Main characteristics and technical indicators
Miniature fiber for optimal modal transmission distribution
Built-in power monitoring for accurate power setting and stabilization
Wavelength range: 800 to 1370 nm
Attenuation range: 0 to 35 dB
Relative power monitoring uncertainty: ±0.1 dB + 300 pW
Settling time: 200 ms typical
Conversion speed: from 0.1 to 80 and 1000 dB/s
Optical path blocking: >60 dB typical
description
The optical attenuator is used to flexibly control the power of the optical signal in the test device. Its main application is to determine the sensitivity of the optical receiver by measuring the change in BER with the power of the input signal. The N7766A and N7768A provide two or four attenuator channels for multimode fiber devices and 50 μm or 62.5 μm fiber ports, respectively. By monitoring the output power, accurate and stable power settings can be achieved at any input power. Using a convenient biasing parameter, the set power can be matched to the signal after the other optical components in the test device path.
