Advanced Manufacturing in Fiber Technologies: Metallic Glasses

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Description

This lecture explores the thermal drawing of metallic glasses, highlighting the challenges associated with the process and the collaboration with ETH Zurich. It delves into the viscosity and crystallization time of various metallic glasses, discussing the potential applications in waveguides, metasurfaces, and optoelectronic fibers. The presentation also covers the fabrication of liquid metal-based fibers and devices, showcasing their potential for creating complex electrode architectures. Additionally, it discusses the development of soft electronic fiber sensors for pressure sensing and transmission line-based electronic textiles, emphasizing their sensing capabilities. The lecture concludes with insights into triboelectric multi-material fibers for mechanical energy harvesting and the potential of biodegradable microstructured fibers for various applications.

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https://mediaspace.epfl.ch/media/0_8vgw756c

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Optoelectronics

Optoelectronics (or optronics) is the study and application of electronic devices and systems that find, detect and control light, usually considered a sub-field of photonics. In this context, light often includes invisible forms of radiation such as gamma rays, X-rays, ultraviolet and infrared, in addition to visible light. Optoelectronic devices are electrical-to-optical or optical-to-electrical transducers, or instruments that use such devices in their operation.

Waveguide (optics)

An optical waveguide is a physical structure that guides electromagnetic waves in the optical spectrum. Common types of optical waveguides include optical fiber waveguides, transparent dielectric waveguides made of plastic and glass, liquid light guides, and liquid waveguides. Optical waveguides are used as components in integrated optical circuits or as the transmission medium in local and long-haul optical communication systems.

Optical fiber

An optical fiber, or optical fibre in Commonwealth English, is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair. Optical fibers are used most often as a means to transmit light between the two ends of the fiber and find wide usage in fiber-optic communications, where they permit transmission over longer distances and at higher bandwidths (data transfer rates) than electrical cables.

Waveguide

A waveguide is a structure that guides waves, such as sound (acoustic waveguide), light (optical waveguide), radio waves (radio-frequency waveguide) or other electromagnetic waves, with minimal loss of energy by restricting the transmission of energy to one direction. Without the physical constraint of a waveguide, wave intensities decrease according to the inverse square law as they expand into three-dimensional space. There are different types of waveguides for different types of waves.

Arrayed waveguide grating

Arrayed waveguide gratings (AWG) are commonly used as optical (de)multiplexers in wavelength division multiplexed (WDM) systems. These devices are capable of multiplexing many wavelengths into a single optical fiber, thereby increasing the transmission capacity of optical networks considerably. The devices are based on a fundamental principle of optics, which states that light waves of different wavelengths do not interfere linearly with each other.