mitsubishi (optical devices) FU-48SDF-1 1.3 m m dfb-ld module with singlemode fiber pigtail (bias circuit integrated, digital application) description mod ule type FU-48SDF-1 is a 1.3 m m df b-ld mod ule with single-mode optical fiber. th is mod ule is suitable to a light source for use in 2.5gb/s digital optical communication systems. features multi quantum wells (mqw) dfb laser diode module input impedance is 25 w emission wavelength is in 1.3 m m band high-speed response built-in optical isolator built-in thermal electric cooler butterfly package with photodiode for optical output monitor application high speed transmission systems (~2.5gb/s) absolute maximum ratings (tld=25 c) parameter symbol conditions rating unit laser diode optical output power from fiber end pf cw 10 mw forword current if cw 150 ma reverse voltage vrl - 2 v photodiode reverse voltage vrd - 20 v for monitoring forward current ifd - 2 ma cooler cooler voltage vpe - 2.4 v (note) cooler current ipe - 1.2 a operating case temperature tc - -20~+65 c storage temperature tstg - -40~+70 c no te. even if the thermo-electric cooler (tec) is operated within the rate d conditions, uncontrolled current loading or operation without heatsink may easily damage the mod ule by exceeding the storage temperature range. th ermistor resistan ce should be properly mon itored by the feedback circuit during te c operation to avoid the catastrophic damage.
mitsubishi (optical devices) FU-48SDF-1 1.3 m m dfb-ld module with singlemode fiber pigtail (bias circuit integrated, digital application) electrical/optical characteristics (tld=25 c,tc=25 c, unless otherwise noted) parameter symbol test conditions limits unit min. typ. max. threshold current ith cw - 1 5 4 0 m a operating current iop cw - 4 8 8 0 m a operating voltage vop cw,if=iop (note 1) - 1.3 1.8 v input impedance zin if=iop - 2 5 - w opt i c a l out put pow er f r om f i b e r end pf cw,if=iop 4 6 - m w light-emission central wavelength c cw,if=iop 1290 1310 1330 nm spectral width (-20db full width) dl 2.5gb/s nrz mark ratio 50% if_perk=iop extinction ratio 8% (note 2) - 0.4 - n m side mode suppression ratio sr cw,if=iop 33 40 - d b cutoff frequency (-1,5db optical) fc if=iop 3.5 - - ghz rise and fall time (10~90%) tr,tf 2.5gb/s nrz mark ratio 50% if_peak=iop extinction ratio 8% (note 2) - - 150 ps relative intensity noise nr cw,if=iop - -155 -145 db/hz tracking error (note 3) er tc=-20~+65 c,apc,atc - 0.3 - d b differential efficiency h - 0.1 0.17 0.35 mw/ ma monitor current imon cw,if=iop,vrd=5v 0.1 - - ma dark current (pd) id vrd=5v - 0.1 1 m a capacitance (pd) ct vrd=5v,f=1mhz - 1 0 - pf note 1. if: ld forward current 2. optical return loss of the connectors should be greater than 40db in order to get the specified performance. 3. er=max|10 log(pf(tc)/pf(25 c))| thermal characteristics (tld=25 c,tc=-20~+65 c) parameter symbol test conditions limits unit min. typ. max. thermistor resistance rth tld=25 c 9.5 10 10.5 k w b constant of thermistor resistance b - - 3950 - k cooling capacity d t tc=65 c 40 - - c cooler current ipe d t=40 c - 0.6 1 a cooler voltage vpe d t=40 c - 1.2 2 v optical fiber specification parameter limits unit type sm - mode filed dia. 9.5 1 m m cladding dia. 125 2 m m jacket dia. 0.9 typ. mm
mitsubishi (optical devices) FU-48SDF-1 1.3 m m dfb-ld module with singlemode fiber pigtail (bias circuit integrated, digital application) outline diagram (unit : mm) FU-48SDF-1
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