Abstract
This paper describes an optical fibre near infrared Carbon Dioxide sensor. Using an integrating sphere as a test cell, increased path length is achieved due to multiple reflections within the sphere. Carbon dioxide is input into the sphere via an unused optical port. Light from a C + L band ASE source is transmitted through the sphere and any absorption is detected using a near infrared spectrometer. A change in optical intensity was observed at a wavelength of 1.59 um when carbon dioxide was present from which the carbon dioxide concentration can be determined.
Original language | English |
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Pages (from-to) | 250-255 |
Number of pages | 6 |
Journal | Journal of Physics: Conference Series |
Volume | 15 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 2005 |