User`s guide

Optical Head Specifications Specifications
Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition
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Table 3 High Power Optical Head Specifications
Agilent 81624B
Agilent 81624B
Calibration option
C01 / C02
Agilent 81626B
Agilent 81626B
Calibration option
C01 / C02
Sensor element
InGaAs, ∅ 5 mm InGaAs, ∅ 5mm
Wavelength range
800 nm to 1700 nm 850 nm to 1650nm
Power range
–90 dBm to +10 dBm –70 to +27 dBm (1250 nm to 1650 nm)
–70 to +23 dBm (850 nm to 1650 nm)
Applicable fiber type
Open beam
Standard SM and MM max 100 µm core size,
NA ≤ 0.3
Parallel beam max ∅ 4 mm
Standard SM and MM max 100 µm core size,
NA ≤ 0.3
Parallel beam max ∅ 4 mm
Uncertainty at refer
ence conditions
[1]
± 2.2 %
(1000nm to 1630 nm)
± 1.5 %
(970 nm to 1630 nm)
± 3.0 %
(950 nm to 1630 nm)
± 2.5 %
(950 nm to 1630 nm)
Total uncertainty
[2] ± 3.5% ± 5 pW
(1000nm to 1630 nm)
± 2.8% ± 5 pW
(970 nm to 1630 nm)
± 5.0% ± 500 pW
[8]
(950 nm to 1630 nm)
± 4.5% ± 500 pW
[8]
(950 to 1630 nm max
23 dBm)
(1250 to 1630 nm
max 27 dBm)
Relative uncertainty:
[7]
- due to polarization
[3]
- spectral ripple
(due to interference)
[4]
≤ ± 0.005 dB (typ. ± 0.002 dB)
≤ ± 0.005 dB (typ < ± 0.002 dB)
≤ ± 0.005 dB (typ. ± 0.002 dB)
≤ ± 0.005 dB (typ. < ± 0.002 dB)
Linearity (power):
[5]
- at 23 ûC ±5ûC
- at operat. temp.
range
CW –70 dBm to +10 dBm, 1000 nm to 1630 nm
< ± 0.02 dB
< ± 0.05 dB
CW – 50 dBm to + 27dBm, 950 nm to 1630 nm
< ± 0.04 dB
[8]
< ± 0.15 dB
[8]
Return loss
[7]
typ. 60 dB > 45 dB > 47 dB
Noise (peak to peak)
[6] < 5 pW < 500 pW
Averaging time (min.)
100 µs 100 µs
Analog Output
included Included
Dimensions
57 mm x 66 mm x 156 mm 57 mm x 66 mm x 156 mm
Weight
0.5 kg 0.5 kg
Recommended recali
bration period
2 years 2 years