MITSUBISHI LASER DIODES
ML9XX40 SERIES
Notice : Some parametric limits are subject to change 2.5Gbps InGaAsP DFB LASER DIODE
Feb. 2005
MITSUBISHI
ELECTRIC
TYPE
NAME
DESCRIPTION
ML9XX40 series are uncooled DFB (Distributed Feedback) laser
diodes for 2.5Gbps transmission emitting light beam at 1470~1610nm.
λ/4 shifted grating structure is employed to obtain excellent SMSR
performance under 2.5Gbps modulation. Furthermore, ML9xx40 can
operate in the wide temperature range from 0oC to 85 oC without any
temperature control. They are well suited for light source in long
distance digital transmission application of coarse WDM.
APPLICATION
· 2.5Gbps long-haul transmission
· Coarse WDM application
FEATURES
· λ/4 shifted grating structure
· Wide temperature range operation (0oC to 85oC)
· High side-mode-suppression-ratio (typical 45dB)
· High resonance frequency (typical 11GHz)
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Conditions Ratings Unit
Po Output power CW 6 mW
If Forward current (Laser diode) --- 150 mA
VRL Reverse voltage (Laser diode) --- 2 V
IFD Forward current (Photo diode) --- 2 mA
VRD Reverse voltage (Photo diode) --- 20 V
Tc Case temperature --- 0 to +85 ºC
Tstg Storage temperature --- -40 to +100 ºC
ELECTRICAL/OPTICAL CHARACTERISTICS (Tc=25ºC)
Symbol Parameter Test conditions Min. Typ. Max. Unit
CW --- 10 15
<*1> --- 35 40
Ith Threshold current
CW
Tc=85ºC <*2> --- 45 50
mA
CW, Po=5mW --- 35 45
<*1> --- 70 80
Iop Operation current
CW, Po=5mW
Tc=85ºC <*2> --- 90 100
mA
Vop Operating voltage CW, Po=5mW --- 1.1 1.5 V
CW, Po=5mW 0.17 0.22 ---
η Slope efficiency CW, Po=5mW <*3> 0.15 0.20 --- mW/mA
λp Peak wavelength CW, Po=5mW <*4>,<*5> nm
Side mode suppression ratio CW, Po=5mW, Tc=0 to 85ºC 35 45 --- dB
SMSR Side mode suppression ratio(RF) 2.48832Gbps,Ib=Ith, Ipp=40mA --- 45 ---
θ // Beam divergence angle (parallel) <*6> CW, Po=5mW --- 25 --- deg.
θ ┴ (perpendicular) <*6> CW, Po=5mW --- 30 --- deg.
fr Resonance frequency 2.48832Gbps,Ib=Ith, Ipp=40mA --- 11 --- GHz
tr,tf Rise and Fall time <*7> 2.48832Gbps,Ib=Ith, Ipp=40mA
20%-80% --- 80 120 ps
Im Monitoring output current (PD) CW, Po=5mW,VRD=1V,RL=10Ω0.1 --- 1.0 mA
Id Dark current (PD) VRD=5V --- --- 0.1 µA
Ct Capacitance (PD) VRD=5V --- 10 20 pF
<*1> Applied to ML9xx40-04~09 and -12~17.
<*2> Applied to ML9xx40-10~11 and -18~19.
<*3> Applied to ML925J40F and ML920L40S.
<*6> Beam divergence is not applied to ML925J40F and ML920L40S.
<*7> Except influence of the 18mm lead.
ML925B40F / ML920J40S
ML925J40F / ML920L40S