Germanate glass cladding/semiconductor fiber core composite material optical fiber

A technology of germanate glass and composite materials, which is applied in the direction of cladding optical fiber, optical waveguide light guide, glass manufacturing equipment, etc., can solve the problem of composite optical fiber without obtaining performance, and achieve excellent infrared transmission performance, excellent drawing performance, and anti-corrosion Effect of high laser damage threshold

Active Publication Date: 2016-03-30
SOUTH CHINA UNIV OF TECH
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AI Technical Summary

Benefits of technology

This patented technology describes an improved way to make plastic opticals by adding multiple layers made up mostly of specialized crystalline or amorphous elements called quantum dots (QDS). QDL's unique characteristics allow them to transmit signals over longer distances without being affected much like other substances used in previous methods such as fluorescent lamps. By combining these techniques together, this new type of plastic will provide better functionality compared to current technologies due to enhanced heat resistance, reduced loss during operation, higher efficiency in converting electrical energy into visible radiation, increased sensitivity towards specific wavelength ranges, etc., resulting in greater potential applications ranging from electronic devices to communication systems.

Problems solved by technology

This patented technical problem addressed by this patents relates to developing multi function composites that include various types of materials like oxide nanoparms, semi conductive metals, organic compounds, ceramics, magnetic crystal cores, plasma spray coatings, and carbon black structures. Existing methods involve adding layers made up of multiple components together without fully satisfying each requirement individually, leading to mixed results where some require further experimentation before achieving desired outcome.

Method used

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  • Germanate glass cladding/semiconductor fiber core composite material optical fiber
  • Germanate glass cladding/semiconductor fiber core composite material optical fiber
  • Germanate glass cladding/semiconductor fiber core composite material optical fiber

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Experimental program
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Effect test

Embodiment 1

[0022] The preparation and method of the multi-component germanate glass cladding / germanium semiconductor core fiber are as follows:

[0023] (1) The traditional fusion-annealing method is used to melt bulk multi-component germanate clad glass. In terms of mass percentage, the glass raw material formula is: BaO15%, Ga 2 o 3 15%, GeO 2 65%, La 2 o 3 5% (purity 99.99%). Weigh 800 g of raw materials according to the proportion, mix them evenly, add them into a platinum crucible, and dissolve them at 1400°C for 5 hours. During this period, the reaction atmosphere method is used to remove water, and at the same time, it is protected by oxygen. After molding, keep it warm at 600°C for 20 hours, and then cool to room temperature with the furnace. The multicomponent germanate glass transition temperature T g is 678°C (such as figure 1 DSC measurement), the infrared transmission performance is shown in figure 2 middle.

[0024] (2) Machining of cladding glass: After precisio...

Embodiment 2

[0029] The difference between this embodiment and Embodiment 1 lies in that the formulation of the multi-component germanate cladding glass and the semiconductor material are different. The multi-component germanate clad glass is calculated by mass percentage, and the glass raw material formula is: BaO20%, Ga 2 o 3 17%, GeO 2 60%, La 2 o 3 3% (purity 99.99%). Indium antimonide (InSb) semiconductor is used as the core material of the optical fiber. The melting point of InSb is 527°C, and it is the direct bandgap semiconductor with the narrowest bandgap among III-V semiconductors. The forbidden band width of InSb at room temperature is 0.18eV, and its transmission spectrum covers the entire mid-wave infrared band (7-30μm). In terms of energy band characteristics, the conduction band of InSb has strong non-parabolic properties, which makes it have a large nonlinear effect, especially three-wave mixing. In addition, InSb has high carrier mobility, high photon absorption effi...

Embodiment 3

[0031] The difference between this embodiment and Embodiment 1 lies in the core semiconductor material. The GaSb semiconductor is selected as the fiber core. The GaSb semiconductor has a melting point of 712°C and a bandgap width of 0.726eV (1709nm) at room temperature. It can use energy level transitions to emit light and achieve 1.7-1.8μm near-infrared emission. GaSb core fiber. In addition to having luminescent properties, undoped GaSb will exhibit p-type semiconductor characteristics and high hole mobility. GaSb core fibers or thinner micro-nano fibers can be used for metal-oxide-semiconductor field-effect transistors (MOSFETs) and other optoelectronic devices. Bulk GaSb is filled into cylindrical holes in multi-component germanate cladding glass, assembled into optical fiber preforms, and then drawn down at 980°C to make optical fibers.

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Abstract

The invention provides a germanate glass cladding/semiconductor fiber core composite material optical fiber. According to the germanate glass cladding/semiconductor fiber core composite material optical fiber, multi-component germanate glass is adopted as an optical fiber cladding material, and Ge, InSb, GaSb, SnTe or GeTe semiconductors are adopted as an optical fiber core material, so that a 2-to-5 micron-light band low-loss composite material optical fiber can be formed, and the transmittance of the composite material optical fiber is greater than 75%. Medium-infrared band has been widely applied to fields such as atmospheric monitoring, laser radar, laser medical treatment and spectroscopy, and has become a hot research topic in recent years. When light is transmitted in the optical fiber, a transmission light field is mainly distributed in the fiber core of the optical fiber, while, a part of the light field exists in the cladding of the optical fiber, and therefore, low-loss light transmission requires high transmittance of the fiber core and the cladding for transmitted light. According to the germanate glass cladding/semiconductor fiber core composite material optical fiber of the invention, the category of the germanate glass cladding/semiconductor fiber core composite material optical fiber can be greatly enriched, and the performance of the semiconductor material in the medium-infrared band can be given to full play, and a foundation can be provided for the application of the composite material optical fiber to the medium-infrared band.

Description

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Claims

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Application Information

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Owner SOUTH CHINA UNIV OF TECH
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