Special optical fiber technology and its development trend

I. Introduction

"Eleventh Five-Year" period, in support of national authorities and focus on all levels of government, especially the Ministry of Science in the "Eleventh Five-Year" national scientific and technological research and "863" light electronic and new materials research program, arranged for the optical fiber preform Stick support projects, the domestic optical fiber enterprises to actively meet the challenges, enthusiastically invested, the relevant industry associations to vigorously promote and accelerate the pace of development of new technologies, new processes and new materials for optical fiber preform with independent intellectual property rights.

Under the guidance of national independent innovation policy, the independent innovation research of national optical fiber has been significantly enhanced. The breakthrough of our country's preform technology has been made. The research and industrialization of optical fiber preform manufacturing technology and equipment have achieved leapfrog development. Manufacturing Processes from MCVD and PCVD, the development of OVD and VAD technology, light rod manufacturing capacity developed from 2 to 4, the domestic optical fiber manufacturers single-mode fiber annual production capacity exceeded 10 million core km of the company rapidly increased to 4, China Has been developed as the real name of the largest optical fiber manufacturing.

Although, China's conventional single-mode capacity to achieve a historic leap forward and progress. However, in the current economic globalization, the competition of conventional single-mode optical fibers is becoming increasingly intense. Coupled with the developed countries to transfer manufacturing to China, this realistic environment is accelerating the competition in the national optical fiber industry, the rapid decline in prices, production capacity will once again appear oversupply.

Therefore, the national optical fiber industry should further enhance independent innovation on the one hand, pay close attention to the core of upstream optical fiber - optical fiber preform scale technology, grab the main source of profit; the other hand, national optical fiber entrepreneurs need to stand in a strategic position in the global market , Hard work, and strengthen management, the national fiber optic industry out of the country, to the global market; Third, the face of the meager profits of the conventional optical fiber market in practice, to creatively expand the competitive differentiation, independent innovation and research and development of new special optical fiber Products, expand new profit growth point.

Second, photonic crystal fiber

FiberHome Technologies Co., Ltd. in the Eleventh Five-Year National Key Basic Research and Development Program 973 project "microstructure optical fiber structure design and preparation of innovative and basic research" (2003CB314905), high-tech industrialization project "863" project "Photonic Crystal Fiber And device research and development "(2007AA03Z447), 973 project" innovative design of microstructured optical fiber, accurate preparation and standardization "(2010CB327606), from the microstructure optical fiber design, preparation technology and application technology and many other aspects The system in-depth research, has made significant achievements in scientific research.

FiberHome has initially formed the technology and equipment control technology of microstructured optical fiber (photonic crystal fiber) and the patented technology of independent intellectual property rights, and successively produced photonic crystal fiber as shown in Fig. 1 to Fig. 6, including: Linear photonic crystal fiber, dispersion flattened photonic crystal fiber, FTTH microstructured fiber, large mode single mode photonic crystal fiber, hollow PBG photonic crystal fiber, all solid PBG photonic crystal fiber, and double-clad ytterbium-doped photonic crystal fiber , Erbium-doped photonic crystal fiber and so on.

FiberHome Communications The photonic crystal fiber provided to the domestic Tsinghua University, Beijing University of Posts and Telecommunications, Tianjin University, Nankai University, Yanshan University, Shenzhen University, National University of Defense Technology for basic research: Tsinghua University using the company provided by the high nonlinear photonic crystal Optical fiber to achieve a slow light to achieve a 0.5 pulse equivalent of optical deceleration; Tianjin University using the company to provide high-nonlinear photonic crystal fiber to achieve 400nm ~ 1400nm double-band supercontinuum; Beijing University of Posts and Telecommunications using the high Nonlinear photonic crystal fiber to achieve the development of wavelength conversion device; Nankai University, the use of the unit's grapefruit-type photosensitive microstructured optical fiber to achieve a new multi-parameter sensing of the new optical fiber grating, such as writing, they have made new high-performance optoelectronic devices International Frontier research results.