Verfahren und System für einen Linearisierten Optischen Frequenzdiskriminator mit Hoher Geschwindigkeit und Hoher Auflösung

Details

Veröffentlichungs-Nr.

EP4579202

Aktenzeichen

EP24157345

Anmeldetag

13. Februar 2024

Veröffentlichung

2. Juli 2025

Rechtsraum

EP

IPC

G01J1/42H04B10/58G02F1/01G01J9/02G01J1/44H04B10/073

Abstract

A method of linearizing an output of an interferometer includes: obtaining an optical signal from a laser at an input of the interferometer; converting, with a first photodiode connected to an optical through-port of the interferometer and a second photodiode connected to an optical cross-port of the interferometer, a detected optical intensity of the optical signal at the optical through-port and the optical cross-port into two photocurrents using self-homodyne detection; providing the two photocurrents to a logarithmic ratio amplifier to determine a logarithmic ratio of the two photocurrents; processing the logarithmic ratio by scaling the logarithmic ratio and introducing a DC output offset voltage to provide an output voltage; and compensating for the DC output offset voltage using a differential buffer amplifier connected to the output of the logarithmic ratio amplifier to provide a DC output voltage that corresponds to a linearized output of the interferometer.

Anmelder

Firma

II-VI Delaware, Inc.

Land

🇺🇸 USA

Fachgebiete