Optical fiber, optical transmission path, and optical fiber manufacturing method

A manufacturing method and optical transmission technology, applied in clad optical fiber, multi-layer core/clad optical fiber, graded index core/clad optical fiber, etc., can solve problems such as ambiguity, and achieve the goal of reducing mode dispersion Effect
CN103189767AActive Publication Date: 2013-07-03FUJIKURA LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIKURA LTD
Publication Date
2013-07-03

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Abstract

An optical fiber (1) comprises an inner core (111) with a refraction distribution which is an alpha-power distribution; an outer core (112) which surrounds the inner core (111); and a cladding (12) which surrounds the outer core (112). With the ratio of the refraction difference between the outer core (112) and the cladding (12) to the refraction difference between the center of the inner core (111) and the cladding (12) defined as Rd, and Rd set to 0.15 or more, it is possible to implement a two-mode optical fiber in which mode dispersion is minimized.
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Description

technical field

[0001] The present invention relates to dual mode optical fibers. It also relates to an optical transmission line comprising such an optical fiber. In addition, it also relates to a method of manufacturing such an optical fiber. Background technique

[0002] In optical information communication, along with the increase in communication volume, the required transmission capacity of optical fiber as a transmission medium is also increasing. In particular, such a requirement is particularly prominent in optical fibers for long-distance transmission based on the WDM (Wavelength Division Multiplexing) method. It is expected that the increase in communication volume will continue to be explored in the future, and the increase in transmission capacity has become an urgent issue for optical fibers.

[0003] In order to increase the transmission capacity of an optical fiber, it is necessary to increase the power of signal light input to the optical fiber. However,...

Claims

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