Next Article in Journal
Design of a Covert RFID Tag Network for Target Discovery and Target Information Routing
Next Article in Special Issue
Brillouin Corrosion Expansion Sensors for Steel Reinforced Concrete Structures Using a Fiber Optic Coil Winding Method
Previous Article in Journal
Genetic Algorithm for the Design of Electro-Mechanical Sigma Delta Modulator MEMS Sensors
Previous Article in Special Issue
Power Loss Characteristics of a Sensing Element Based on a Polymer Optical Fiber under Cyclic Tensile Elongation
Article Menu

Export Article

Open AccessArticle
Sensors 2011, 11(10), 9233-9241; https://doi.org/10.3390/s111009233

A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers

1
Interdisciplinary Photonics Laboratories (iPL), School of Chemistry, University of Sydney, 2006, NSW, Australia
2
Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, 2006, NSW, Australia
3
SMAPS, University of Newcastle, Callaghan, NSW 2308, Australia
*
Author to whom correspondence should be addressed.
Received: 17 August 2011 / Revised: 13 September 2011 / Accepted: 23 September 2011 / Published: 27 September 2011
(This article belongs to the Special Issue Optical Fiber Sensors 2012)
View Full-Text   |   Download PDF [597 KB, uploaded 21 June 2014]

Abstract

Linewidth measurements of a distributed feedback (DFB) fibre laser are made using delayed self heterodyne interferometry (DHSI) with both Mach-Zehnder and Michelson interferometer configurations. Voigt fitting is used to extract and compare the Lorentzian and Gaussian linewidths and associated sources of noise. The respective measurements are wL (MZI) = (1.6 ± 0.2) kHz and wL (MI) = (1.4 ± 0.1) kHz. The Michelson with Faraday rotator mirrors gives a slightly narrower linewidth with significantly reduced error. This is explained by the unscrambling of polarisation drift using the Faraday rotator mirrors, confirmed by comparing with non-rotating standard gold coated fibre end mirrors. View Full-Text
Keywords: coherent optical effects; heterodyne; interferometry; DFB; laser linewidth; faraday rotation; Mach-Zehnder interferometer; Michelson interferometer; Gaussian noise; Lorentzian noise coherent optical effects; heterodyne; interferometry; DFB; laser linewidth; faraday rotation; Mach-Zehnder interferometer; Michelson interferometer; Gaussian noise; Lorentzian noise
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Canagasabey, A.; Michie, A.; Canning, J.; Holdsworth, J.; Fleming, S.; Wang, H.-C.; Åslund, M.L. A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers. Sensors 2011, 11, 9233-9241.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top