Optical reflectometry analysis with a time-adjustment of partial responses
AssigneeAgilent Technologies, Inc.
InventorBernd Nebendahl
Life of this patent
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Abstract
Determining a physical property of a device under test—DUT—includes receiving an optical scatter signal returning from the DUT in response to a probe signal launched into the DUT, wavelength dependent separating a first response signal and a second response signal from the scatter signal, determining a first power information of the first response signal and a second power information of the second response signal, time-adjusting the first power response and the second power response to each other in order to compensate a group velocity difference between the first response signal and the second response signal within the DUT, and determining the physical property on the base of the time-adjusted power responses.
Claims11
An optical reflectometry system for determining a property of a device under test—DUT—, comprising:
- an optical selector adapted for receiving an optical scatter signal returning from the DUT in response to a probe signal launched into the DUT, wavelength dependent separating a first response signal and a second response signal from the scatter signal,
- an optical detector adapted for determining a first power response of the first response signal and a second power response of the second response signal, and
- an analyzer adapted for time-adjusting the first power response and the second power response to each other in order to compensate a group velocity difference between the first response signal and the second response signal within the DUT, and determining the physical property on the base of the time-adjusted power responses.
A method of determining a physical property of a device under test—DUT—, comprising:
- receiving an optical scatter signal returning from the DUT in response to a probe signal launched into the DUT,
- wavelength dependent separating a first response signal and a second response signal from the scatter signal,
- determining a first power response of the first response signal and a second power response of the second response signal,
- time-adjusting the first power response and the second power response to each other in order to compensate a group velocity difference between the first response signal and the second response signal within the DUT;
- and
- determining the physical property on the base of the time-adjusted power responses.
Dependencies are inferred from the claim text.