Atec Agilent-8156A - Manual (Page 4)

Page 4 of 8
Variable Optical Attenuator Modules (Single Mode Fibers)
81570A 81571A
Connectivity straight connector
versatile interface
angled connector
versatile interface
Fiber type 9/125
µm SMF28
Wavelength range 1200 nm – 1700 nm
Attenuation range 0 – 60 dB
Resolution 0.001 dB
Repeatability [1] ± 0.01 dB
Accuracy (uncertainty) [1], [2], [3], [4] ± 0.1 dB (at 1550 nm)
typ.
± 0.1 dB (1250 nm – 1650nm)
Settling time [5] typ. 100 ms
Transition speed typ. 0.1 – 12 dB/s
Attenuation flatness [1], [4], [6], [8] ± 0.07 dB; typ. ± 0.05 dB (1520 nm < λ < 1620 nm)
typ.
± 0.10 dB (1450 nm < λ < 1640 nm)
Spectral ripple [7] typ. ± 0.003 dB
Insertion loss [2], [4], [9], [10] typ. 0.7 dB (excluding connectors)
1.6 dB; typ. 1.0 dB (including connectors) [11]
Insertion loss flatness [1], [11] typ.
± 0.1 dB (1420 nm < λ <1615 nm) [4]
Polarization dependent loss [2], [11] 0.08 dBpp; typ. 0.03 dBpp (at 1550nm ± 15nm)
Return loss [11] typ. 45 dB
(at 1550nm ± 15nm)
typ. 57 dB
(at 1550nm ± 15nm)
Maximum input power [12] +33 dBm
Shutter isolation typ. 100 dB
Dimensions (H x W x D) 75 mm x 32 mm x 335 mm (2.8” x 1.3” x 13.2”)
Weight 0.9 kg
Recommended recalibration
period 2 years
Operating temperature 10°C – 45°C
Humidity Non-condensing
Warm-up time
30 minutes
[1] At constant operating conditions
[2] Temperature within 23°C ± 5°C
[3] Input Power < +30 dBm
[4] For unpolarized light
[5] Step size < 1 dB, for full range: typ. 6 seconds
[6] Relative to reference at 0 dB attenuation
[7] Linewidth of source ≥ 100 MHz
[8] λ
disp
set to 1550 nm; attenuation
≤ 20 dB;
for attenuation > 20 dB:
add typ. 0.01 dB (
α [dB] – 20) for 1520 nm < λ < 1620 nm
add typ. 0.02 dB (
α [dB] – 20) for 1450 nm < λ < 1640 nm
[9] For λ = 1550 nm ± 15 nm
[10] Add typ. 0.1 dB for λ = 1310 nm ± 15 nm
[11] Measured with Agilent reference connectors
[12] Agilent Technologies Deutschland GmbH assumes no responsibility for damages caused by scratched or poorly cleaned connectors.