SYSTEMS AND METHODS/PROCESSES FOR OPTICAL INTERFEROMETRIC SENSING

A system including: an optical source configured to provide at least one first optical beam and at least one second optical beam; an interferometer including: at least one first optical path for the at least one first optical beam, at least one second optical path for the at least one second optical...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	GRAY, Malcolm Bruce, CHOW, Jong Hann, ZHANG, Ya, WONG, Justin Chak Tin, SIBLEY, Paul George, BANDUTUNGA, Chathura Priyankara, DEY, Anneshwa
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FREQUENCY-CHANGING MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MULTIPLEX COMMUNICATION NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TESTING TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A system including: an optical source configured to provide at least one first optical beam and at least one second optical beam; an interferometer including: at least one first optical path for the at least one first optical beam, at least one second optical path for the at least one second optical beam, at least one modulator configured to modulate the first optical beam and/or the second optical beam based on at least one digital modulation sequence, and an optical combiner/detector configured to detect interference fringes between the first and second optical beams after the first and second optical beams have traversed the first and second optical paths; and an electronic processing system including: a receiver element ("receiver") configured to receive from the optical combiner/detector an interference signal that is indicative of an interferometer phase, which is an optical phase difference between the first and second optical beams, a demodulator configured to obtain/generate at least one decoding output by demodulating the interference signal using at least one digital demodulation sequence that is associated with the at least one digital modulation sequence, and a phase output element configured to determine/generate the interferometer phase based on the at least one decoding output, wherein the at least one digital modulation sequence or the at least one digital demodulation sequence is based on a plurality of digital sequences, which include a first digital sequence and a second digital sequence, wherein the second digital sequence is based on a time-shifted version of the first digital sequence by an offset delay, and wherein: the offset delay is selected to correspond to a delay not already associated with a physical signal in the interferometer; or - 51 - 23316027.1:DCC the at least one digital modulation sequence or the at least one digital demodulation sequence includes a compound digital sequence based on the first digital sequence and the second digital sequence combined according to a linear algebraic operation; or the first optical beam and/or the second optical beam are modulated and combined according to a linear algebraic operation; or a plurality of the at least one decoding output are combined according to a linear algebraic operation.