data sheet the information in this document is subject to change without notice. ? 1997 document no. p12456ej3v0ds00 (3rd edition) date published november 1998 ns cp(k) printed in japan laser diode ndl7910p 1 550 nm optical fiber communications ea modulator integrated mqw-dfb laser diode module for 2.5 gb/s ultralong-reach applications the mark ? ? ? ? shows major revised points. description the ndl7910p is an ea modulator integrated 1 550 nm dfb-ld for 2.5 gb/s. the newly developed bandgap energy controlled selective movpe technology is utilized as fabrication method. it is designed for 2.5 gb/s ultralong- reach applications. features ? integrated electroabsorption modulator ? low modulation voltage ? wavelength selectable for itu-t standards ? 14-pin butterfly package pin no. pin no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 top view pd + C #8 #14 ld 29.97 0.25 8.20.2 0.75 5.15 5.6 20.830.13 26.040.13 7 8 1 14 1.25 15.24 2.54 0.5 4C 2.67 f 22.3 12.70.15 6.0 #7 #1 10 min. 8.890.13 mod 1.0 0.9 f unction function pin connections thermistor thermistor ld dc bias pd anode pd cathode cooler anode cooler cathode gnd gnd nc gnd signal input (mod), 50 w rf input gnd gnd cooler thermistor package dimensions in millimeters optical fiber (smf) length: 1 m
2 ndl7910p ordering information part number available connector ndl7910p without connector ndl7910pc with fc-pc connector absolute maximum ratings (t c = 25 c, unless otherwise specified) parameter symbol ratings unit optical output power from fiber p f 10 mw forward current of ld i fld 150 ma reverse voltage of ld v rld 2.0 v forward voltage of modulator v fm 1v reverse voltage of modulator v rm 5v forward current of pd i fpd 1ma reverse voltage of pd v rpd 10 v cooler current i c 1.5 a cooler voltage v c 2.5 v operating case temperature t c - 20 to +70 c storage temperature t stg - 40 to +85 c lead soldering temperature (10 s) t sld 260 c electro-optical characteristics (t ld = 25 c, t c = - - - - 20 to +70 c, unless otherwise specified) parameter symbol conditions min. typ. max. unit operating current i op 50 100 ma modulation center voltage v rmc 0.5 1.5 v modulation voltage v rmpp 23v forward voltage of ld v fld i fld = i op 1.8 v threshold current i th 720ma optical output power from fiber p f v rm = 0 v, i fld = i op 0.5 mw peak emission wavelength l p i fld = i op , v rm = 0 v 1 545 1 560 nm spectral line width d n i fld = i op , C20 db, under modulation *1 4ghz side mode suppression ratio smsr i fld = i op , v rm = 0 v 30 db extinction ratio er i fld = i op , under modulation *1 10 db cut-off frequency f c i fld = i op , v rm = 1/2 v rmpp , C3 db, 50 w 3.2 ghz rise time t r i fld = i op , 20-80 %, under modulation *1 125 ps fall time t f i fld = i op , 80-20 %, under modulation *1 125 ps isolation i s 30 db *1 2.48832 gb/s, prbs 2 23-1 , v rm =v rmc 1/2 v rmpp , nec test system
3 ndl7910p electro-optical characteristics (applicable to monitor pd: t ld = 25 c, t c = - - - - 20 to +70 c) parameter symbol conditions min. typ. max. unit monitor current i m i fld = i op , v rm = 0 v 20 1 000 m a dark current i d v rpd = 5 v 10 na tracking error g *1 i m = const. 0.5 db monitor capacitance c t v rpd = 5 v, f = 1 mhz 15 pf *1 g = 10 log electro-optical characteristics (applicable to thermistor and tec: t ld = 25 c, t c = - - - - 20 to +70 c) parameter symbol conditions min. typ. max. unit thermistor resistance r t ld = 25 c 9.5 10.0 10.5 k w b constant b 3 300 3 400 3 500 k cooler current i c d t = 70 - t set 1.5 a cooler voltage v c d t = 70 - t set 2.5 v p f p op p f (mw) 0 i m i m t ld = t c = 25 ?c t ld = 25 ?c, t c = C20 to +70 ?c (@ p f (25 ?c) = p op ) p op p f
4 ndl7910p typical characteristics (t ld = 25 c, unless otherwise specified) 0.5 v 1 v 2 v 3 v 2.0 1.5 1.0 0.5 0 50 100 150 200 0 5 10 15 20 25 0 12 3 optical output power from fiber p f (mw) forward current of ld i fld (ma) optical output power from fiber vs. forward current of ld (cw) extinction ratio vs. modulation voltage (cw) extinction ratio er (db) modulation voltage v rmpp (v) v rm = 0 v remark the graphs indicate nominal characteristics.
