Optisches Sensorsystem zum Nachweis einer Chemischen Substanz

Details

Veröffentlichungs-Nr.

EP4650723

Aktenzeichen

EP24176391

Anmeldetag

16. Mai 2024

Veröffentlichung

19. November 2025

Rechtsraum

EP

IPC

G01D5/353G01N21/77

Abstract

The invention is directed at an optical sensor system for detecting a chemical substance. A fiber grating sensor responsive to the substance comprises a grating to reflect or transmit optical radiation at a reflection/transmission wavelength. The sensor comprises a radiation source, an interferometer, and an optical conveyance structure configured for conveying the interrogation signal to the fiber grating sensor. The interferometer provides a combined interference signal to at least three output ports of a coupler. Each of the at least three output ports thereby provides a respective output signal, wherein a fixed mutual phase difference is present between each two output signals. The fiber grating sensor comprises a surface coating forming an exterior casing, the surface coating being of a material that is mechanically responsive to the presence of the chemical substance ambient thereto.

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Firmen

Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO
Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO

Land

🇳🇱 Niederlande

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