nec's ea modulator integrated ingaasp mqw dfb laser diode module for 2.5 gb/s ultralong-reach 360, 600, 240 km dwdm applications nx8564/ nx8565/ nx8566le series nec's nx8564/8565/8566le series are electro-absorption (ea) mod u la tor integrated, 1550 nm multiple quantum well (mqw) struc tured distributed feed-back (dfb) laser diodes. the mod ule is capable of 2.5 gb/s applications of over 360, 600, 240 km ultralong-reach and available for dense wavelength division multoplexing (dwdm) wavelenghts based on itu-t rec om men da tions, enabling a wide range of applications. description ? integrated electroabsorption modulator ? very low dispersion penalty nx8564le-bc/cc - over 360 km (6480 ps/nm) nx8565le-bc/cc - over 600 km (10800 ps/nm) nx8566le-bc/cc - over 240 km (4320 ps/nm) ? low modulation voltage ? av ailable for dwdm wavelenght based on itu-t recommendation (100 ghz grid, refer to ordering information) features california eastern laboratories p art number nx8564/8565/8566le series symbols parameters and conditions units min typ max t set laser set temperature 1 c 20 35 i op operating current ma 50 60 100 v center modulation center voltage 2 v -1.5 -1.2 -0.5 v mod modulation voltage 2 v?23 v fld for ward voltage of ld, i fld = i op v? 1.6 2.0 i th thresh old current ma ? 7 20 p f optical output power from fiber, i fld = i op, under modulation 2 (nx8564/65le series) dbm -5 -2 ? i fld = i op, under modulation 2 (nx8566le series) 01? p peak emission wavelength, i fld = i op , v ea = 0 v nm 1530 speci t ed to itu-t 3 1563 1574 1609 smsr side mode suppression ratio, i fld = i op , v ea = 0 v db 30 >37 ? er extinction ratio, i fld = i op , under modulation 2 db 10 >11 ? t f rise time, i fld = i op , 20-80%, under modulation 2 ps ? 70 125 t r rise time, i fld = i op , 80-20%, under modulation 2 ps ? 70 125 electro-optical characteristics (t ld = ts e t, t c = -20 to +70c, unless otherwise speci t ed) notes: 1. nx8564/65/66le series : tset is a certain point between 20 and 35c nx8564/65/66lexxx series : tset is a certain point between 20 and 35c for itu-t grid wavelength 2. nx8564le: c-band 360 km, l-band 288 km (6480 ps/nm) smf under modulation nx8564le: c-band 360 km, l-band 288 km (6480 ps/nm) smf under modulation nx8564le: c-band 360 km, l-band 288 km (6480 ps/nm) smf under modulation 2.48832 gb/s, prbs 223 -1, vea = vcenter 1/2 vmod, ifld = iop, tld = tset, nec test system vcenter : a certain point between -1.5 and -0.5 v vmod : a certain point 3 v or below iop : a certain point between 50 and 80 ma 3. available for dwdm wavelenght based on itu-t recommendation (100 ghz grid). please refer to ordering information.
nx8564/8565/8566le series electro-optical characteristics (t ld = 25c, t c = -20 to +70c) note: 1. tracking error: p f (mw) t ld = t c = 25 c (at p f (25 c) = p op ) t ld = 25 c, t c = -20 to +70 c p op 0 p f i m i m p f = 10 log p op [db] p art number nx8564/8565/8566le series symbols parameters and conditions units min typ max dp dispension penalty, i fld = i op , smf under modulation 2,4 db <1.5 2 i s isolation db 23 rin relative intensity noise10 mhz to 10 ghz, v rm = 0 v, t ld , i op db <-135 -130 s 11 input return loss i fld = i op , v ea = -1 v, 50 ? 130 mhz to 2 ghz db -8 i fld = i op , v ea = -1 v, 50 ? 2 ghz to 2.5 ghz -5 notes: 2. nx8564le: c-band 360 km, l-band 288 km (6480 ps/nm) smf under modulation nx8564le: c-band 360 km, l-band 288 km (6480 ps/nm) smf under modulation nx8564le: c-band 360 km, l-band 288 km (6480 ps/nm) smf under modulation 2.48832 gb/s, prbs 223 -1, vea = vcenter 1/2 vmod, ifld = iop, tld = tset, nec test system vcenter : a certain point between -1.5 and -0.5 v vmod : a certain point 3 v or below iop : a certain point between 50 and 80 ma 4. ber 10 -10 symbols parameters and conditions units min typ max applicable to monitor pd , (t ld = t set, t c = -20 to +70c) i m monitor current, i fld = i op , v ea = 0 v a2 0 100 1000 i d dark current, v rpd = 5 v, v ea = 0 v na 10 1 t racking error, i m = const. db 0.5 c t t erminal capacitance, v rpd = 5 v, f = 1 mhz pf 15 applicable to thermistor and tec , (t ld = t set, t c = -20 to +70c) r thermistor resistance, t ld = 25c k ? 9.5 10.0 10.5 bb constant k 3350 3450 3550 i c cooler current a 1.2 v c cooler voltage v 2.4
note: 1. operation in excess of any one of these parameters may result in permanent damage. absolute maximum ratings 1 (t c = 25c, unless otherwise speci t ed) symbols parameters units ratings p f optical output power from fiber mw 10 i fld forward current of ld ma 150 v rld reverse voltage of ld v 2.0 v fm forward voltage of modulator v 1 v rm reverse voltage of modulator v 5 i fpd forward current of pd ma 1 v rpd reverse voltage of pd v 10 i c cooler current a 1.5 v c cooler voltage v 2.5 t c operating case temperature c -20 to +70 t stg storage temperature c -40 to +85 t sld lead soldering temp. (10 s) c 260 nx8564/8565/8566le series
