10
SD-44 Instruction Manual
Specifications
This section contains the specifications for the SD-44 Optical-to-Electrical
Converter. All specifications are guaranteed unless noted as “typical.” Typical
specifications are provided for your convenience but are not guaranteed.
Specifications marked with the
n
symbol have corresponding checks in the
Performance Verification section on page 12.
Table 1: SD-44 Specifications
Specification
Description
Effective wavelength range, typical
1000 nm to 1650 nm
n
DC conversion gain
≥
35 mV / mW at 1310 nm
±
20 nm and 1550 nm
±
20 nm
Relative responsivity, typical
See Figure 5
Absolute maximum nondestructive optical
input
5 mW average power; 10 mW peak power at wavelength with highest relative
responsivity
n
Bandwidth
DC to 15 GHz (
≥
– 6 dB electrical power into 50
W
) for signals < 2 mW
p-p
Input fiber diameter
Accepts 9
m
m singlemode diameter; Numerical Aperture (NA)
≤
0.20
Internal fiber diameter
core: 9
m
m single-mode fiber
cladding: 125
m
m
Fiber connector style
female FC/PC
Optical return loss
> 30 dB typical; > 28 dB minimum when external mating fiber is also PC style
n
Noise equivalent power
≤
15 pW
ń
Hz
Ǹ
electrical output noise when terminated into 50
W
Impulse response width
≤
30 ps FWHM (Full Width Half Maximum)
Aberrations
≤
10%
p-p
total
n
Output zero
≤
1 mV
External termination impedance
50
W
±
2
W
Temperature
Operating: +10
_
C to +40
_
C
Non-operating: –55
_
C to +75
_
C
Humidity
75% non-condensing
Altitude
Operating: 4,572 m (15,000 ft)
Non-operating: 15,240 m (50,000 ft)