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Optical pulse series spectral stretcher based on high nonlinear optic fibre

A highly nonlinear optical fiber and optical pulse sequence technology, applied in optical fiber transmission, electrical components, electromagnetic wave transmission systems, etc., can solve the problem of low efficiency of pulse spectrum broadening

Inactive Publication Date: 2005-07-27
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a 40GHz optical pulse sequence spectrum stretcher based on highly nonlinear optical fiber to overcome the pulse spectrum stretching of the pulse spectrum stretcher composed of HNLF in the common scheme for the high pulse repetition frequency of 40GHz The problem of low efficiency

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Embodiment Construction

[0015] The present invention is a new type of pulse spectrum stretcher, specifically relates to the use of highly nonlinear fiber (HNLF) with high normal dispersion value to form a 40GHz optical pulse sequence spectrum stretcher to provide high pulse as wavelength division multiplexing (WDM) Repetition frequency broadband coherent light source. For the 40GHz pulse sequence with limited peak power amplification, the new pulse spectrum stretcher adopts the chirped pulse compression technology, and realizes the pulse spectrum broadening by improving the generation efficiency of the supercontinuum (SC) of the HNLF. Improved significantly.

[0016] The construction principle of the pulse spectrum stretcher of the present invention is as follows: firstly, according to the characteristics of the input pulse and the highly nonlinear fiber (HNLF) used, the lengths of the standard single-mode fiber (SMF) and the two sections of HNLF are determined. The length of the HNLF is determined ...

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Abstract

The invention contains two different lengths of highly nonlinear fibers. A standard single-mode fiber is welded between them and is taken as wide- band coherent source of pulse repetition frequency of WDM 40 GHz.

Description

technical field [0001] The invention relates to a device in optical fiber communication, especially a 40GHz optical pulse sequence spectrum stretcher based on a highly nonlinear optical fiber to provide a broadband coherent light source with a high pulse repetition frequency for wavelength division multiplexing (WDM). Background technique [0002] With the rapid development and wide application of the Internet (INTERNET) and IP technology, various new bandwidth services are emerging, and the demand for information in the society is increasing exponentially. Due to the huge bandwidth potential of the optical fiber communication system, it occupies an important position in the communication system. proportion will increase. The all-optical network based on dense wavelength division multiplexing (DWDM) technology has been recognized as an effective way to alleviate the growing communication capacity problem. The common way to improve communication capacity by using WDM technolo...

Claims

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Application Information

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IPC IPC(8): H04B10/25H04B10/508
Inventor 元秀华夏轲王瑾何慧如
Owner HUAZHONG UNIV OF SCI & TECH
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