Details

Autor(en) / Beteiligte

• Robinson, Jacob T
• Chen, Long
• Lipson, Michal

Titel

On-chip gas detection in silicon optical microcavities

Ist Teil von

• Optics express, 2008-03, Vol.16 (6), p.4296-4301

Ort / Verlag

United States

Erscheinungsjahr

2008

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• We demonstrate a chip-scale photonic system for the room-temperature detection of gas composition and pressure using a slotted silicon microring resonator. We measure shifts in the resonance wavelength due to the presence and pressure of acetylene gas and resolve differences in the refractive index as small as 10(-4) in the near-IR. The observed sensitivity of this device (enhanced due to the slot-waveguide geometry) agrees with the expected value of 490 nm/refractive index unit.