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Nonlinear dispersion displacement optical fibre, optical signal treater and wavelength converter

A dispersion-shifted fiber, nonlinear technology, applied in nonlinear optics, cladding fiber, optical waveguide light guide, etc., can solve the problems of difficulty in adjusting zero-dispersion wavelength and laborious fiber.

Inactive Publication Date: 2006-07-12
FURUKAWA ELECTRIC CO LTD
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Problems solved by technology

However, when it comes to such nonlinear optical fibers, in which adjusting the zero-dispersion wavelength is difficult, it is very laborious to manufacture a plurality of different kinds of optical fibers that are different from each other, and these fibers need to have zero-dispersion wavelengths corresponding to the wavelengths of the input light, For example, optical signal processing for wavelength multiplexed transmission of light

Method used

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  • Nonlinear dispersion displacement optical fibre, optical signal treater and wavelength converter
  • Nonlinear dispersion displacement optical fibre, optical signal treater and wavelength converter
  • Nonlinear dispersion displacement optical fibre, optical signal treater and wavelength converter

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Embodiment Construction

[0021] According to the nonlinear dispersion-shifted optical fiber of the first aspect of the present invention, the dispersion at a wavelength of 1550 nm is equal to the set value required for optical signal processing utilizing a nonlinear phenomenon, and the dispersion slope at a wavelength of 1550 nm falls within 0.001 to 0.1 ps / nm 2 In the range of / km, the wavelength of 1550nm along the fiber longitudinal dispersion fluctuation limit falls in the range of 0.01 to 3ps / nm / km, and the wavelength of 1550nm nonlinear constant n 2 / A eff Not less than 15×10 -10 / W.

[0022] The dispersion fluctuation limit referred to in this specification means the dispersion fluctuation limit measured with a measuring device that measures the dispersion distribution over the entire length of the actual length of the optical fiber. For example, using the dispersion distribution measurement device in the system studied by Mollenauer, the dispersion distribution along the longitudinal direc...

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Abstract

Disclosed is a nonlinear dispersion-shifted optical fiber, wherein a charomatic dispersion at a wavelength of 1550 nm is equal to a set value required for optical signal processing utilizing a nonlinear phenomenon, a dispersion slope at a wavelength of 1550 nm falls within a range of 0.001 to 0.1 ps / nm2 / km, a margin of fluctuation of the charomatic dispersion in a longitudinal direction of the optical fiber at a wavelength of 1550 nm falls within a range of 0.01 to 3 ps / nm / km, and a nonlinear constant n2 / Aeff at a wavelength of 1550 nm is not smaller than 15x10-10 / W.

Description

technical field [0001] The present invention relates to a nonlinear dispersion-shifted optical fiber that produces a nonlinear optical phenomenon with respect to input light, and an optical signal processing device and a wavelength converter respectively utilizing the specific optical fiber. Background technique [0002] Nonlinear optical phenomena that can occur within optical fibers include, for example, four-wave mixing, self-phase modulation, cross-phase modulation, and stimulated Brillouin scattering. If these phenomena occur in the optical fiber, wavelength conversion, phase modulation, scattering, etc. occur, thereby increasing noise components or inhibiting sufficient transmission of input light. Under such circumstances, attempts have been made to exclude as many of these nonlinear optical phenomena as possible in conventional delivery fibers. [0003] In recent years, conventional concepts have been changed to perform wavelength conversion and optical signal proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02G02B6/036G02F1/383H04B10/12G02B6/10
CPCC03C13/04G02B6/02028G02B6/02242G02B6/0281G02B6/03627G02B6/105
Inventor 广石治郎熊野尚美杉崎隆一
Owner FURUKAWA ELECTRIC CO LTD
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