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Development, characterisation and analysis of narrow linewidth, single-frequency DFB fibre lasers in the 1.5 µm - 2 µm region

Development, characterisation and analysis of narrow linewidth, single-frequency DFB fibre lasers in the 1.5 µm - 2 µm region
Development, characterisation and analysis of narrow linewidth, single-frequency DFB fibre lasers in the 1.5 µm - 2 µm region
The main aim of this study was to investigate the anomalous linewidth behaviour of the DFB fibre lasers, as the observed linewidths of these lasers remain far above their predicted theoretical limit based on the Schawlow-Townes linewidth formula. Narrow linewidth, single-frequency fibre lasers are attractive sources for optical coherent communication, wavelength division multiplexing, optical sensors and spectroscopy, as they have kilohertz linewidths, direct compatibility with the fibre network, wavelength tunability and are simple to fabricate. Another aim of the study was to extend the operating wavelength of the fibre DFB lasers around 2 µm, this research was driven by the number of possible applications in areas such as remote gas sensing, laser imaging detection and ranging (LIDAR) and medicine. in the fibre, a nonradiative transition in the 2 µm region and also the large intrinsic losses of the silica fibre associated with the 2.1 µm wavelength.
Voo, Nyuk Yoong
5483a337-42e4-45f7-8c5d-dc6e61b0f09b
Voo, Nyuk Yoong
5483a337-42e4-45f7-8c5d-dc6e61b0f09b
Ibsen, Morten
22e58138-5ce9-4bed-87e1-735c91f8f3b9

Voo, Nyuk Yoong (2006) Development, characterisation and analysis of narrow linewidth, single-frequency DFB fibre lasers in the 1.5 µm - 2 µm region. University of Southampton, Optoelectronic Research Centre, Doctoral Thesis, 175pp.

Record type: Thesis (Doctoral)

Abstract

The main aim of this study was to investigate the anomalous linewidth behaviour of the DFB fibre lasers, as the observed linewidths of these lasers remain far above their predicted theoretical limit based on the Schawlow-Townes linewidth formula. Narrow linewidth, single-frequency fibre lasers are attractive sources for optical coherent communication, wavelength division multiplexing, optical sensors and spectroscopy, as they have kilohertz linewidths, direct compatibility with the fibre network, wavelength tunability and are simple to fabricate. Another aim of the study was to extend the operating wavelength of the fibre DFB lasers around 2 µm, this research was driven by the number of possible applications in areas such as remote gas sensing, laser imaging detection and ranging (LIDAR) and medicine. in the fibre, a nonradiative transition in the 2 µm region and also the large intrinsic losses of the silica fibre associated with the 2.1 µm wavelength.

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More information

Published date: June 2006
Organisations: University of Southampton, Optoelectronics Research Centre

Identifiers

Local EPrints ID: 47767
URI: http://eprints.soton.ac.uk/id/eprint/47767
PURE UUID: 05e7b158-6fe2-4a53-891a-7a32996f8ed5

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Date deposited: 15 Aug 2007
Last modified: 13 Mar 2019 20:59

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Contributors

Author: Nyuk Yoong Voo
Thesis advisor: Morten Ibsen

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