MITSUBISHI LASER DIODES
ML9XX31 SERIES
Notice: Some parametric limits are subject to change.
InGaAsP DFB-LASER DIODE WITH EA MODULATOR
TYPE
NAME
ML9SM31
DESCRIPTION
FEATURES
ML9XX31 series are DFB (Distributed Feedback) laser diodes with a
monolithically integrated EA modulator, suitable light source for 10Gbps
or 2.5Gbps application (Single channel / DWDM).
• Available distance
ML9SM31-01 series : 50km(Max) at 10Gbps
ML9SM31-02 series : 700km(Max) at 2.5Gbps
• High extinction ratio (Min. 11dB at 2.5Gbps, Typ. 11dB at 10Gbps)
• High - side mode suppression ratio (Typ. 40dB)
• High speed response (Typ. 30psec)
Available wavelengths are from 1530nm to 1565nm with 0.8nm spacing.
ML9SM31 is supplied with the chip-on-carrier type package.
APPLICATION
2.5Gbps long-haul transmission system
10Gbps transmission system
ABSOLUTE MAXIMUM RATINGS
Symbol
IF
VRL
VEA
Tc
Parameter
Conditions
Ratings
200
2
Unit
mA
V
V
degC
degC
Forward current (Laser diode)
Reverse voltage (Laser diode)
Reverse voltage (Modulator)
Case temperature
CW
-
-
-
-
-3
+15 to +35
-40 to +100
Tstg
Storage temperature
ELECTRICAL/OPTICAL CHARACTERISTICS (Tc=25degC)
Symbol
Ith
Iop
Vop
λp
θ//
Parameter
Threshold current
Operation current
Operating voltage
Peak wavelength
Beam divergence angle (parallel)
Beam divergence angle
(perpendicular)
Test Conditions
CW, Vmod=0V
CW, Po=5mW, Vmod=0V
CW, Po=5mW, Vmod=0V
CW, If>Iop, Vmod=0V
CW, Po=5mW, Vmod=0V
Min.
---
---
---
-0.4
---
Typ.
10
60
1.2
code list
30
Max.
30
90
1.8
+0.4
---
Unit
mA
mA
V
nm
deg.
CW, Po=5mW, Vmod=0V
CW, Po=5mW, Vmod=0V
---
---
45
---
---
deg.
mW
θ⊥
Pm
Monitoring output power
1.0
ML9SM31-01 series for 10Gbps
fc
tr,tf
Cut off frequency
CW, If>Iop, Vmod=-1V
9.95328Gbps, NRZ, PRBS 223-1
If>Iop, Vpp=2.5V,
10
---
35
10
14
30
40
11
---
40
---
---
GHz
psec
dB
Rise and fall time (10%-90%)
Side mode suppression ratio
Extinction ratio
SMSR
Ex
Voffset=0 to -1.0V
dB
ditto
Pp
Dispersion penalty
---
---
2.0
dB
SMF 50km @BER=10-10
ML9SM31-02 series for 2.5Gbps
fc
tr,tf
Cut off frequency
CW, If>Iop, Vmod=-1V
2.48832Gbps, NRZ, PRBS 223-1
If>Iop, Vpp=2.5V,
4
---
---
40
---
---
120
---
GHz
psec
dB
Rise and fall time (10%-90%)
Side mode suppression ratio
Extinction ratio
---
35
11
SMSR
Ex
Voffset=0 to -1.0V
---
dB
ditto
Pp
Dispersion penalty
---
---
2.0
dB
SMF 700km @BER=10-10
MITSUBISHI
ELECTRIC
May, 2004