ML9MXITXSU4BI0SHI SLAESERR IDIEODSES
Notice : Some parametric limits are subject to change
2.5Gbps InGaAsP DFB LASER DIODE
TYPE
ML925B40F / ML920J40S
ML925J40F / ML920L40S
NAME
DESCRIPTION
APPLICATION
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.
· 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
Po
Parameter
Conditions
Ratings
Unit
Output power
CW
---
6
150
2
mW
mA
V
If
VRL
IFD
Forward current (Laser diode)
Reverse voltage (Laser diode)
Forward current (Photo diode)
Reverse voltage (Photo diode)
---
---
2
20
mA
V
VRD
---
Tc
Tstg
Case temperature
Storage temperature
---
---
0 to +85
-40 to +100
ºC
ºC
ELECTRICAL/OPTICAL CHARACTERISTICS (Tc=25ºC)
Symbol
Ith
Parameter
Threshold current
Test conditions
Min. Typ. Max.
Unit
mA
CW
CW
---
---
---
---
---
---
---
10
35
45
35
70
90
1.1
15
40
<*1>
<*2>
Tc=85ºC
50
Iop
Operation current
CW, Po=5mW
CW, Po=5mW
Tc=85ºC
45
mA
<*1>
<*2>
80
100
1.5
---
Vop
η
Operating voltage
Slope efficiency
CW, Po=5mW
CW, Po=5mW
CW, Po=5mW <*3>
CW, Po=5mW
V
0.17 0.22
0.15 0.20
mW/mA
---
Peak wavelength
Side mode suppression ratio
Side mode suppression ratio(RF)
<*4>,<*5>
45
nm
dB
λp
35
---
---
---
---
---
CW, Po=5mW, Tc=0 to 85ºC
SMSR
2.48832Gbps,Ib=Ith, Ipp=40mA
45
25
Beam divergence angle (parallel) <*6> CW, Po=5mW
(perpendicular) <*6> CW, Po=5mW
deg.
deg.
θ //
θ ┴
---
30
---
fr
Resonance frequency
2.48832Gbps,Ib=Ith, Ipp=40mA
---
11
---
GHz
ps
2.48832Gbps,Ib=Ith, Ipp=40mA
tr,tf
Rise and Fall time <*7>
---
80
120
20%-80%
Monitoring output current (PD)
Dark current (PD)
Capacitance (PD)
Im
Id
Ct
0.1
---
---
---
---
10
1.0
0.1
20
mA
µA
pF
CW, Po=5mW,VRD=1V,RL=10Ω
V
RD=5V
VRD=5V
<*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.
MITSUBISHI
ELECTRIC
Feb. 2005