Fiber multiplexing of diode laser spectroscopy-based gas detectors

Dag Roar Hjelme; Steinar Neegard; Jan S. Rambech; Noralf Ryen

doi:10.1117/12.219610

15 September 1995 Fiber multiplexing of diode laser spectroscopy-based gas detectors

Dag Roar Hjelme, Steinar Neegard, Jan S. Rambech, Noralf Ryen

Proceedings Volume 2507, Distributed and Multiplexed Fiber Optic Sensors V; (1995) https://doi.org/10.1117/12.219610
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

Abstract

Time-domain (TDM) and frequency-domain (FDM) multiplexing techniques for near-IR diode laser spectroscopy based gas sensors are described. Three multiplexing techniques are demonstrated on a passive optical fiber network with four sensors. Absorption sensitivities varying from 2.5%, for a direct detection TDM systems, to 0.01% for a frequency modulation spectroscopy FDM system, are demonstrated.

Citation Download Citation

Dag Roar Hjelme, Steinar Neegard, Jan S. Rambech, and Noralf Ryen "Fiber multiplexing of diode laser spectroscopy-based gas detectors", Proc. SPIE 2507, Distributed and Multiplexed Fiber Optic Sensors V, (15 September 1995); https://doi.org/10.1117/12.219610

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