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Production process of broad band low peak dispersion unshifted single-mode optical fiber

A single-mode optical fiber and production process technology, applied in the field of broadband low-water peak non-dispersion-shifted single-mode optical fiber production process, can solve problems such as attenuation effects, and achieve the effects of wide wavelength interval, investment protection, and system cost reduction

Active Publication Date: 2006-05-31
ZHONGTIAN TECH FIBER OPTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially since it causes an increase in the SiOH peak at 1383 nm, the process creates new OH groups in the material and has a negative effect on the attenuation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Broadband low water peak non-dispersion shifted single-mode optical fiber semi-finished drawing

[0059] Sinter the broadband low water peak non-dispersion shifted single-mode optical fiber preform, sintering uses hydrogen and oxygen flame, the temperature is controlled at 1600 °C; polish the sintered broadband low water peak non-dispersion shifted single-mode optical fiber preform, the purpose is Remove the impurities on the surface of the rod itself; install the sintered and polished broadband low water peak non-dispersive shift single-mode optical fiber preform in a high-speed drawing tower for drawing. The temperature of the furnace body is controlled at 2100 ° C, and the drawing speed is 1000 m / min, and the end uses a double take-up machine to wind up the optical fiber. During the first time, the optical fiber coating is coated twice, and the optical fiber coating can be acrylic resin coating.

[0060] (2) Broadband low water peak non-dispersion shifted single...

Embodiment 2

[0084] (1) Broadband low water peak non-dispersion shifted single-mode optical fiber semi-finished drawing

[0085] Sinter the broadband low water peak non-dispersion shifted single-mode optical fiber preform, sintering uses hydrogen oxygen flame, the temperature is controlled at 1725 °C; polish the sintered broadband low water peak non-dispersion shifted single-mode optical fiber preform, the purpose is Remove the impurities on the surface of the rod itself; install the sintered and polished broadband low water peak non-dispersive shift single-mode optical fiber preform in a high-speed drawing tower for drawing. m / min, and the end uses a double take-up machine to wind up the optical fiber. During the first time, the optical fiber coating is coated twice, and the optical fiber coating can be acrylic resin coating.

[0086] (2) Broadband low water peak non-dispersion shifted single-mode optical fiber semi-finished rewinding screening

[0087] The above-drawn broadband low wat...

Embodiment 3

[0110] (1) Broadband low water peak non-dispersion shifted single-mode optical fiber semi-finished drawing

[0111] Sinter the broadband low water peak non-dispersion shifted single-mode optical fiber preform, sintering uses hydrogen-oxygen flame, the temperature is controlled at 1900 ° C; polish the sintered broadband low water peak non-dispersion shifted single-mode optical fiber preform, the purpose is Remove the impurities on the surface of the rod itself; install the sintered and polished broadband low water peak non-dispersion shifted single-mode optical fiber preform in a high-speed drawing tower for drawing. m / min, and the end uses a double take-up machine to wind up the optical fiber. During the first time, the optical fiber coating is coated twice, and the optical fiber coating can be acrylic resin coating.

[0112] (2) Broadband low water peak non-dispersion shifted single-mode optical fiber semi-finished rewinding screening

[0113] The above-drawn broadband low ...

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PUM

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Abstract

The invention relates to a production process of a broadband low water peak non-dispersion shifted single-mode optical fiber (G.652C / D optical fiber for short) applied in an optical communication network. The process method is (1) wide-band low water peak non-dispersion shifted single-mode fiber semi-finished drawing; (2) broadband low water peak non-dispersion shifted single-mode fiber semi-finished product rewinding screening; (3) broadband low water peak non-dispersion shifted single-mode optical fiber The deuterium gas reaction of the semi-finished product of the molded optical fiber; the concentration of deuterium gas in the deuterium-nitrogen mixed gas used is 1-3%; the mixed gas pressure is 0.5-1Kg, the reaction time is 24-36 hours, and the temperature of the gas is normal temperature 20-25 ° C; ( 4) Hydrogen loss test of broadband low water peak non-dispersion shifted single-mode optical fiber semi-finished products; the concentration of hydrogen in the hydrogen-nitrogen mixed gas accounts for 1-2%; the mixed gas pressure is normal pressure to 3Kg, the reaction time is 114-136 hours (5) Degassing treatment of broadband low water peak non-dispersion shifted single-mode fiber; (6) Broadband low water peak non-dispersion shifted single-mode fiber semi-finished test; (7) Broadband low water peak non-dispersion shifted The finished single-mode optical fiber is packaged and put into storage.

Description

technical field [0001] The production process of the broadband low water peak non-dispersion shifted single-mode fiber of the present invention relates to a non-dispersion shifted single-mode low water peak fiber (G.652C fiber for short) and a non-dispersion shifted single-mode low water peak fiber used in optical communication networks The manufacturing process of low polarization mode dispersion optical fiber (referred to as G.652D optical fiber). Background technique [0002] Optical communication is usually conducted by infrared light with a wavelength range of 0.8-0.9um or 1.3-1.6um. These wavelengths are adequately generated by LEDs, laser diodes, and suffer minimal attenuation in fiber optics. [0003] One problem associated with working fibers in the transmission window is the fact that absorption bands occur in this wavelength range. These absorption bands are caused especially by the presence of OH groups. [0004] It is recommended to use high purity silica wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B37/012C03B37/014
Inventor 薛济萍朱兆章王美才翁广明刘志忠庄卫星钱生梅蓝燕锐薛群山
Owner ZHONGTIAN TECH FIBER OPTICS
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