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Signal generation and transmission system and method based on polarization multiplexing double MZM modulators

A polarization multiplexing and signal generation technology, applied in the field of communication, can solve the problem of the reduction of the signal-to-noise ratio of the optical carrier signal, and achieve the effects of efficient and stable signal transmission, reasonable system structure design, and reduced construction costs

Active Publication Date: 2020-07-14
XIAN UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, since the modulator used is limited by the electronic bandwidth, the signal-to-noise ratio of the modulated optical carrier signal decreases sharply with the increase of the modulation rate, so the potential for further increasing the transmission rate is limited

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  • Signal generation and transmission system and method based on polarization multiplexing double MZM modulators
  • Signal generation and transmission system and method based on polarization multiplexing double MZM modulators

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Embodiment Construction

[0039] Such as figure 1 As shown, the signal generation and transmission system based on polarization multiplexing dual MZM modulators of the present invention includes a central computer room terminal that simultaneously generates wired signals and wireless signals and a wired terminal that performs wired transmission with the central computer room terminal, and performs wireless transmission with the wired terminal. The mobile end of transmission; the end of the central computer room includes a distributed feedback laser 1, a local oscillator 2 and a polarization multiplexing modulator 3, and a first code converter 4 for converting a wireless data signal into a baseband electrical signal and using The second code converter 5 for converting wired data signals into baseband electrical signals; the polarization multiplexing modulator 3 is integrated with a first MZM modulator 3-1, a second MZM modulator 3-2, a polarization splitter Beamer 3-3 and polarization beam combiner 3-4,...

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Abstract

The invention discloses a signal generation and transmission system and method based on polarization multiplexing double MZM modulators. The system comprises a central machine room end, a wired end and a mobile end. The central machine room end comprises a distributed feedback laser, a local oscillator, a polarization multiplexing modulator, a first code pattern converter and a second code patternconverter. The polarization multiplexing modulator is integrated with a first MZM modulator, a second MZM modulator, a polarized light beam splitter and a polarized light beam combiner. The local oscillator is connected with a frequency mixer through a frequency multiplier, and an output end of the polarized light beam combiner is connected with an optical fiber amplifier; the wired end comprisesan optical filter, a first photoelectric detector, a second photoelectric detector, a first power amplifier, a second power amplifier, a transmitting antenna and a first signal processor; the mobileterminal comprises a receiving antenna, a third power amplifier and a second signal processor. The system is reasonable in structure, can be effectively applied to high-capacity wired and wireless hybrid transmission communication, and is good in use effect and convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a signal generation and transmission system and method based on polarization multiplexing dual MZM modulators. Background technique [0002] With the rapid growth of communication services of big data, cloud computing, artificial intelligence, Internet of Things and mobile Internet, the existing optical access network is difficult to meet the future multi-functional, large-capacity wired and wireless hybrid transmission needs, and the development of a new generation of high-speed, broadband Wired and wireless hybrid communication access network technology has become an urgent demand at present. Optical and wireless converged communication technology combines the broadband wireless transmission of millimeter waves and the large-capacity transmission characteristics of optical fibers. It can not only effectively overcome the bandwidth bottleneck of electronic devi...

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Application Information

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IPC IPC(8): H04B10/25H04B10/516H04J14/02H04J14/06
CPCH04B10/516H04J14/0202H04J14/06
Inventor 赵峰余建军李静玲
Owner XIAN UNIV OF POSTS & TELECOMM
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