Low-concentration detection of CO2 using suspended silicon waveguides in the mid-IR

• We show detection of CO2 concentrations as low as 500 ppm using a suspended silicon photonic mid-IR waveguide. The performance is enabled by the low propagation loss (2.35 ±0.25) dB/cm permitting sensing with waveguides up to 7 cm in length. 

Ämnesord

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Nyckelord

Carbon dioxide

Silicon photonics

CO 2 concentration

Concentration detections

Is-enabled

Low concentrations

Low propagation loss

Performance

Silicon waveguide

Waveguides

Publikations- och innehållstyp

ref (ämneskategori)

kon (ämneskategori)