HFE4093-332 Finisar Corporation, HFE4093-332 Datasheet - Page 4

• Manufacturer Part Number: HFE4093-332
• Description: Laser Diode VCSELs-LD 870nm 1mW 3-Pin TO-46
• Manufacturer: Finisar Corporation
• Type: VCSELs-LDr

Specifications of HFE4093-332

• Package: 3TO-46
• Maximum Optical Output Power: 1 mW
• Maximum Optical Output Power Range: 200 to 2 uW to mW
• Maximum Operating Current: 10 mA
• Maximum Dark Current: 20 nA
• Laser Reverse Voltage: 5 V
• Wavelength: 870 nm

HFE4093-332
NOTES
1.
2.
3.
TYPICAL PERFORMANCE CURVES
Emitted Power vs. Current: Power varies approximately
linearly with current above threshold.
TYPICAL CHARACTERISTICS OF SINGLE
MODE VCSELS
They are even more sensitive to ESD than are multi-mode
VCSELs or CD lasers. They operate at currents typically below
5 mA and should never be driven at much higher currents.
The spectral peak shifts significantly with current, but shifts
only slowly with ambient temperature. Operation at a
particular wavelength can be achieved by first setting
the current at an appropriate level, then adjusting the
temperature.
Operating power is set by the peak operating current
I
Operation at temperatures outside the specified
range may result in the threshold current exceeding
the maximums defined in the electro-optical
characteristics table.
Slope efficiency is defined as ∆Po/ ∆IF
PEAK
=I
I th
BIAS
+I
MODULATION
Typical operating current / power
850NM SINGLE MODE VCSEL
η
.
Current
Pmax
4.
5.
Threshold Current vs. Temperature: Threshold current varies
parabolically with temperature; thus it can be nearly constant
for a limited temperature range.
While they are designed to stay single mode over the whole
operating current range, at very high currents they may
become multi-mode, increasing the spectral width and the
beam divergence. Despite their low operating currents, these
VCSELs can emit sufficient power to be categorized as Class 3
lasers, and should be treated with the usual precautions.
Rise and fall times are sensitive to drive electronics
To safeguard the VCSEL from current spike damage, short
the VCSEL anode and cathode to each other during
photodiode BVR verification testing. Additionally to
safeguard the PIN photodiode, limit the photodiode
reverse voltage in accordance with the absolute
maximum rating.
I
TH
I
Temperature
MIN
T
[1.1×10
MIN
, I
MIN
-4
(T-T
MIN
)
2
+1]