2B454 Datasheet, PDF (1/10 Pages) Mitel Networks Corporation – VCSEL Laser Diode(Datacom)

PRODUCT INFORMATION
840nm
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.
Ø4.7
Ø1.5
0.6
3.7
14
0.4
VCSEL Cathode
MONITOR Anode
VCSEL
Anode
MONITOR
Cathode
2.5
5.47
CASE NOT CONNECTED
BOTTOM VIEW
TO-46 Package With Lens
Class 1 Laser Product
13589.11 1999-04-01
Optical and Electrical Characteristics (25°C Case Temperature)
PARAMETER
Fiber-Coupled Power
Optical Power
SYMBOL MIN.
P_fiber 100
P_o
TYP. MAX. UNIT
␮W
400 ␮W
TEST CONDITION
I_F =12mA (Note 1)
I_F =12mA (Note 2)
Slope Efficiency
(dP_o/dI_F)
␩
50
mW/A I_F =12mA
Bandwidth
(3dBel )
f_c
2
GHz I_F =12mA
Peak Wavelength
Spectral Width (FWHM)
Forward Voltage (Fig.5)
␭_p 830 840 860 nm I_F =12mA
⌬␭
0.5 1 nm I_F =12mA
V_F
1.9 2.2 V I_F =12mA
Threshold Current
Monitor Current
Monitor Dark Current
I_th
3.5 6 mA
I_m 30 100
␮A I_F =12mA, V_R>1V
I_d
30 nA V_R=5V
Relative Intensity Noise RIN
-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.
Absolute Maximum Ratings
PARAMETER
Storage Temperature
Operating Temperature (derating: Fig.4)
Electrical Power Dissipation (derating: Fig.4)
Continuous Forward Current (fр10 kHz)
Peak Forward Current (duty cycleр50%, fу1 MHz)
VCSEL Reverse Voltage
Soldering Temperature (2mm from the case for 10 sec)
SYMBOL
T_stg
Top
P_tot
I_F
I_FRM
V_R
T_sld
LIMIT
-55 to +125ЊC
0 to +70ЊC
35 mW
15 mA
25 mA
1.5 V
260ЊC
Thermal Characteristics
PARAMETER
SYMBOL MIN. TYP. MAX.
Thermal Resistance - Infinite Heat Sink R_thjc
500
Thermal Resistance - No Heat Sink
R_thja
800
Temp. Coefficient -Wavelength
d␭ /dT_j
0.06
Optical Power - Variation 0 to 70ЊC
⌬P
Ϯ0.7
Threshold Current - Variation 0 to 70ЊC ⌬Ith
Ϯ0.6
UNIT
ЊC/W
ЊC/W
nm/ЊC
dB
mA
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