ordering information nx8564/8565/8566le series w avelength code itu-t wavelength *1 (nm) frequency (thz) w avelength code itu-t wavelength *1 (nm) frequency (thz) 287 1528.77 196.10 485 1548.51 193.60 295 1529.55 196.00 493 1549.31 193.50 303 1530.33 195.90 501 1550.11 193.40 311 1531.11 195.80 509 1550.91 193.30 318 1531.89 195.70 517 1551.72 193.20 326 1532.68 195.60 525 1552.52 193.10 334 1533.46 195.50 533 1553.32 193.00 342 1534.25 195.40 541 1554.13 192.90 350 1535.03 195.30 549 1554.94 192.80 358 1535.82 195.20 557 1555.74 192.70 366 1536.60 195.10 565 1556.55 192.60 373 1537.39 195.00 573 1557.36 192.50 381 1538.18 194.90 581 1558.17 192.40 389 1538.97 194.80 589 1558.98 192.30 397 1539.76 194.70 597 1559.79 192.20 405 1540.55 194.60 606 1560.60 192.10 413 1541.34 194.50 614 1561.41 192.00 421 1542.14 194.40 622 1562.23 191.90 429 1542.93 194.30 630 1563.04 191.80 437 1543.73 194.20 445 1544.52 194.10 453 1545.32 194.00 461 1546.11 193.90 469 1546.91 193.80 477 1547.71 193.70 nx856 le - cc : sc-upc connector bc : fc-upc connector (option) without wavelength code : wavelength is a certain point between 1528.77 to 1563.04 nm with wavelength code : refer to table a 4 : 360 km (6480 ps/nm) 5 : 600 km (10800 ps/nm) 6 : 240 km (4320 ps/nm) t able a: dwdm wavelengths based on itu-t recommendations (@ tld = tset) note: 1. the value which omitted and computed the 3rd place below the decimal point.
extinction ratio er (db) extinction ratio vs. modulation voltage (cw) modulation voltage (cw) v r mpp (v) 0 0 10 15 20 25 5 12 3 optical output power from fiber (cw), p f (mw) optical output power from fiber (cw) vs. forward current frequency, i f (ma) forward current i f (ma) forward current vs. forward voltage frequency voltage v f , (v) 050 100 150 1.0 2.0 3.0 4.0 150 100 50 0 0.5 1.0 1.5 2.0 typical performance curves (t ld = +25c, unless otherwise speci t ed) nx8564/8565/8566le series forward current i f (ma) thermistor resistance vs. ambient temperature ambient temperature t a (oc) 50 30 20 10 5 3 2 1 01020304 050 6070 75 relative intensity longitudinal mode w avelenght (nm) 0 -10 -20 -30 -40 -50 -60 1540.0 1545.0 1555.0 15550 1560.0 remark:the graphs indicate nominal characteristics.
600 km standard fiber transmission ex am ple (nx8565le series) remark:the graphs indicate nominal characteristics. test setup nx8564/8565/8566le series eye diagram back to back (100 ps/div.) relative intensity (20 mv/div.) after 600 km (100 ps/div.) relative intensity (10 mv/div.) eye diagram -40 -38 -36 -34 -32 10 -6 10 -7 10 -8 10 -9 10 -10 10 -11 10 -12 error rate characteristics bit error rate received power, p (dbm) -42 10 -5 10 -4 10 -13 back to back after 600 km -30 -28 2.48832 gb/s, nrz 2 v p-p , prbs 2 23 - 1, i op = 70 ma, t c = 25?, v center = -1.2 v, v mod = 2.0 v tx rx edfa 120 km 120 km 120 km 120 km 120 km 2.5 gb/s edfa edfa edfa edfa edfa
outline dimensions (units in mm) optical fiber characteristics p arameter units specification mode field diameter m 9.30.5 cladding diameter m 1251 t ight buffer diameter m 900100 cut-off wavelenght nm < 1270 attenuation 1525 to 1575 nm db/km < 0.3 minimum fiber bending radius mm 30 fiber length mm 1225 min flammability ul1581vw-1 05/16/2003 life support applications these nec products are not intended for use in life support devices, appliances, or systems where the malfunction of these prod ucts can reasonably be expected to result in personal injury. the customers of cel using or selling these products for use in such applications do so at their own risk and agree to fully indemnify cel for all damages resulting from such improper use or sale. nx8564/8565/8566le series pin no. pin no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 function function pin connections gnd gnd nc gnd signal input (mod), 50 ? rf input gnd gnd thermistor thermistor ld dc bias pd anode pd cathode cooler anode cooler cathode top view #8 #14 #7 #1 + pd ld mod cooler thermistor optical fiber (smf) length : 1 000 min. 29.97?0.25 8.0 0.75 5.4 8.0 nose fiber 20.83?0.13 26.04?0.13 7 8 1 14 1.25 15.24 2.54 4 2.67 22.0 max. 12.7?0.15 10 min. 8.89?0.13 0.9 6.0 max. -cc : sc-upc connector -bc : fc-upc connector fiber length: 1 000 mm min. 352 mm 8.990.5 mm
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