Long Path Industrial OCT

Shiina, Tatsuo

doi:10.5220/0005842903430348

Cited by 2 publications

(3 citation statements)

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“…A depth profile for that lateral position is generated and it is known as the Ascan. The resulting processed signal is the one transmitted to the oscilloscope (28). The digitized signals are saved in a flash drive through the USB port of the DSO.…”

Section: The Portable Td-oct Systemmentioning

confidence: 99%

“…It was first developed in 1991 by David Huang (17) and OCT is notably used in biomedical applications including ophthalmology and dermatology (18)(19)(20)(21)(22)(23)(24)(25)(26). It also extends to industrial, pharmaceutical, and poultry applications (27)(28)(29)(30)(31). In the field of agriculture, OCT has been used in the diagnosis of various infections or diseases in onions, melon seeds, kaki plant leaves, apple leaves, and orchids were analyzed to control and limit the spread of diseases (32)(33)(34)(35)(36)(37)(38)(39)(40).…”

Section: Introductionmentioning

confidence: 99%

“…The FD-OCT has highspeed and high-resolution, however, the measurement range and resolution are fixed for a certain target. For a more flexible OCT system that can be applied to various targets, a portable TD-OCT system was developed that utilizes the rotational optical path length mechanism where the rotation radius and speed decide the measurement range and scan rate, respectively (28). A similar portable TD-OCT system was constructed in our laboratory using the same principle described by Shiina (28,31,40,42).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Leaf Structure and Attenuation Coefficients of Citrofortunella Microcarpa Leaves Using a Portable TD-OCT System

Galvez¹,

Lara²,

Mandia³

et al. 2022

ECS Trans.

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A non-invasive and simple point measurement using a portable TD-OCT system was used to measure the leaf structure and attenuation coefficient of healthy and unhealthy leaves of a Citrofortunella Microcarpa plant. Assuming homogeneity within the layers, the attenuation coefficient was obtained by linear fitting the logarithm of the A-scan or depth profile of the leaf. The attenuation coefficients of the epidermal and palisade layers of the healthy leaves were 27.07/mm and 15.36/mm, respectively, and for the unhealthy leaves they were 21.82/mm and 8.01/mm, respectively. Comparing the A-scan profiles obtained for the healthy and unhealthy leaves, a mixing of the epidermal and palisade layers within the unhealthy leaves was observed. These observations and the decrease in the attenuation coefficients of the unhealthy leaves are indications of deterioration in the photosynthetic rate that enhances the growth and development of the plants which can provide early detection of sickness benefitting Filipino farmers.

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Section: The Portable Td-oct Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Leaf Structure and Attenuation Coefficients of Citrofortunella Microcarpa Leaves Using a Portable TD-OCT System

Galvez¹,

Lara²,

Mandia³

et al. 2022

ECS Trans.

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Large Axial Range Frequency-Domain Optical Low Coherence Interferometry

Cerrotta

Morel

Alvira

et al. 2019

IEEE Photon. Technol. Lett.

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In this letter, we propose a new experimental setup to extend the measurement range of frequencydomain low coherence interferometry (FD-LCI) from 3 mm to 2 cm. The FD-LCI can be extended to the technique of frequency domain optical coherence tomography by performing additional lateral scanning. This new and simple arrangement just attaches an extra interferometer before the spectrometer in a typical FD-LCI setup. With this configuration, it is possible to overcome the limitation of the dynamic range of the conventional technique. This allows us to measure the optical path difference of the sample of interest, which is outside the detection range of the spectrometer, using an extra interferometer as a tuner system. In addition, this tuning allows significant minimization of the effects produced by the fall-off. The accuracy of the new system is obtained by adding the FD-LCI and the tuning micrometric translator accuracies. In our experimental setup, this value is 20 μm.

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Long Path Industrial OCT

Cited by 2 publications

References 0 publications

Leaf Structure and Attenuation Coefficients of Citrofortunella Microcarpa Leaves Using a Portable TD-OCT System

Leaf Structure and Attenuation Coefficients of Citrofortunella Microcarpa Leaves Using a Portable TD-OCT System

Large Axial Range Frequency-Domain Optical Low Coherence Interferometry

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