Atec Agilent-81618A - Manual (Page 28)

Specifications Optical Head Specifications
28
Agilent 81618A/9A and Agilent 81622B/3B/4B/6B/7B/8B User’s Guide, Second Edition
Warm-up time 40 minutes
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 meter must correspond to source wavelength
± 0.4 nm
2 Total uncertainty includes: polarization, interference, linearity conditions:
• Parallel beam, 3mm spot diameter on the center of the detector or connectorized fiber with NA
≤ 0.2
(straight connector); for 81627B 2mm spot diameter
• For NA > 0.2, add 1%
• For 81627B and MM fiber add 1%
• Within one year after calibration, add 0.3% for second year
• Operating temperature range as specified; humidity: non-condensing
3 All states of polarization at constant wavelength (1550 nm ± 30 nm) and constant power, straight
connector, T = 23°C ± 5°. For angled connector (8°) add 0.01 dB typ.
4 Conditions:
Wavelength 1550 nm ± 30 nm, fixed state of polarization, constant power, Temperature 23°C ± 5°C,
Linewidth of source
≥ 100 MHz, angled connector 8°.
5 At constant temperature (
∆T = ± 1°C), zeroing required.
6 Averaging time 1s, T = 23°C ± 5°C, observation time 300 s. Wavelength range 1200 - 1630 nm.
7 Conditions
• Wavelengths 1550 nm
± 30 nm.
• Standard single-mode fiber, angled connector min 8
°.
8 For input power > 2 mW, add ± 0.004 dB / mW
9 30°C for > +20 dBm input power
10 For input power >+10 mW add:
typ. ± 0.0016 dB / mW without Agilent 81000AF, or add
± 0.0008 dB / mW with Agilent 81000AF (direct coupled)
In the case of a negative power change >50 dB allow an addition recovery time of 3 minutes.
11 Specification valid for optical heads with S/N starting with "DE413..." or higher.
Table 2 Optical Head Specifications
Agilent 81623B Agilent 81624B Agilent 81627B