Microwave photon channelization receiving method based on polarization multiplexing optical frequency dispersion and integrated coherent receiver

A coherent receiver, microwave photonic technology, applied in the field of optical communication, can solve the problems of slow stopband attenuation of optical filters, difficult to achieve channelization with high isolation between channels, etc., to suppress the interference of image signals, improve the corresponding amplitude, The effect of reducing requirements

Active Publication Date: 2020-12-18
XIDIAN UNIV
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Problems solved by technology

However, it is also limited by the slow attenuation of the stop band of the optical filter, and it is also difficult for this channelized receiver to achieve channelized analysis with high inter-channel isolation.

Method used

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  • Microwave photon channelization receiving method based on polarization multiplexing optical frequency dispersion and integrated coherent receiver
  • Microwave photon channelization receiving method based on polarization multiplexing optical frequency dispersion and integrated coherent receiver
  • Microwave photon channelization receiving method based on polarization multiplexing optical frequency dispersion and integrated coherent receiver

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Embodiment Construction

[0045] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following The described embodiment:

[0046] As attached in the manual figure 1 As shown, in this example, the device includes, including LD, signal source, MZM, OC, EDFA, optical OBPF, DP-QPSK, PC, and ICR. The output of LD is divided into two channels through OC, the upper channel is connected to MZM, the upper sideband is reserved through EDFA1 and OBPF1, and then the polarization state is adjusted by PC and sent to the sig input terminal of ICR. The drop channel is connected with DP-QPSK, passes through EDFA2 and then passes through OBPF2 to retain the upper sideband, and then sends it to the LO inpu...

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Abstract

The invention discloses a microwave photon channelization receiving method based on polarization multiplexing optical frequency dispersion and an integrated coherent receiver, and relates to the technical field of microwaves and the technical field of optical communication. The method is as shown in Figure 1 in the specification, and a light source, a radio frequency signal source, a Mach-Zehndermodulator, an optical coupler, an erbium-doped fiber amplifier, an optical band-pass filter, a double-parallel quadrature phase shift keying modulator, a polarization controller and an integrated coherent receiver (ICR) are included. And channelized receiving of four channels can be realized only by using two linearly polarized multiplexed local oscillator optical frequency combs. In addition, according to the method, the problem of mirror image interference existing in the dual-optical-frequency microwave photon channelization receiver is solved by combining ICR with a digital signal processing DSP algorithm. Because no high-frequency electric device is used, the method has the advantages of large bandwidth, high image rejection ratio and the like. Due to the fact that optical carriers are restrained and balance detection is adopted, the method further has the advantage of being high in gain.

Description

technical field [0001] The invention relates to the technical field of optical communication and microwave technology, and mainly relates to microwave photon channelization receiver technology. Background technique [0002] Channelized reception generally refers to channel division in the frequency domain. The function of the channelized receiver is to divide the wideband signal in the frequency domain into multiple narrowband signals, and then indirectly complete the processing of the large bandwidth signal by processing the divided narrowband signals. [0003] The most intuitive implementation of the channelization receiver is to use the point filter to complete the channelization division, which is also the earliest implementation of the channelization receiver, that is, the electrical analog channelization receiver. Electrical analog channelized receivers are divided into pure channelized receivers, frequency band folded channelized receivers and time-division channeliz...

Claims

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Application Information

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IPC IPC(8): H04B10/61
CPCH04B10/61H04B10/613
Inventor 田博文爱军张武
Owner XIDIAN UNIV
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