Simulation of optical delay lines for Optical Coherence Tomography

Jansz, Paul; Wild, Graham; Richardson, Steven; Hinckley, Steven

doi:10.1109/iqec-cleo.2011.6194128

Cited by 4 publications

(9 citation statements)

References 3 publications

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“…This then generates an autocorrelation function with twice the layer separation. For a user defined light source spectrum and ODL, the effects of OCT sources, ODLs [4], and sample types on OCT operation, can be studied to a degree remembering that a real system presents imperfections at every point in the interferometric circuit.…”

Section: Oct Model Simulator 30mentioning

confidence: 99%

“…In previous research [4], an OCT model was used to compare different optical delay lines (ODLs) in order to verify the functionality of a proposed stationary ODL [5]. To further investigate OCT operation characteristics, the OCT model has been used to characterize one to four combined Gaussian broadband light sources which mimic the spectral characteristic of super luminescent diodes (SLDs), a typical OCT light source.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of low coherence interferometry using broadband multi-Gaussian light sources

et al. 2012

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Using a low coherence interferometry (LCI) model, a comparison of broadband single-Gaussian and multi-Gaussian light sources has been undertaken. For single-Gaussian sources, the axial resolution improves with the source bandwidth, confirming the coherence length relation that the resolution for single Gaussian sources improves with increasing spectral bandwidth. However, narrow bandwidth light sources result in interferograms with overlapping strata peaks and the loss of individual strata information. For multiple-Gaussian sources with the same bandwidth, spectral side lobes increase, reducing A-scan reliability to show accurate layer information without eliminating the side lobes. The simulations show the conditions needed for the resolution of strata information for broadband light sources using both single and multiple Gaussian models. The potential to use the model to study optical coherence tomography (OCT) light sources including super luminescent diodes (SLDs), as reviewed in this paper, as well as optical delay lines and sample structures could better characterize these LCI and OCT elements. Forecasting misinformation in the interferogram may allow preliminary corrections. With improvement to the LCI-OCT model, more applications are envisaged.

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Section: Oct Model Simulator 30mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling of low coherence interferometry using broadband multi-Gaussian light sources

et al. 2012

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“…This then generates an autocorrelation function with double the layer separation. For a user defined light source spectrum and optical delay line (ODL), the effects of OCT sources, ODLs [4] and sample types on OCT operation, can be studied. Figure 2 shows the effect of Gaussian source bandwidth on layer resolution.…”

Section: Single Source Varying Bandwidthmentioning

confidence: 99%

“…In previous research [4] an OCT model was used to compare different optical delay lines (ODL) in order to verify the functionality of a proposed stationary ODL [5]. To further investigated OCT operation characteristics, the OCT model has been used to characterize one to four combined Gaussian broadband light sources which mimic the spectral characteristic of Super Luminescent Diodes (SLDs), a typical OCT light source.…”

Section: Introductionmentioning

confidence: 99%

Low coherence interferometry modelling using combined broadband Gaussian light sources

et al. 2012

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Using a Low Coherence Interferometry (LCI) model, a comparison of broadband single-Gaussian and multi-Gaussian light sources has been undertaken. For single-Gaussian sources, the axial resolution improved with source bandwidth, confirming the coherence length relation that resolution for single Gaussian sources improves with increasing spectral bandwidth. However, narrow bandwidth light sources resulted in interferograms with overlapping strata peaks and the loss of individual strata information. For multiple-Gaussian sources with the same bandwidth, spectral side lobes increased, reducing A-scan reliability to show accurate layer information without eliminating the side lobes. The simulations show the conditions needed for resolution of strata information for broadband light sources using both single and multiple Gaussian models. The potential to use the model to study LCI and OCT light sources, optical delays and sample structures can better characterise these LCI and OCT elements. Forecasting misinformation in the interferogram, may allow preliminary corrections. With improvements to the LCI-OCT model, more applications are envisaged.

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“…The use of a Matlab OCT circuit simulation model to produce interferogram A-scans from a defined Gaussian spectral light source for a user defined stratified sample has been previously used to characterise typical OCT light sources (Jansz et al 2012) and optical delay lines (Jansz et al 2011). With this forwards model, backward fitting models (BFM) can now be tested to retro-fit certain sample parameters.…”

Section: The Forward Modelmentioning

confidence: 99%