1A444 Datasheet, PDF (1/10 Pages) Mitel Networks Corporation – VCSEL Laser Diode(Datacom, General Purpose)

PRODUCT INFORMATION
840nm
1A444
VCSEL Laser Diode
Datacom, General Purpose
This Vertical Cavity Surface-
Emitting Laser is designed for Fibre
Channel, Gigabit Ethernet, ATM and
general applications. It operates in
multiple transverse and single longi-
tudinal mode, ensuring stable cou-
pling of power and low noise.
Ø4.7
Ø1.5
0.6
3.7
14
0.4
CASE
ANODE
CATHODE
2.5
5.4
BOTTOM VIEW
The chip is isolated from the case.
TO-46 Package With Lens
WARNING: Laser Radiation, avoid exposure
to beam. Class 3B laser product, potential
eye hazard. Warning labels in each box.
Optical and Electrical Characteristics (25°C Case Temperature)
PARAMETER
SYMBOL MIN. TYP. MAX. UNIT TEST CONDITION
Fiber-Coupled Power
P_fiber
1.3
mW I_F =12mA (Note 1)
Optical Power
P_o 0.9 1.7 3.0 mW I_F =12mA
Slope Efficiency
(dP_o/dI_F)
␩
200
mW/A I_F =12mA
Bandwidth
(3dBel )
f_c
2
GHz I_F =12mA
Peak Wavelength
␭_p 830 840 860 nm I_F =12mA
Spectral Width (FWHM)
⌬␭
0.5 1 nm I_F =12mA
Forward Voltage (Fig.5)
V_F
1.9 2.2 V I_F =12mA
Threshold Current
I_th
3.5 6 mA
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.
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)
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
Thermal Resistance - No Heat Sink
Temp. Coefficient -Wavelength
Optical Power - Variation 0 to 70ЊC
R_thjc
R_thja
d␭ /dT_j
⌬P
400
700
0.06
Ϯ0.7
Threshold Current - Variation 0 to 70ЊC ⌬Ith
Ϯ0.6
UNIT
ЊC/W
ЊC/W
nm/ЊC
dB
mA
13457.11 1999-04-01
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