Document
PRODUCT INFORMATION
840nm
1A444
VCSEL Laser Diode
Datacom, General Purpose
This Vertical Cavity SurfaceEmitting Laser is designed for Fibre Channel, Gigabit Ethernet, ATM and general applications. It operates in multiple transverse and single longitudinal mode, ensuring stable coupling of power and low noise.
Optical and Electrical Characteristics
PARAMETER SYMBOL MIN. TYP . MAX. UNIT
(25° C Case Temperature) TEST CONDITION
Fiber-Coupled Power Optical Power Slope Efficiency
(dPo/dIF)
Pfiber Po
1.3 0.9 1.7 200 2 830 840 0.5 1.9 3.5 -130 860 1 2.2 6 3.0
mW mW
IF =12mA IF =12mA
(Note 1)
fc
p
mW/A IF =12mA GHz nm nm V mA dB/Hz IF =12mA, f=1 GHz IF =12mA IF =12mA IF =12mA IF =12mA
Bandwidth
(3dBel )
Peak Wavelength Spectral Width (FWHM) Forward Voltage (Fig.5) Threshold Current Relative Intensity Noise
⌬ VF Ith RIN
Note 1: Fiber: 50/125 Graded Index, NA=0.2 or 62.5/125 Graded Index, NA=0.275.
Absolute Maximum Ratings
PARAMETER SYMBOL LIMIT
Storage Temperature
Ø4.7 Ø1.5 0.6
Tstg Top Ptot IF IFRM VR Tsld
-55 to +125Њ C 0 to +70Њ C 35 mW 15 mA 25 mA 1.5 V 260ЊC
Operating Temperature (derating: Fig.4) Electrical Power Dissipation (derating: Fig.4)
3.7
Continuous Forward Current (fр10 kHz)
14
Peak Forward Current (duty cycle р50%, fу1 MHz) Reverse Voltage
0.4
CASE
Soldering Temperature (2mm from the case for 10 sec)
All dimensions in mm
CATHODE
ANODE
Thermal Characteristics
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
2.5 5.4 BOTTOM VIEW
Thermal Resistance - Infinite Heat Sink Thermal Resistance - No Heat Sink Temp. Coefficient -W avelength Optical Power - Variation 0 to 70ЊC
Rthjc Rthja d /dTj ⌬P ⌬Ith
400 700 0.06 Ϯ0.7 Ϯ0.6
ЊC/W ЊC/W nm/ЊC dB mA
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.
Threshold Current - Variation 0 to 70ЊC
13457.11 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
VCSEL Laser Diode
1A444
840nm
%
120
P o vs T FIGURE 1
RELATIVE THRESHOLD CURRENT
%
120
Ith
vs
T
%
100
FIGURE Po vs I3 f
100
100
80
RELATIVE OPTICAL POWER
80
80
RELATIVE OPTICAL POWER
0 20 40 60 80 100ЊC
60
60
60
40
40
40
20
20 0 20 40 60 80 100ЊC
20
0 0 4 8 12 16 20 mA
OPERATING TEMPERATURE
OPERATING TEMPERATURE
FORWARD CURRENT
mA
20
If
vs
Vf
MAX. ELECTRICAL POWER DISSIPATION
mW
50
FIGURE 5 P el vs T
40
INFINITE HEAT SINK
FORWARD CURRENT
30
10
20
NO HEAT SINK
10
0 0 1 2 3V
0 0 20 40 60 80 100ЊC
FORWARD VOLTAGE
OPERATING TEMPERATURE
%
100
Pf
FIGURE 6 vs z Alignment
r r = opt. Øc = 50 µm
%
100
Pf
FIGURE 7 vs r Alignment
r z = opt. Øc = 50 µm
RELATIVE FIBER-COUPLED POWER
80
z
RELATIVE FIBER-COUPLED POWER
80
z
60
60
40
40
20
20
0 1.0 1.5 2.0 2.5 3.0 3.5 mm
0 0 10 20 30 40 50 µm
z - AXIAL DISPLACEMENT OF FIBER
r - RADIAL DISPLACEMENT OF FIBER
Clip for SC-2A
R 1.00 3.3000
5.6000 80,000 20.8200
0.5000
10,2500
10.3000
4.9500
0.5000 4.5000
5.0800
3.6450
Clip for Pigtail-3A
10.70 0.50
10.25
10.30
4.95
0.50 4.50 0.85 5.08
3.65
PRODUCT INFORMATION ST -2A
Package
Emitter or Detector in ST ® Package
Mitel emitters and detectors can be provided in this low-profile ST ® package. The device is electrically isolated from the ST ® receptacle to facilitate electrical connection. And optimum fiber-coupled power or responsivity is ensured by active alignment against the fiber.
Absolute Maximum Ratings
PARAMETER SYMBOL LIMIT
Operating & Storage Temperature
ST-2A (Note 1)
Tstg , Top
-40 to +85Њ C
Note 1: Temperature range can be extended to -55° to +125°C on request.
Thermal Characteristics
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
Thermal Resistance - Infinite Heat Sink
(Note 2)
Rthcc Rthca Rthca 80
40 200
ЊC/W ЊC/W ЊC/W
Thermal Resistance - No Heat Sink
(Note 2)
Thermal Resistance - On PC Board
(Note 2)
Note 2: Add Rthjc for emitter or detector to estimate the total thermal resistance.
2-56 UNC - 2B max.0.5 3/8"-32 UNEF FIBER END
MARKING SIDE SLOT SIDE
0.006
Ø2.502 +0.01 0
12.7
9.5
Ø2.5 +0 -0.004
7.89
7.6 min.12
3.9 5.4 20.1 MATING FERRULE* (not included)
All Dimensions in mm
*The fiber-coupled power/responsivity is guaranteed to meet the LED/PIN data sheet - provided a ferrule meeting this specification is used.
Mechanical Outline of Diode in ST-2A Housing
(ST is a registered trademark of AT&T)
103326 1994-09-20
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
PRODUCT INFORMATION SMA-2A
Package
Emitter or Detector in SMA Package
Mitel emitters and detectors can be provided in this low-profile SMA package. The device is electrically isolated from the SMA receptacle to facilitate electrical conne.