Keysight N4372E, User Manual

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108 Keysight N4372E Lightwave Component Analyzer User’s Guide
6 Definition of Terms
The instrument lightwave source and receiver are individually
characterized in the factory, from the ruggedized 1.0 mm female to female
adapter on Port A to the optical output, and from the optical input to the
ruggedized 1.0 mm female to female adapter Port B, respectively.
This electro-optical calibration is provided by Keysight, and includes the
two Y1900D ruggedized 1.0 mm adapters supplied and connected to the
optical test set. The calibration is with respect to the optical connectors on
the front of the optical test set. Whenever there are additional optical
adapters or elements connecting to the device under test, these optical
paths can be accounted for by "optical path deeembedding" (see “ Optical
Path Deembedding on page 86).
The systematic responses of these two stages of calibration can then be
deembedded, yielding the response of the device under test (DUT). (See
Signal Relationships in Opto-Electric Devices on page 98 for more detail.)