below 35mm.the fiber is unable to withstand temperatures in excess of 120 oc without degradation. avoid high temperature contact during soldering
7 emcore corporation datasheet | march 16, 2008 1792 eccw narrow linewidth cw external cavity laser diode laser safety class iiib laser product this product meets the appropriate standard in title 21 of the code of federal regulations (cfr). fda/cdrh class iiib laser product. this device has been classified with the fda/cdrh under accession number tbd. wavelength = 1.5 m. maximum power = 100 mw. because of size constraints, laser safety labeling (including an fda class iiib 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.
8 emcore corporation datasheet | march 16, 2008 1792 eccw narrow linewidth cw external cavity laser diode ordering code definitions 1792-vvv-www-xx-y-zz example 1792-smf-430-10-b-fa : eccw, smf fiber pigtail, itu channel 43, 1542.94 nm, 10 mw minimum output power, linewidth option b, fc/apc optical connector information contained herein is deemed to be reliable and accurate as of issue date. emcore reserves the right to change the de sign or specifications of the product at any time without notice. ortel, the ortel logo, emcore, and the emcore logo are trademarks of emcore corporation . ds.1792 copyright 2008. emcore corporation emcore corporation 2015 west chestnut street a lhambra, california 91803-1542 tel: 626-293-3400 fax: 626-293-3428 www.emcore.com family name eccw wavelength www = 200: itu channel 20, 1561.42 nm www = 210: itu channel 21, 1560.61 nm ? www = 590: itu channel 59, 1530.33 nm www = 600: itu channel 60, 1529.55 nm fiber pigtail vvv = smf: single mode fiber vvv = pmf: polarization maintaining fiber connecto r zz = fa: fc/apc zz = sa: sc/apc minimum optical output powe r xx = 10: 10 mw version xx = 15: 15 mw version linewidth y = a: a version y = b: b version
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