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A multi-carrier generation system based on single-stage modulation of dispersion-flat fiber

A dispersion-flattened fiber and multi-carrier technology is applied in the field of multi-carrier generation systems to achieve the effects of improving flatness, suppressing noise, and novel solutions

Active Publication Date: 2017-12-29
LIAOCHENG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the UDWDM-PON system, Nokia Siemens only proposed the concept of Optical Transmission Group (OTG), using subcarrier modulation to make each laser generate a group of 10 optical carriers, which can increase the number of OTG as needed, but did not involve specific parameters

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  • A multi-carrier generation system based on single-stage modulation of dispersion-flat fiber
  • A multi-carrier generation system based on single-stage modulation of dispersion-flat fiber

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and implementation.

[0017] figure 1 As shown, the continuous laser light generated by the narrow linewidth NDFB laser (1) is input to a 40G high-speed broadband modulator (3) for modulation after the polarization is adjusted by the polarization controller (2), and the modulation signal is Agilent BER 81250 (4 ) output 2.5GHz clock signal; after the clock is attenuated by the 6dB electric attenuator (5), it is amplified by the electric amplifier SHF803P (6), and then modulates the laser in the modulator (3). carrier, such as figure 2 (a) shows the spectrum scanned by the spectrometer AQ6319; the spectrum is amplified by the erbium-doped fiber amplifier (7) of Keopsys and then input to the dispersion-flat fiber module B5RBBO (8) for nonlinear equalization processing to obtain the required frequency interval of 2.5 GHz , ultra-dense multi-carriers with flat spectral pea...

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Abstract

The present invention proposes a multi-carrier generation system based on single-stage modulation of dispersion-flat optical fiber. The clock signal output by the Agilent BER 81250 is amplified and sent to the modulator to modulate the laser. At this time, an ultra-dense multi-carrier with an uneven spectrum is generated; the After the spectrum is amplified, it is input to the dispersion-flat optical fiber module for nonlinear equalization processing, and the ultra-dense multi-carrier with the required spectral peak flatness is obtained; the obtained flat spectrum can be used as a small group, which can be compatible with a channel in the waveguide array grating multiplexer; More groups correspond to more channels, resulting in an ultra-dense, flat output of more multi-carrier spectral peaks.

Description

Technical field [0001] The invention relates to a multi-carrier generation system based on single-stage modulation of dispersion-flat optical fiber, which can be applied to the fields of ultra-dense wavelength division multiplexing optical access network, nonlinear optics and the like. Background technique [0002] In recent years, various business flows caused by cloud computing, big data and streaming media have increased rapidly. Countries around the world have successively formulated national broadband strategies, and my country has also proposed strategic goals in "Broadband China". In 2013, the "Broadband China" strategy and implementation plan deployed the broadband development goals and paths for the next eight years, which means that the "Broadband Strategy" has been upgraded from a departmental action to a national strategy, and broadband has become a national strategic public infrastructure for the first time. In 2015, Premier Li Keqiang put forward the "Internet ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02H04B10/50H04B10/548
CPCH04B10/506H04B10/548H04J14/0215
Inventor 郑宏军黎昕刘山亮胡卫生白成林
Owner LIAOCHENG UNIV