Mr. Paul Vernon Jansz Profile

Paul Vernon Jansz

Ph.D. Student

SPIE Involvement:

Author

Area of Expertise:

CMOS imaging and low coherence interferometry

Publications (10)

SPIE Journal Paper | 5 August 2014 Open Access

Characterizing the resolvability of real superluminescent diode sources for application to optical coherence tomography using a low coherence interferometry model

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

JBO, Vol. 19, Issue 08, 085003, (August 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.8.085003

KEYWORDS: Point spread functions, Optical coherence tomography, Light sources, Satellites, Quantum wells, Skin, Refractive index, Superluminescent diodes, Statistical modeling, Interfaces

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Proceedings Article | 31 January 2012 Paper

Low coherence interferometry modelling using combined broadband Gaussian light sources

Paul Jansz, Graham Wild, Steven Richardson, Steven Hinckley

Proceedings Volume 8351, 83510C (2012) https://doi.org/10.1117/12.916030

KEYWORDS: Optical coherence tomography, Light sources, Tissue optics, Interferometry, Modeling, Spectral resolution, Statistical modeling, Refractive index, Tissues, Reliability

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Proceedings Article | 24 December 2011 Paper

Simulation of crosstalk and quantum efficiency in high-resolution UV-blue imaging arrays

Paul Jansz, Steven Hinckley

Proceedings Volume 8204, 82042X (2011) https://doi.org/10.1117/12.903295

KEYWORDS: Photodiodes, Quantum efficiency, Imaging arrays, Back illuminated sensors, Diffusion, Image resolution, Doping, Absorption, Silicon, Semiconducting wafers

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Proceedings Article | 24 December 2011 Paper

An extended analytical model to simulate an optical coherence tomography systems with a quasi-stationary optical delay line

Paul Jansz, Steven Richardson, Graham Wild, Steven Hinckley

Proceedings Volume 8204, 82043G (2011) https://doi.org/10.1117/12.903280

KEYWORDS: Optical coherence tomography, Reflectivity, Light sources, Genetic algorithms, Mirrors, Liquid crystals, Interfaces, Statistical modeling, Sensors, Systems modeling

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Proceedings Article | 30 December 2008 Paper

Optical switching of a proposed stationary optical delay line for OCT

Paul Jansz, Graham Wild, Steven Hinckley

Proceedings Volume 7268, 72681J (2008) https://doi.org/10.1117/12.814425

KEYWORDS: LCDs, Switching, Liquid crystals, Spatial light modulators, Optical coherence tomography, Opacity, Photodiodes, Light valves, Optical switching, Near infrared

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Proceedings Article | 30 December 2008 Paper

A comparison of wet and dry etching to fabricate a micro-photonic structure for use in OCT

Paul Jansz, Graham Wild, Steven Hinckley

Proceedings Volume 7270, 727016 (2008) https://doi.org/10.1117/12.810973

KEYWORDS: Optical coherence tomography, Reactive ion etching, Semiconducting wafers, Etching, Silicon, Wet etching, Wafer-level optics, Ions, Plasma, Dry etching

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Proceedings Article | 16 May 2008 Paper

A proposed fibre optic time domain optical coherence tomography system using a micro-photonic stationary optical delay line

Paul Vernon Jansz, Graham Wild, Steven Hinckley

Proceedings Volume 7004, 70045Y (2008) https://doi.org/10.1117/12.786904

KEYWORDS: Optical coherence tomography, Optical fibers, Interferometers, Spatial light modulators, Mirrors, Collimators, Mirror structures, Fiber optics, LCDs, Aluminum

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Proceedings Article | 10 January 2008 Paper

Stepped mirrored structures for generating true time delays in stationary optical delay line proof-of-principle experiments for application to optical coherence tomography

Paul Vernon Jansz, Graham Wild, Steven Hinckley

Proceedings Volume 6801, 68011H (2008) https://doi.org/10.1117/12.759012

KEYWORDS: Optical coherence tomography, Spatial light modulators, Mirrors, Interferometers, Optical alignment, Aluminum, Collimators, Mirror structures, Beam splitters, Constructive interference

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Conventional time domain Optical Coherence Tomography (OCT) relies on the detection of an interference pattern generated by the interference of backscattered light from the sample and a reference Optical Delay Line (ODL). By referencing the sample interference with the scan depth of the ODL, constructive interference indicates depth in the sample of a reflecting structure. Conventional ODLs used in time domain OCT require some physical movement of a mirror to scan a given depth range. This movement results in instrument degradation. Also in some situations it is necessary to have no moving parts. Stationary ODLs (SODLs) include dual Reflective Spatial Light Modulator (SLM) systems (Type I) and single Transmissive SLM with match-arrayed-waveguide systems (Type II). In this paper, the method of fabrication and characterisation of a number of Stepped Mirrored Structures (SMS) is presented. These structures are intended for later use in proof-of-principle experiments that demonstrate Type II SODL: a six step, 2 mm step depth macro-SMS, an eight step 150 um deep micro-SMS with glue between steps, and a six step 150 um deep micro-SMS with no glue between steps. These SMS are characterized in terms of their fabrication, step alignment and step height increment precision. The degree of alignment of each step was verified using half of a bulk Michelson interferometer. Step height was gauged using a pair of vernier callipers measuring each individual step. A change in notch frequency using an in-fibre Mach-Zhender interferometer was used to gauge the average step height and the result compared to the vernier calliper results. The best aligned SMS was the micro-SMS prepared by method B with no glue between steps. It demonstrated a 95% confidence interval variation of 1% in reflected intensity, with the least variation in intensity within steps. This SMS also had the least absolute variation in step height increment: less than 8 um. Though less variation would be ideal, for producing micro-SMS for proof of principle experiments for Type II stationary ODL, of the method compared, method B, with no glue between steps, produced more reproducible step height increments and step alignment.

Proceedings Article | 8 January 2008 Paper

A transmit reflect detection system for fiber Bragg grating photonic sensors

Graham Wild, Steven Hinckley, Paul Jansz

Proceedings Volume 6801, 68010N (2008) https://doi.org/10.1117/12.759014

KEYWORDS: Fiber Bragg gratings, Sensors, Signal detection, Edge detection, Optical filters, Photodetectors, Data acquisition, Temperature metrology, Tunable lasers, Electronic filtering

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Proceedings Article | 11 January 2007 Paper

The effect of inter-pixel nested ridges incorporated in a stacked gradient homojunction photodiode architecture

Paul Jansz, Steven Hinckley

Proceedings Volume 6414, 64141T (2007) https://doi.org/10.1117/12.695705

KEYWORDS: Quantum efficiency, Photodiodes, Mirrors, Electrodes, Palladium, Diffusion, Radon, Imaging arrays, Back illuminated sensors, Image processing

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Showing 5 of 10 publications

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