System und Verfahren zur Messung der Momentanfrequenz eines Lichtsignals

Details

Veröffentlichungs-Nr.

EP4760342

Anmeldetag

10. Dezember 2024

Veröffentlichung

17. Juni 2026

Rechtsraum

EP

Abstract

According to an aspect of the present inventive concept there is provided a system (100) for measuring frequency of a light signal (112) from a chirped laser source (110), said system (100) comprising: an optical measurement unit (120) configured to receive at least a portion (114) of the light signal (112), and to output, via an optical hybrid coupler (122), at least two angle diversity signals (124) based on a difference between a first and second signal (114a, 114b) formed by splitting the at least portion (114) of the light signal (112), wherein the second signal (114b) is delayed relative to the first signal (114a), and wherein a pair of signals of the at least two angle diversity signals (124) have a fixed phase shift relative to each other; and a control unit (130) configured to: receive the at least two angle diversity signals (124), generate a complex signal, based on the at least two angle diversity signals (124), and determine an instantaneous phase of the complex signal for determining an instantaneous frequency of the light signal (112).

Anmelder

Firma

Stichting IMEC Nederland

Land

🇳🇱 Niederlande