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Optics, Volume 5, Issue 2

June 2024 - 8 articles

Cover Story: To solve the short working distance and small measurement range of an all-fibre interferometer, we proposed a Mach–Zehnder Fabry–Perot hybrid fibre-optic interferometry system based on sinusoidal phase modulation. In this paper, a low-finesse fibre interferometer with a larger linear operating range for displacement measurement is realised using a self-collimating probe and incorporating a Kalman filter-based phase demodulation algorithm. Through experimental comparisons, it is demonstrated that the interferometer proposed in this paper can effectively reduce the phase delay, compensate for the depth of modulation drift, and correct the error due to parasitic interference introduced by the optical path structure through the algorithm. A linear large measurement working range of 20 cm is realised. View this paper
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Articles (8)

  • Article
  • Open Access
1 Citations
2,189 Views
9 Pages

20 June 2024

Self-healing optical beams are a class of propagation modes that can recover their beam shapes after distortion or partial blockage. This self-healing property makes them attractive for use in applications involving turbid media as they can—in...

  • Article
  • Open Access
8 Citations
2,261 Views
17 Pages

18 June 2024

Governments and energy providers all over the world are moving towards the use of renewable energy sources. Solar photovoltaic (PV) energy is one of the providers’ favourite options because it is comparatively cheaper, clean, available, abundan...

  • Article
  • Open Access
1 Citations
3,202 Views
16 Pages

16 May 2024

To solve the short working distance and small measurement range of an all-fibre interferometer, we proposed a Mach–Zehnder Fabry–Perot hybrid fibre-optic interferometry system based on sinusoidal phase modulation. In this paper, a low-fin...

  • Article
  • Open Access
2,731 Views
10 Pages

10 May 2024

Laser in situ keratomileusis (LASIK) is the most frequently used technique for the surgical correction of refractive errors on the cornea. It entails the creation of a superficial hinged corneal flap using a femtosecond laser, ablation of the underly...

  • Feature Paper
  • Review
  • Open Access
12 Citations
8,178 Views
19 Pages

Skin Imaging Using Optical Coherence Tomography and Photoacoustic Imaging: A Mini-Review

  • Mohsin Zafar,
  • Amanda P. Siegel,
  • Kamran Avanaki and
  • Rayyan Manwar

30 April 2024

This article provides an overview of the progress made in skin imaging using two emerging imaging modalities, optical coherence tomography (OCT) and photoacoustic imaging (PAI). Over recent years, these technologies have significantly advanced our un...

  • Communication
  • Open Access
2 Citations
1,725 Views
10 Pages

15 April 2024

We present an optical metasurface with symmetrical individual elements sustaining Fano resonances with high Q-factors. This study combines plane-wave illumination and modal analysis to investigate the resonant behavior that results in a suppression o...

  • Article
  • Open Access
3 Citations
2,233 Views
15 Pages

Enhancing Microwave Photonic Interrogation Accuracy for Fiber-Optic Temperature Sensors via Artificial Neural Network Integration

  • Roman Makarov,
  • Mohammed R. T. M. Qaid,
  • Alaa N. Al Hussein,
  • Bulat Valeev,
  • Timur Agliullin,
  • Vladimir Anfinogentov and
  • Airat Sakhabutdinov

10 April 2024

In this paper, an application of an artificial neural network algorithm is proposed to enhance the accuracy of temperature measurement using a fiber-optic sensor based on a Fabry–Perot interferometer (FPI). It is assumed that the interrogation...

  • Article
  • Open Access
4 Citations
3,033 Views
16 Pages

Wavelet-Based Machine Learning Algorithms for Photoacoustic Gas Sensing

  • Artem Kozmin,
  • Evgenii Erushin,
  • Ilya Miroshnichenko,
  • Nadezhda Kostyukova,
  • Andrey Boyko and
  • Alexey Redyuk

3 April 2024

The significance of intelligent sensor systems has grown across diverse sectors, including healthcare, environmental surveillance, industrial automation, and security. Photoacoustic gas sensors are a promising type of optical gas sensor due to their...

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Optics - ISSN 2673-3269