Optical fiber and manufacturing method thereof

An optical fiber and fiber core technology, which is applied in the field of optical fiber and its production, and the production of large effective area and low loss optical fiber preforms, can solve problems such as difficulty in large-scale production, complex waveguide design, and small optical rod size, and achieve good optical fiber. Bending performance, improvement of negative effects, effect of fiber attenuation reduction

Inactive Publication Date: 2014-12-17
HENGTONG OPTICAL MATERIAL CO LTD
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Problems solved by technology

[0003] The patent document publication number is CN103257393A "A Large Effective Area Optical Fiber", which provides a 5-layer waveguide structure design, including two core layers and three layers of cladding. The waveguide design is too complicated and difficult to control. , the size of the light rod is small, it is difficult to apply to large-scale production

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  • Optical fiber and manufacturing method thereof
  • Optical fiber and manufacturing method thereof
  • Optical fiber and manufacturing method thereof

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] Please also refer to figure 1 , figure 2 and image 3 , the optical fiber of the present invention includes a core layer 1 and a cladding layer, and the core layer is covered with the cladding layer. The cladding layer includes an inner cladding layer 2 , a depressed cladding layer 3 and an outer cladding layer 4 sequentially from the inside to the outside.

[0031] The core layer 1 is not doped with Ge, but in order to avoid the increase of fiber attenuation caused by the viscosity mismatch between the core layer 1 and the inner cladding layer 2, the core layer 1 will be doped with a sm...

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Abstract

The invention discloses an optical fiber and a manufacturing method thereof. The optical fiber comprises a fiber core layer and a wrapping layer; the fiber core layer is covered with the wrapping layer. The wrapping layer comprises an inner wrapping layer, a sunk wrapping layer and an outer wrapping layer in order from inside to outside. The optical fiber satisfies the following relations: delta 1 which is equal to n1-n0 is greater than -0.05% and less than -0.05%, delta 2 which is equal to n2-n0 is greater than -0.4% and less than -0.2%, delta 3 which is equal to n3-n0 is greater than -0.6% and less than -0.3%, and delta 4 which is equal to n4-n0 is greater than -0.3% and less than -0.1%, wherein n0 is the refractive index of pure quartz, n1 is the refractive index of the fiber core layer, n2 is the refractive index of the inner wrapping layer, n3 is the refractive index of sunk wrapping layer and n4 is the refractive index of the outer wrapping layer.

Description

technical field [0001] The present invention relates to the field of optical fiber transmission, in particular to a production method of a large effective area and low loss optical fiber preform. Through the combination of PCVD+RIC, not only can a large effective area and low loss optical fiber be produced, but also the RIC method is suitable for large-scale production , More specifically, the present invention relates to an optical fiber and a manufacturing method thereof. Background technique [0002] With the development of international communication services, especially the rapid development of Internet technology and 3G and passive optical network technologies, the demand for optical fiber bandwidth in communication systems shows a rapid growth trend. In communication systems with long-distance, large-capacity, and high-speed transmission, optical fiber amplifier technology and wavelength division multiplexing technology are usually required, especially in backbone net...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/036C03B37/018C03B37/025C03C13/04
Inventor 劳雪刚肖华沈震强王友兵杜森王亚玲
Owner HENGTONG OPTICAL MATERIAL CO LTD
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