PRODUCT INFORMATION
840
nm
2B454
VCSEL Laser Diode
Datacom
This Vertical Cavity Surface-
Emitting Laser is designed for Fibre
Channel, Gigabit Ethernet, ATM and
general applications. It incorporates a
photodiode to monitor the optical
power and allow for feedback control.
For eye safety, the optical power is
attenuated to comply with IEC Laser
Class 1 requirements.
Optical and Electrical Characteristics
PARAMETER
SYMBOL
MIN.
TYP
.
MAX.
UNIT
(25°C Case Temperature)
TEST CONDITION
Fiber-Coupled Power
Optical Power
Slope Efficiency
(dPo/dI
F
)
P
fiber
P
o
100
400
50
W
W
I
F
=12mA
I
F
=12mA
(Note 1)
(Note 2)
mW/A
I
F
=12mA
GHz
860
1
2.2
6
nm
nm
V
mA
A
30
nA
I
F
=12mA,
V
R
>1V
V
R
=5V
I
F
=12mA
I
F
=12mA
I
F
=12mA
I
F
=12mA
Bandwidth
(3dBel )
f
c
p
2
830
840
0.5
Peak Wavelength
Spectral Width
(FWHM)
Forward Voltage
(Fig.5)
Threshold Current
Monitor Current
Monitor Dark Current
Relative Intensity Noise
V
F
I
th
I
m
I
d
RIN
30
1.9
3.5
100
-130
dB/Hz
I
F
=12mA, f=1 GHz
Note 1:
Fiber: 50/125 Graded Index, NA=0.2 or 62.5/125 Graded Index, NA=0.275.
Note 2:
Complies with laser Class 1 when operated at max 12 mA; Class 3 above 12 mA.
Ø4.7
Ø1.5
0.6
Absolute Maximum Ratings
PARAMETER
SYMBOL
LIMIT
Storage Temperature
3.7
T
stg
Top
P
tot
I
F
I
FRM
V
R
T
sld
-55 to +125 C
0 to +70 C
35 mW
15 mA
25 mA
1.5 V
260 C
Operating Temperature
(derating: Fig.4)
14
Electrical Power Dissipation
(derating: Fig.4)
Continuous Forward Current
(f
10 kHz)
50%, f 1 MHz)
0.4
VCSEL
Cathode
MONITOR
Anode
Peak Forward Current
(duty cycle
MONITOR
Cathode
VCSEL
Anode
All dimensions in mm
VCSEL Reverse Voltage
Soldering Temperature
(2mm from the case for 10 sec)
2.5
5.47
CASE NOT CONNECTED
BOTTOM VIEW
Thermal Characteristics
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
TO-46 Package With Lens
Thermal Resistance - Infinite Heat Sink
Thermal Resistance - No Heat Sink
R
thjc
R
thja
d
/dT
j
P
Ith
500
800
0.06
0.7
0.6
C/W
C/W
nm/ C
dB
mA
Class 1 Laser Product
Temp. Coefficient -W
avelength
Optical Power - Variation 0 to 70 C
Threshold Current - Variation 0 to 70 C
13589.11 1999-04-01
Europe:
Tel
(46) 8 58 02 45 00
Fax
(46) 8 58 02 01 10
Tel
(44) 1291 436180
Fax
(44) 1291 436771
America:
Tel
1-800-96MITEL
Fax
(613) 592-6909
Asia:
Tel
(65) 293 5312
Fax
(65) 293 8527
MITEL [ MITEL NETWORKS CORPORATION ]
