SYSTEM AND METHOD FOR STABILIZATION OF MULTI-PATH OPTICAL INTERFEROMETERS

A system and a method for phase extraction of a multi-path interferometer, the method comprising generating a reference signal of a coherence length longer than an arm length difference of the multi-path interferometer; splitting the reference signal into a frequency shifted reference signal and an...

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Bibliographic Details
Main Authors ROZTOCKI, PIOTR, ZHANG, YANBING, KUES, MICHAEL, HELSTEN, ROBIN, JESTIN, YOANN, FISCHER, BENNET, SCIARA, STEFANIA, MORANDOTTI, ROBERTO, REIMER, CHRISTIAN, ISLAM, MEHEDI
Format Patent
LanguageEnglish
French
Published 28.02.2021
Subjects
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
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Summary:A system and a method for phase extraction of a multi-path interferometer, the method comprising generating a reference signal of a coherence length longer than an arm length difference of the multi-path interferometer; splitting the reference signal into a frequency shifted reference signal and an unshifted reference signal; recombining the frequency shifted reference signal and the unshifted reference signal into a polarization- and frequency- multiplexed reference signal, and feeding the polarization- and frequency- multiplexed reference signal to the multi-path interferometer; detecting frequency shifted and unshifted output signals of the multi-path interferometer; and determining the interferometer phase from the detected signal.
Bibliography:Application Number: CA20203091463