Analog Coaxial Pigtailed
Laser Module
Technical Data
•Compact Coaxial Package
•Strained Multi Quantum Well (SMQW) Laser Chip
•Low Thresholds Current and Operating Currents
•Wide Operating Temperature –40°C to +85°C
•Optical Power May Be Customized up to 2 mW
•Convenient Variety of Pinout and Mounting Flange Options
•CATV/CCTV
•Return Path Links
•LANS/WANS
The LSAX82X is a compact analog coaxial pigtailed laser transmitter, operating in the 1300 nm wavelength region and coupling light to single mode fiber.
The device features a high reliability SMQW laser diode and rear facet monitor photodiode. These are electrically connected to four pins in an industrystandard configuration.
Environmental performance is designed to be compatible with the requirements of Bellcore’s TA-NWT-000983 document.
LSA2825 - Analog
Coaxial Laser
LSA3821 - Dual-in-Line
Package
If the specific arrangement or performance you require is not listed, please contact your local representative, as our highly flexible design and manufacturing processes allow both physical and electro-optical customization to meet your needs.
Laser Safety Warning
This device is a Class IIIb (3b) Laser Product. It may emit invisible laser radiation if operated with the fiber pigtail disconnected. To avoid possible eye damage do not look into an unconnected fiber pigtail during laser operation. Do not exceed specified operating limits.
526 |
5965-7337E (5/97) |
Absolute limiting (maximum) ratings mean that no catastrophic damage will occur if the product is subjected to these ratings for short periods, provided that each limiting parameter is in isolation and all other parameters have values within the performance specification. It should not be assumed that limiting values of more than one parameter can be applied to the product at the same time.
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Limits |
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Parameter |
Symbol |
Test Condition |
Min. |
Max. |
Units |
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Laser Forward Current |
If |
DC |
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120 |
mA |
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Laser Reverse Voltage |
Vlr |
DC |
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2 |
V |
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Photodiode Reverse Voltage |
Vr |
DC |
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20 |
V |
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Photodiode Forward Current |
Ipf |
DC |
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1 |
mA |
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Operating Temperature |
Tc |
Temperature measured at case |
–40 |
+85 |
°C |
Storage Temperature |
Ts |
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–40 |
+85 |
°C |
Relative Humidity |
RH |
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noncondensing |
%RH |
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Fiber Pull Strength |
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Three times; 10 sec. |
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10 |
N |
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Mechanical Shock |
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MIL-STD-883D, Method 2002, |
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500 |
G |
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Condition A |
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Vibration |
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MIL-STD-883D, Method 2007, |
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20 |
G |
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Condition A |
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LSA2825 |
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LSA3821 |
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Parameter |
Symbol |
Test Condition |
Min. |
Max. |
Units |
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LASER |
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CW, Tc = –40°C to +85°C, Po as |
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noted below unless otherwise |
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stated |
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Rated Optical Power |
Po |
CW |
1.0 |
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mW |
Threshold Current |
Ith |
Tc = +25°C |
3.5 |
10 |
mA |
Threshold Current |
Ith |
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1 |
30 |
mA |
Slope Efficiency |
η |
Tc = +25°C |
30 |
80 |
μW/mA |
Drive Current above Ith, |
Id |
Tc = +25°C |
12.5 |
33.3 |
mA |
for Im = Im (Po, +25°C) |
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Tc = –40°C to +85°C |
10 |
55 |
mA |
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Forward Voltage |
Vf |
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1.6 |
V |
Center Wavelength |
λ |
Tc = +25°C |
1286 |
1336 |
nm |
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Tc = –40°C to +85°C |
1260 |
1360 |
nm |
Wavelength/Temperature |
Δλ/ T |
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0.4 |
nm/°C |
Coefficient |
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Spectral Width |
σ |
One sigma, RMS |
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2.5 |
nm |
MONITOR PHOTODIODE |
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Tc = +25°C, Vr = 5 V |
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Photocurrent |
Im |
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200 |
1000 |
μA |
Dark Current |
Id |
Po = 0 μW |
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20 |
nA |
Capacitance |
C |
1 MHz |
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10 |
pF |
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Tracking Error |
DP |
Im = Im (Po, +25°C) |
–1 |
+1 |
dB |
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Tc + –40°C to + 85°C |
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527