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Signal generation and transmission method based on polarization multiplexed dual mzm modulator

A technology of polarization multiplexing and transmission method, which is applied in the field of communication, can solve the problems such as the reduction of the signal-to-noise ratio of optical carrier signals, and achieve the effects of efficient and stable signal transmission, reasonable structural design, and reduced construction costs

Active Publication Date: 2021-06-25
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

Method used

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  • Signal generation and transmission method based on polarization multiplexed dual mzm modulator
  • Signal generation and transmission method based on polarization multiplexed dual mzm modulator

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Embodiment Construction

[0039] like 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, de...

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Abstract

The invention discloses a signal generation and transmission system and method based on polarization multiplexing dual MZM modulators. The system includes a central computer room terminal, a wired terminal and a mobile terminal; the central computer room terminal includes a distributed feedback laser, a local oscillator, and a polarization multiplexing modulation device, the first code converter and the second code converter, the polarization multiplexing modulator is integrated with the first MZM modulator, the second MZM modulator, the polarization beam splitter and the polarization beam combiner, and the local oscillator passes through The frequency multiplier is connected with a frequency mixer, and the output end of the polarization beam combiner is connected with a fiber amplifier; the wired end includes an optical filter, a first photodetector, a second photodetector, a first power amplifier, a second power amplifier, The transmitting antenna and the first signal processor; the mobile terminal includes the receiving antenna, the third power amplifier and the second signal processor. The system structure of the invention is reasonable, can be effectively applied in large-capacity wired and wireless mixed transmission communication, has good use effect, and is convenient for popularization 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 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 devices, but al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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