Preparation method of high-resolution chalcogenide optical fiber imaging beam

Abstract

The invention discloses a preparation method of a novel chalcogenide fiber image transmitting bundle with high resolution. The method is simple in technology, strong in maneuverability, efficient, feasible, capable of overcoming the defects that the chalcogenide fiber is brittle and poor in mechanical property, and further capable of avoiding the problems that the conventional preparation process of the image transmitting bundle is easy to break and darken filament, irregular in row arrangement, and eliminating the adverse effects generated by operations of coating and binding to the resolution of the fiber optical bundle. With the method disclosed by the invention, the infrared chalcogenide fiber image transmitting bundle with high pixels and high resolution of multiple required end face structures can be prepared; the manufacturing cycle is short, and the success rate is high; the resolution ratio of the chalcogenide fiber image transmitting bundle prepared by the method can be up to 130-200 lp / mm, the maximal pixel element quantity can be up to 300,000, the duty ratio of the fiber core is more than 60%, and the diameter of the chalcogenide fiber image transmitting bundle is controllable within the range of 250-2000 microns.

Description

technical field [0001] The invention belongs to the technical field of optical fiber preparation, and relates to a preparation method of an optical fiber image transmission bundle, in particular to a preparation method of a high-resolution chalcogenide optical fiber image transmission bundle. Background technique [0002] As a kind of convenient passive image transmission optical device, optical fiber image transmission beam has been paid more and more attention and application since entering the 20th century, especially the urgent demand for infrared optical fiber image transmission bundle in modern society has prompted more and more A large number of scientific researchers have devoted their energy to it, which has greatly expanded the application range and field of image transmission technology in the field of infrared optics. [0003] At present, the optical fiber image transmission bundles prepared in China are mainly quartz glass optical fiber image transmission bundle...

AI Technical Summary

Problems solved by technology

[0004] In the visible light frequency band, quartz glass optical fibers and image beams are currently widely used in optical fiber communication and non-communication systems, but limited by the infrared cut-off wavelength of quartz materials, the longest working wavelength of quartz glass optical fibers and image beams is around 2 μm, while Silica glass optical fiber and image transmission in the extremely important second transmission window of the atmosphere (3-5μm, this wavelength range includes many important molecular characteristic lines) and the third transmission window of the atmosphere (8-12μm) in the relatively transparent atmosphere beams cannot effectively transmit light in these infrared bands

Chalcogenide glass has excellent mid- and far-infrared transmission properties and high refractive index and third-order nonlinearity. Optical fibers made of chalcogenide glass can be used in mid- and far-infrared biological and chemical sensing, mid- and far-infrared laser energy Transmission, mid-infrared fiber lasers and nonlinear optics, etc., but the number of pixels and resolution of infrared fiber image beams made of chalcogenide glass fibers are not ideal

At present, there are few studies on infrared optical fiber image transmission beams. Only the chalcogenide optical fiber As reported by the Beijing Glass Research Institute in 1999 and 2001 respectively 2 S 3 and As 2 Se 3 , the maximum number of pixels is 10,000 pixels, the resolution is low, and the long-distance transmission of infrared images cannot be realized; As reported by the American AMI company in 2010 2 S 3 The optical fiber image transmission bundle has a core refractive index n=2.8, the effective image transmission area reaches 70%, and the number of pixels is close to 3000 (for example: 10-M-2 series naval fiber optic image transmission bundle, the number of pixels is 42×69=2898 , and its effective image transmission area reaches 61.5%), thus obtaining a 10m long As 2 S 3 Optical fiber image transmission bundle, but its number of pixels is still relatively low, and it still cannot get rid of the process of gluing and bonding in the manufacturing process, which reduces the resolution of the image transmission bundle to a certain extent

[0005] At present, both at home and abroad, there are many problems and bottlenecks in the research and production of chalcogenide optical fiber image transmission bundles, such as the brittleness of chalcogenide optical fiber, complex production process, insufficient flexibility, broken wires, and dark wire rate. Advanced problems restrict the development of chalcogenide optical fiber image transmission bundle and infrared image transmission technology

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