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  • What is Optical Attenuation?
    Article - 15 Mar 2019
    For any fiber optic cable to be highly effective at transmitting signals and/or data, the light passing through the fiber optics needs to be coherent, i.e. the light beam needs to be tight so that it...
  • Charles Kao and Fiber Optics in Telecommunications
    Article - 16 Sep 2014
    The development of fiber optic technology has driven the dramatic progression of telecommunications.
  • What is Four-Wave Mixing?
    Article - 26 Jun 2013
    Four-wave mixing (FWM) is a non-linear optical process where two other waves are produced by the interaction of two wavelengths. Four-wave mixing can take place in any kind of material.
  • What is an Optical Amplifier?
    Article - 5 Jun 2013
    Optical amplifiers are devices that amplify an optical signal without converting it into an electric signal. Optical amplifiers are of two kinds: laser amplifiers and feedback amplifiers. Laser...
  • Using Dielectric Thin Films for Optical Coatings
    Article - 17 Jul 2023
    An anti-reflection coating is a dielectric thin film coating with a specific refractive index and thickness. The coating is applied to an optical surface to reduce the reflectivity/reflectance of that...
  • Making Autonomous Vehicles Safer with Reflective Microscale Concave Interfaces
    Article - 4 Nov 2021
    Researchers from the USA and China have explained the mechanism behind the structural color that appears when light is reflected off a thin film of microscale concave interfaces. The team also...
  • How to Set Up Schlieren Optics
    Article - 3 Jan 2019
    This article describes the methods required to set up a variety of schlieren optics.
  • How do Optical Parametric Oscillators Work?
    Article - 6 Feb 2024
    OPOs generate tunable coherent radiation via nonlinear frequency conversion, filling spectral gaps left with lasers.
  • Design and Fabrication of Photonic Crystal Devices
    Article - 5 Dec 2023
    Photonic crystal devices are uniquely engineered structures that can help control light propagation.  These devices are widely applied in various cutting-edge technologies, such as logic gates,...
  • Ultrafast Nonlinear Optics for Laser Pulse Compression
    Article - 30 Oct 2023
    In the past 50 years, the pursuit of shorter laser pulses has been the driving force in advancing ultrafast science, with laser pulse compression techniques now enabling the generation of single-digit...

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