Silicon-based integrated microwave photon receiving and processing chip

Abstract

A silicon-based integrated microwave photonic front-end receiving and processing chip includes a Mach-Zehnder intensity modulator, an interleaved comb filter, a phase modulator, a reconfigurable bandpass filter, an optical delay line, and a balanced photodetector. The reconfigurable bandpass filter is composed of an optical switch, a high-precision filter based on the stimulated Brillouin scattering effect of a silicon waveguide, and a microring-coupled Mach-Zehnder broadband filter. Through the selection of optical switches, high-definition or broadband filtering of different frequency bands can be realized. The invention can realize microwave photon front-end signal reception, including cross-band, tunable microwave photon signal processing, microwave photon broadband down-conversion, microwave photon local oscillator frequency synthesis and phase shift control, with small size, high integration, low power consumption, Good stability and other advantages can play a key role in microwave photonic front-end signal processing and have important practical application value.

Description

technical field [0001] The invention belongs to the field of optical signal processing, in particular to a silicon-based integrated microwave photon receiving and processing chip. Background technique [0002] With the gradual application of 5G mobile Internet, the next generation of mobile Internet puts forward higher requirements for the microwave front-end. A microwave front-end that can realize multi-band and reconfigurable has become the research goal of scientific researchers. However, since the electronic components used in the 1GHz band and the 20-60GHz band are quite different, it is difficult to achieve tunable and reconfigurable microwave signal processing across bands, which makes it difficult to process microwave signals with frequencies ranging from 1GHz to tens of GHz. It is quite difficult. [0003] In the 1990s, in order to break through the bottleneck in the field of traditional microwave technology, a new technology combining traditional microwave technol...

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Problems solved by technology

[0004] However, most of the current research schemes are realized by discrete devices, which have large size and high power consumption, so there is still a large distance between them and practical applications.

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