Composite optical fiber with multi-component phosphate glass cladding/selenium and tellurium compound semiconductor fiber core

Abstract

The invention provides a composite optical fiber with a multi-component phosphate glass cladding / selenium and tellurium compound semiconductor fiber core. A composite optical fiber cladded with semiconductor fiber core glass has great application value in the aspects of nonlinear optical and medium / far infrared optical transmission, optical fiber sensing, photoelectric effect and the like. According to the composite optical fiber with the multi-component phosphate glass cladding / selenium and tellurium compound semiconductor fiber core, experimental study shows that the proper fiber core and cladding materials of the optical fiber with the glass cladding / semiconductor fiber core are obtained, in other words, multi-component phosphate glass is taken as the optical fiber cladding, a semiconductor selenium and tellurium compound is taken as the fiber core of the optical fiber, the thermal properties, the wetting properties and the expansion properties of the materials of the optical fiber cladding and the materials of the fiber core are reasonably combined, and thus the low-loss composite optical fiber which can be drawn continuously is obtained; in addition, the excellent photoelectric properties of the phosphate glass and the selenium and tellurium semiconductor are combined, and the composite optical fiber has broad application prospects in the aspects of optical transmission on the medium / far infrared long-wave band, photoelectric detection, Raman shift infrared sources, optical signal processing based on the high nonlinearity of the optical fiber, super-continuous super-continuum spectrum light sources and the like.

Description

technical field [0001] The invention belongs to the field of optical fiber technology, in particular to a multi-component phosphate glass cladding semiconductor selenium tellurium compound fiber core composite material optical fiber. Background technique [0002] Optical fiber has important applications in communication and plays a vital role in modern society. At present, the global annual output of optical fiber reaches 1.5×10 8 ㎞, it is expected to exceed 2.0×10 by 2017 8 ㎞. With the development of society and the advancement of science and technology, higher requirements are put forward for optical fibers, such as: the detection of deep well gas and oil fields working in extreme environments, high-power laser systems with small nonlinearities, and high nonlinear optical fibers to Realize optical signal processing, etc. Traditional silica fiber and rare-earth-doped glass fiber cannot meet these requirements due to their own defects. In recent years, composite fiber ...

AI Technical Summary

Problems solved by technology

However, the drawing temperature of germanium and silica core silica glass clad optical fiber is nearly 2000°C, and the expansion coefficients of silica glass, silicon crystal and germanium crystal are 0.55ppm / K, 4.2ppm / K and 5.5ppm / K respectively. The expansion coefficients differ by about an order of magnitude, which does not fully satisfy the above conditions

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