Lasersystem, Lidar-System und Verfahren zur Verbesserung der Linearität von Frequenzchirp

Details

Veröffentlichungs-Nr.

EP4760336

Anmeldetag

10. Dezember 2024

Veröffentlichung

17. Juni 2026

Rechtsraum

EP

Abstract

According to an aspect of the present inventive concept there is provided a laser system (100) for generating a frequency modulated continuous wave, FMCW, light signal (112), the system (100) comprising: a tunable laser (110) for generating the FMCW light signal (112); an optical measurement unit (120) configured to receive a portion (114) of the FMCW 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 portion (114) of the FMCW light signal (112) wherein the second signal (114b) is delayed relative to the first signal (114a), 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) , estimate, based on the at least two angle diversity signals (124), a compensation needed for adjusting a non-linearity of a frequency chirp of the tunable laser (110), and output a corresponding control signal (132) to the tunable laser (110), wherein the control signal (132) is configured to improve a linearity of the frequency chirp.

Anmelder

Firma

Stichting IMEC Nederland

Land

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