User`s guide

Specifications Optical Head Specifications
30 Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition
.
[1]
Reference conditions:
• Power level 10 µW (-20 dBm), continuous wave (CW)
• Parallel beam, 3 mm spot diameter on the center of the detector
• Ambient temperature 23°C ± 5°C
• On day of calibration (add ± 0.3% for aging over one year, add ± 0.6% over two years)
• Spectral width of source < 10 nm (FWHM)
• Wavelength setting at power sensor must correspond to source wavelength ± 0.4nm
[2]
Operating Conditions:
• Parallel beam, 3mm spot diameter on the center of the detector or connectorized fiber with NA ≤ 0.2 (straight
connector)
•Averaging time 1s
• For NA > 0.2: add 1%
• Within one year after calibration, add 0.3 % for second year
• Spectral width of source < 10 nm (FWHM)
• Wavelength setting at power sensor must correspond to source wavelength ± 0.4nm
[3]
All states of polarization at constant wavelength (1550 nm ± 30 nm) and straight connector, T = 23°C ± 5°C.
For angled connector (8 û ) add 0.01 dB typ.
[4] Conditions:
• Wavelength 1550 nm ± 30 nm, fixed state of polarization
• Temperature 23°C± 5°C
•Linewidth of source ÷ 100 MHz
• Angled connector 8°
[5]
Does not include noise;
for wavelength < 1000 nm
applies for Ð 50 dBm to + 10 dBm
[6]
Averaging time 1 s, T = 23°C ± 5°C, ∆T± 1°C, observation time 300 s.
[7]
Conditions:
Wavelengths 1550nm ± 30 nm.
Standard single mode fiber, angled connector min 8°
[8]
With D-shape adapter 81001xx
Return Loss: > 60 dB typical
[9]
For input power > 2 mW
add ± 0.004 dB / mW;
zeroing required
[10]
Specification valid for optical heads with
S/N starting with “DE413…”
(shipping began April 1, 2001)
Averaging time (mini-
mal)
100 µs
Analog Output included
Dimensions 57 mm x 66 mm x 156 mm
Weight 0.5 kg
Recommended recali-
bration period
2 years
Operating temperature 0°C to 40°C
Humidity Non-condensing
Warm-up time 40 min