Recent advances in mid-IR optical fibres for chemical and biological sensing in the 2-15um spectral range

Animesh Jha; Xin Jiang; Joris Lousteau; Billy Richards; Hongxia Li; William N. MacPherson; Henry T. Bookey; James S. Barton; Ajoy Kar; Yuen H. Tsang; David J. Binks

doi:10.1117/12.840477

4 August 2009 Recent advances in mid-IR optical fibres for chemical and biological sensing in the 2-15μm spectral range

Animesh Jha, Xin Jiang, Joris Lousteau, Billy Richards, Hongxia Li, William N. MacPherson, Henry T. Bookey, James S. Barton, Ajoy Kar, Yuen H. Tsang, David J. Binks

Author Affiliations +

Proceedings Volume 7386, Photonics North 2009; 73860V (2009) https://doi.org/10.1117/12.840477
Event: Photonics North 2009, 2009, Quebec, Canada

Abstract

The invited paper explains the transmission properties of a range of near-, mid-, and far-IR optical fibres for their applications in chemical and biological sensing. Methods for the fabrication of single and multiple-core mid-IR fibres are discussed in view of controlling the thermal and viscosity properties for fibre drawing. In particular, the need for removing impurity bands in the 5000 to 1000 cm^-1 range is explained. The importance of engineering multi-core fibres is also discussed for simultaneous measurements of Raman, IR and surface plasmon enhanced modes together with say, temperature using a mid-IR transmitting tellurite fibre e.g. in a chemical process. The paper explains the principles and advantages of evanescent wave coupling of light at the resonant frequency bands for chemical sensing using a fibre evanescent wave spectroscopic sensor having a GeTeSe chalcogenide fibre. Using fibre based techniques, measurements for Cr⁶⁺ ions in solution and As³⁺ and As⁵⁺ in solids have been characterized at visible and mid-IR regions, respectively. In this paper we also explain the importance of using mid-IR fibres for engineering novel laser and broadband sources for chemical sensing.

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Animesh Jha, Xin Jiang, Joris Lousteau, Billy Richards, Hongxia Li, William N. MacPherson, Henry T. Bookey, James S. Barton, Ajoy Kar, Yuen H. Tsang, and David J. Binks "Recent advances in mid-IR optical fibres for chemical and biological sensing in the 2-15μm spectral range", Proc. SPIE 7386, Photonics North 2009, 73860V (4 August 2009); https://doi.org/10.1117/12.840477

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