A Review on Guided Optical Feedback in Super-Luminescence Diodes for Metrological Purposes

Cattini, Stefano; Rovati, Luigi

doi:10.1109/jlt.2020.3035565

Cited by 6 publications

(3 citation statements)

References 32 publications

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“…In addition, devices cannot ever be set up for accurate horizontal or vertical measurements. Attempts have been made to implement alternative options for the construction of optoelectronic interference gauges of thicknesses and lengths with high metrological characteristics [10][11][12], which have not been brought to mass production.…”

Section: Improvement Of Methods and Tools For Measuring Linear Dimens...mentioning

confidence: 99%

Quality Monitoring During the Installation of Large Tempered Glass Structures

Yatsuk,

Kurylyak

2023

MEM

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The need to ensure the quality of installation of large-sized structures made of tempered glass following Euro- pean standards is emphasized, the relevance of which is emphasized with the acquisition of the status of a candidate for the EU by our country. This provides access to the construction industry to European manufacturers and exports the products of Ukrainian enterprises abroad. Unification of requirements for both fitting tools and quality control tools during the deployment and operation of large-sized tempered glass products has been ensured. The need to automate measuring operations from the moment of manu- facturing tempered glass to the moment of its putting in place at the construction site is substantiated. It is shown that for the auto- mation of measuring operations during the insertion of large-sized panes of tempered glass, it is appropriate to use optical meas- urement methods.

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Section: Improvement Of Methods and Tools For Measuring Linear Dimens...mentioning

confidence: 99%

Quality Monitoring During the Installation of Large Tempered Glass Structures

Yatsuk,

Kurylyak

2023

MEM

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“…For example, OCT has been extensively used in medical diagnostics, particularly in ophthalmology, cardiology, and dermatology [161][162][163] . OCT is a non-invasive medical imaging technique that delivers high-resolution crosssectional images, facilitating the visualization and analysis of biological tissues, and enabling the precise measurement of tissue thickness and the determination of key properties of biological samples 164 . This technology can be carried out in either a frequency-domain OCT (FD-OCT) or timedomain OCT (TD-OCT) configuration.…”

Section: Interferometrymentioning

confidence: 99%

Low-coherence semiconductor light sources: devices and applications

Lu,

Alkhazragi,

Wang

et al. 2024

npj Nanophoton.

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Since the invention of the laser, there have been countless applications that were made possible or improved through exploiting its multitude of unique advantages. Most of these advantages are mainly due to the high degree of coherence of the laser light, which makes it directional and spectrally pure. Nevertheless, many fields require a moderate degree of temporal or spatial coherence, making conventional lasers unsuitable for these applications. This has brought about a great interest in partially coherent light sources, especially those based on semiconductor devices, given their efficiency, compactness, and high-speed operation. Here, we review the development of low-coherence semiconductor light sources, including superluminescent diodes, highly multimode lasers, and random lasers, and the wide range of applications in which they have been deployed. We highlight how each of these applications benefsits from a lower degree of coherence in space and/or time. We then discuss future potential applications that can be enabled using new types of low-coherence light.

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“…A first important example concerns the optical feedback in the cavity of coherent or low-coherent sources, i.e., a self-mixing laser diode or a self-mixing superluminescent diode. 3,4 This optical approach is mainly used to perform interferometric measurements. In the classic self-mixing configuration, the monitor photodiode, housed inside the optical source case is used to detect the beating between the interfering electric fields.…”

Section: Introductionmentioning

confidence: 99%

A transimpedance preamplifier using a feedforward approach for robust rejection of DC photogenerated currents

Masetti

Cattini

Rovati

2023

Review of Scientific Instruments

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The preamplifier proposed in this paper is designed to extract weak variable photogenerated signals from a high-level continuous background ensuring low noise and high transimpedance gain. An efficient cancellation of the DC component directly at the photodetector output, exploiting a feedforward approach, allows us to properly amplify the variable signal components of interest avoiding saturation of the preamplifier. Furthermore, the large transimpedance gain allows for minimizing the effects of the noise introduced by the following stages on the signal processing chain. In the paper, we present the proposed approach and a possible circuit realization with a signal AC/DC ratio as small as 1/1000 ensuring low noise, high gain, and a considerable bandwidth. The realized preamplifier offers a Noise Equivalent Power NEP ≃ 1.12 nW, an in-band transimpedance gain of 4.4 MΩ, and a wide bandwidth from about 1 Hz up to 100 kHz, making it suitable for use in several applications both in biomedical and industrial fields.

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A Review on Guided Optical Feedback in Super-Luminescence Diodes for Metrological Purposes

Cited by 6 publications

References 32 publications

Quality Monitoring During the Installation of Large Tempered Glass Structures

Quality Monitoring During the Installation of Large Tempered Glass Structures

Low-coherence semiconductor light sources: devices and applications

A transimpedance preamplifier using a feedforward approach for robust rejection of DC photogenerated currents

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