Methane detection using an interband-cascade LED coupled to a hollow-core fiber
Abstract
Midwave infrared interband-cascade light-emitting devices (ICLEDs) have the potential to improve the selectivity, stability, and sensitivity of low-cost gas sensors. We demonstrate a broadband direct absorption CH4 sensor with an ICLED coupled to a plastic hollow-core fiber (1 m length, 1500 µm inner diameter). The sensor achieves a 1σ noise equivalent absorption of approximately 0.2 ppmv CH4 at 1 Hz, while operating at a low drive power of 0.5 mW. A low-cost sub-ppmv CH4 sensor would make monitoring emissions more affordable and more accessible for many relevant industries, such as the petroleum, agriculture, and waste industries.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 22, 2021
- Source ID
- 10.1364/oe.415724
Entities
People
- Chadwick L. Canedy
- Charles D. Merritt
- Chul Soo Kim
- Hongming Yi
- I. Vurgaftman
- Jerry R. Meyer
- Lei Tao
- Mark A. Zondlo
- Mijin Kim
- Nathan Li
- William W. Bewley
Organizations
- Office of Naval Research
- Office of the Dean for Research, Princeton University
- Princeton University
- United States Naval Research Laboratory