preliminary tz7-0 1-262a ( 1 / 6 ) september 6, 2001 approved approved charged h.koyanagi preliminary specification of uncooled dfb-ld module for coarse wdm module type: fu- 645sdf-x2mxx ( es product ) a b c d x date approved 7.sep. ? 01 t.nambara mitsubishi electric corporation * mitsubishi electric corp. reserves the right to change product design and specification without notice.
preliminary tz7-0 1-262a ( 2 / 6 ) mitsubishi (optical devices) fu-645sdf- x2mxx ( e s product) 1.55 m m uncooled dfb-ld module with singlemode fiber pigtail (bias circuit integrated, digital application) description module type fu- 6 45sdf- x2 m xx is a 1. 55 m m uncooled dfb-ld module with single-mode optical fiber. this module is suitable to a light source for use in 2.5gb/s coarse wdm digital optical communication systems. this module is e s product. features l l /4 shifted multi quantum wells (mqw) dfb laser diode module l input impedance is 25 w l emission wavelength is in 1.55 m m band l high-speed response l built-in optical isolator l built-in thermistor and bias t l 8-pin mini-dil package with gull wing leads l with photodiode for optical output monitor application high speed transmission systems (~2.5gb/s) coarse wdm (cwdm) absolute maximum ratings ( tc=25 c) parameter symbol conditions rating unit optical output power pf cw 6 mw forward current if cw 100 ma laser diode reverse voltage vrl - 2 v reverse voltage vrd - 20 v photodiode forward current ifd - 2 ma operating case temperature tc - -5 ~ + 70 c storage temperature tstg - -40 ~ +85 c
preliminary tz7-0 1-262a ( 3 / 6 ) mitsubishi (optical devices) fu-645sdf- x2mxx ( e s product) 1.55 m m uncooled dfb-ld module with singlemode fiber pigtail (bias circuit integrated, digital application) electrical/optical characteristics (tc= -5~70 c , unless otherwise noted) limits parameter symbol test conditions min. typ. max. unit cw , tc=25 c - 12 25 threshold current ith cw 4 - 40 ma op tical output power at threshold current pth cw, ibias=ith - - 50 m w cw, pf=2mw , tc=25 c - 42 70 operating current iop cw, pf=2mw , tc=70 c - 65 90 ma cw, pf=2mw , tc=25 c - 1.2 1.5 operating voltage vop cw, pf=2mw , tc=70 c - 1.6 1.8 v input impedance zin - - 25 - w op tical output power from fiber end pf cw, nominal - 2 - mw -x2mx4 1507 1510 1513 -x2mx5 1527 1530 1533 -x2mx6 1547 1550 1553 light-emission central wavelength l c cw, pf= 1 mw , tc=25 c (note1) -x2mx7 1567 1570 1573 nm wavelength temperature coefficient l c t - - 0.10 0.11 n m / c spectral width dl (note2), -20db - - 0.4 nm side mode suppression ratio sr (note2) 30 45 - db cutoff frequency (-1.5db optical) fc pf=1mw 3.5 - - ghz rise and fall time (10~90%) tr, tf (note2) - 125 150 psec dispersion penalty pp (note2), +1800ps/nm disp. - - 2 db relative intensity noise nr cw, pf=1mw, f=1ghz - -150 -140 db/hz tracking error (note 3 ) er cw , apc ( imon=const.) - 0.5 1.25 db cw, tc=25 c 0.06 - 0.1 differential efficiency h cw 0.03 - 0.15 mw/ ma m onitor current im on cw, pf=1mw, vrd=5v 0.05 - 1 m a optical isolation iso - 20 - - db dark current (pd) id vrd=5v - - 0.1 m a capacitance (pd) ct vrd=5v, f=1mhz - - 10 pf thermistor resistance rth tc=2 5 c 9.5 10 10.5 k w b constant of rth b - - 3950 - k note 1) ? x ? s in type number are decided with types of optical connector and lead form. please refer type number information in the next page. note 2) 2.48832gb/s nrz, 2 23 -1, pf_ave=1mw, extinction ratio 10db, optical return loss from the line should be greater than 24db in order to ensure the specified performance. note 3) er=max|10 log( pf / pf@25c)| fiber pigtail specifications parameter limits unit type sm - mode field diameter 10 1 m m cladding diameter 125 2 m m secondary coating outer diameter 0.9 0.1 mm connector see table 1. - optical return loss of connector 40 (min) db
preliminary tz7-0 1-262a ( 4 / 6 ) mitsubishi (optical devices) fu-645sdf- x2mxx ( e s product) 1.55 m m uncooled dfb-ld module with singlemode fiber pigtail (bias circuit integrated, digital application) documentation threshold current ( ith) at tc=25, 70 c operating current ( iop) at tc=25, 70 c operating voltage ( v op) at tc=25 c light-emission central wavelength ( l c) at tc=25 c monitor current ( imon) at tc=25 c op tical output power from fiber end ( pf) type number informa tion fu- 645 sdf- x 2 m xx wavelength : please see electrical/optical characteristics table. lead form: pl ease see table 1 below. connector : please see table 1 below. table 1. type number connector type l (note 3) outline diagram fu-645 s df- 2m1x none (note 4) - fu-645sdf- v2m1x fc/pc 28.4 (1) fu-645sdf- w2m1x sc/pc 34.5 fu-645 s df- 2m2x none (note 4) - fu-645sdf- v2m2x fc/pc 28.4 (2) fu-645sdf- w2m2x sc/pc 34.5 note 3 ) ? l ? is defined in outline diagram s. note 4) there are some cases where a connector for testing is shipped with the product. then the fiber length not including the connector is more than 1000mm.
preliminary tz7-0 1-262a ( 5 / 6 ) mitsubishi (optical devices) fu-645sdf- x2mxx ( e s product) 1.55 m m uncooled dfb-ld module with singlemode fiber pigtail (bias circuit integrated, digital application) outline diagram (1) (unit : mm) fu-6 45s df -x2m1x pin function 1 thermistor 2 thermister 3 ld bias, cathode 4 pd cathode 5 pd anode 6 ld anode 7 ld rf, cathode 8 ld anode pd ld 19 w thermistor 4 3 2 1 8 7 6 5 ? pin no. top view
preliminary tz7-0 1-262a ( 6 / 6 ) mitsubishi (optical devices) fu-645sdf- x2mxx 1.55 m m uncooled dfb-ld module with singlemode fiber pigtail ( e s product) (bias circuit integrated, digital application) outline diagram (2) (unit : mm) fu-6 45s df -x2m2x pin function 1 thermistor 2 thermister 3 ld bias, cathode 4 pd cathode 5 pd anode 6 ld anode 7 ld rf, cathode 8 ld anode pd ld 19 w thermistor 4 3 2 1 8 7 6 5 ? pin no. top view
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