The Open UniversitySkip to content
 

A systematic comparison and evaluation of three different Swept-Source interferometers for eye lengths biometry

Al-Mohamedi, Haroun; Kelly-Pérez, Ismael; Prinz, Andreas; Oltrup, Theo; Leitritz, Martin; Cayless, Alan and Bende, Thomas (2019). A systematic comparison and evaluation of three different Swept-Source interferometers for eye lengths biometry. Zeitschrift für Medizinische Physik, 29(1) pp. 16–21.

Full text available as:
[img]
Preview
PDF (Accepted Manuscript) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (249kB) | Preview
DOI (Digital Object Identifier) Link: https://doi.org/10.1016/j.zemedi.2018.05.004
Google Scholar: Look up in Google Scholar

Abstract

This study reviews the development of Swept-Source interferometers and compares systematically three different Swept-Source interferometer designs for biometric measurements of the eye. Principles characteristics, conveniences and accessibilities of the three developed systems are presented.

The main difference between the three Swept-Source systems is the method of tuning the wavelength at the broadband optical amplifier.

The implementation of a “quasi-phase-continuous method” (QPC) for wavelength tuning led to longer measuring depth but was more time-consuming. The wavelength tuning using a rotating polygon mirror scanner was faster.

The wavelength tuning via Fourier Domain Mode Locking (FDML), where the tuning frequency ft of the filter must be matched to the inverse cavity roundtrip time τ, achieved the widest tuning range combined with a rather better resolution and signal to noise ratio (SNR).

The swept sources were compared using a fiber-optic based Michelson interferometer setup. Measurements of a self-made human model eye demonstrate excellent capturing of the biometric data, with all interfaces of eye optical components and their contours being clearly detected.

Item Type: Journal Item
Copyright Holders: 2018 Elsevier GmbH
ISSN: 0939-3889
Keywords: Swept-Source; partial coherence; interferometry; measuring depth
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 55408
Depositing User: Alan Cayless
Date Deposited: 11 Jun 2018 09:45
Last Modified: 03 Jun 2019 21:11
URI: http://oro.open.ac.uk/id/eprint/55408
Share this page:

Metrics

Altmetrics from Altmetric

Citations from Dimensions

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU