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IMDD optical communication system based on nonlinear differential coding and secondary VNLE

An optical communication system and differential coding technology, applied in the field of optical communication, can solve the problems of poor channel coding effect, limited transmission distance, high bit error rate bottom limit, etc., to improve transmission performance, extend transmission distance, and improve system performance Effect

Active Publication Date: 2021-10-15
TONGJI UNIV
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Problems solved by technology

[0003] Document 1 "100Gb / s Intensity Modulation and Direct Detection" proposes that Intensity Modulation and Direct Modulation (IM / DD) technology is more practical in short-range communication, so the current research on IMDD communication technology is also advancing, but In the prior art, the fiber channel of the IMDD communication system suffers from linear damages such as attenuation and chromatic dispersion, as well as nonlinear damages caused by instantaneous chirp and adiabatic chirp, etc., resulting in poor channel coding effect and low bit error rate. The bottom line is high and the transmission distance is limited

Method used

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  • IMDD optical communication system based on nonlinear differential coding and secondary VNLE
  • IMDD optical communication system based on nonlinear differential coding and secondary VNLE
  • IMDD optical communication system based on nonlinear differential coding and secondary VNLE

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Embodiment Construction

[0036] Next, the technical solutions in the embodiments of the present invention will be described in contemplation in the embodiments of the present invention, which will be described, and it is understood that the described embodiments are intended to be in an embodiment of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained without making creative labor without making creative labor, and should belong to the scope of the present invention.

[0037] An IMDD optical communication system based on nonlinear differential encoding and secondary VNLe, such as figure 1 As shown, including signal generation module 1, signal modulation module 2, signal encoding module 3, direct modulation laser 4, optical fiber link 5, digital signal processing module 6, signal demodulation module 7, signal decoding module 8, and signals Receiving module 9;

[0038] Signal generation module 1 for generating communication sig...

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Abstract

The invention relates to an IMDD optical communication system based on nonlinear differential coding and secondary VNLE. The IMDD optical communication system comprises a signal generation module, a signal modulation module, a signal coding module, a direct modulation laser, an optical fiber link, a digital signal processing module, a signal demodulation module, a signal decoding module and a signal receiving module which are connected in sequence. Compared with the prior art, the method has the advantages of good channel transmission performance, high reliability, long transmission distance and the like.

Description

Technical field [0001] The present invention relates to the field of optical communication technologies, and more particularly to an IMDD optical communication system based on nonlinear differential encoding and secondary VNL. Background technique [0002] In today's information society, the rapid growth of data center traffic requires higher capacity Ethernet links, higher baud signals. The demand of the optical access capacity and the rate of the rate makes high-speed, low cost access technologies into the main research topics of optical access networks. High performance optical transmission techniques based on intensity modulation and direct modulation (IM / DD) can achieve low-cost high-speed light transmission. [0003] Program 1 "100GB / S INTENSITY MODTITION AND DIRECT DETECTION" proposed, intensity modulation and direct modulation (IM / DD) technology is more practical in short-range communication, so the current research of IMDD communication technology is constantly adv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/50H04B10/54
CPCH04B10/54H04B10/504
Inventor 周俊鹤李浩然王玉桁
Owner TONGJI UNIV
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