IC212 Datasheet, PDF (7/15 Pages) IC-Haus GmbH – HIGHSPEED PHOTORECEIVER

iC212
HIGHSPEED PHOTORECEIVER
APPLICATION NOTES
These application notes are meant to demonstrate
some typical measurement tasks, carried out with the
iC212 and verified with a standard optical power meter.
Mesurement of total optical output power P_opt
1. Put laser in pulse mode
2. Adjust lens, for maximum amplitude at the output
of iC212 (Fig. 6)
3. Read amplitude: U = 0.803 V (Fig. 7)
Calculation: λ = 635 nm, spectral response taken
from Figure 4: S(@635 nm) = 1.34 V/mW
U 0.803 V
P_opt (iC212) = _S
=
1.34
V
mW
= 0.60 mW
4. Put laser in CW mode
5. Put Newport sensor into laser beam and read the
power: P_opt(Newport) = 0.641 mW (Fig. 8)
The results match within 7%.
preliminary
Rev A2, Page 7/15
Figure 7: Oscilloscope reading
Figure 8: Total optical output power with 1 cm² sen-
sor (Newport)
Figure 6: The laser light focused with a collecting
lens onto the sensor