5 ndl7910p dfb-ld family for telecom absolute maximum ratings typical characteristics part number t c ( c) t stg ( c) i th (ma) p f (mw) l c (nm) sdh application package typ. min. typ. ndl7603p series - 40 to +85 - 40 to +85 15 2 1 310 stm-4 : 622 mb/s coaxial ndl7620p series 0 to +70 - 40 to +85 45 (max.) 2 1 310 stm-16: 2.5 gb/s coaxial NDL7701P series - 20 to +85 - 40 to +85 15 2 1 550 stm-4 : 622 mb/s coaxial ndl7705p series - 40 to +85 - 40 to +85 15 2 1 550 stm-4 : 622 mb/s coaxial nx8562lb - 20 to +65 - 40 to +85 20 20 1 550 *1 cw light source for external modulator bfy nx8563lb series - 20 to +65 - 40 to +85 20 10 itu-t *2 cw light source for external modulator bfy ndl7910p - 20 to +70 - 40 to +85 7 0.5 1 550 *1 stm-16: 2.5 gb/s ea modulator integrated dfb-ld bfy *1 wavelength selectable for itu-t standards upon request. *2 wavelength selectable for itu-t standards.
6 ndl7910p reference document name document no. nec semiconductor device reliability/quality control system c 11159e quality grades on nec semiconductor devices c11531e semiconductor device mounting technology manual c10535e semiconductor selection guide x10679e
7 ndl7910p [memo]
ndl7910p caution within this device there exists gaas (gallium arsenide) material which is a harmful substance if ingested. please do not under any circumstances break the hermetic seal. danger invisible laser radiation avoid direct exposure to beam output power mw max wavelength nm class lllb laser product semiconductor laser avoid exposure-invisible laser radiation is emitted from this aperture nec corporation nec building, 7-1, shiba 5-chome, minato-ku, tokyo 108-01, japan type number: manufactured: serial number: this product conforms to fda regulations as applicable to standards 21 cfr chapter 1. subchapter j. the export of this product from japan is prohibited without governmental license. to export or re-export this product from a country other than japan may also be prohibited without a license from that country. please call an nec sales representative. no part of this document may be copied or reproduced in any form or by any means without the prior written consent of nec corporation. nec corporation assumes no responsibility for any errors which may appear in this document. nec corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. no license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of nec corporation or others. while nec corporation has been making continuous effort to enhance the reliability of its semiconductor devices, the possibility of defects cannot be eliminated entirely. to minimize risks of damage or injury to persons or property arising from a defect in an nec semiconductor device, customers must incorporate sufficient safety measures in its design, such as redundancy, fire-containment, and anti-failure features. nec devices are classified into the following three quality grades: "standard", "special", and "specific". the specific quality grade applies only to devices developed based on a customer designated "quality assurance program" for a specific application. the recommended applications of a device depend on its quality grade, as indicated below. customers must check the quality grade of each device before using it in a particular application. standard: computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots special: transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support) specific: aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. the quality grade of nec devices is "standard" unless otherwise specified in nec's data sheets or data books. if customers intend to use nec devices for applications other than those specified for standard quality grade, they should contact an nec sales representative in advance. anti-radioactive design is not implemented in this product. m4 96. 5
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