Integrated ammonia sensor using a telecom photonic integrated circuit and a hollow core Fiber

Andreas Hänsel*, Abubakar Isa Adamu, Christos Markos, Anders Feilberg, Ole Bang, Martijn J.R. Heck

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

24 Downloads (Pure)

Abstract

We present a fully integrated optical ammonia sensor, based on a photonic integrated circuit (PIC) with a tunable laser source and a hollow-core fiber (HCF) as gas interaction cell. The PIC also contains a photodetector that can be used to record the absorption signal with the same device. The sensor targets an ammonia absorption line at 1522.45 nm, which can be reached with indium phosphide-based telecom compatible PICs. A 1.65-m long HCF is connected on both ends to a single-mode fiber (SMF) with a mechanical splice that allows filling and purging of the fiber within a few minutes. We show the detection of a 5% ammonia gas concentration, as a proof of principle of our sensor and we show the potential to even detect much lower concentrations. This work paves the way towards a low-cost, integrated and portable gas sensor with potential applications in environmental gas sensing.

Original languageEnglish
Article number93
JournalPhotonics
Volume7
Issue number4
Number of pages10
ISSN2304-6732
DOIs
Publication statusPublished - Dec 2020

Keywords

  • Hollow core fibers
  • Indium phosphide
  • Optical gas sensor
  • Photonic integrated circuit

Fingerprint

Dive into the research topics of 'Integrated ammonia sensor using a telecom photonic integrated circuit and a hollow core Fiber'. Together they form a unique fingerprint.

Cite this