High-bandwidth microwave photon filter based on stimulated Brillouin scattering effect and binary system phase shift keying technology

A technology of stimulated Brillouin and phase shift keying, which is applied in the field of microwave photonics, and can solve the problems of unsuitable high-speed communication systems and narrow passbands.

Inactive Publication Date: 2014-03-26
JILIN UNIV
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Problems solved by technology

Microwave photonic filters based on the stimulated Brillouin scattering effect have been widely studied because of their single passband and high out-of-band rejection ratio, but the output response of this filter is not the same as the stimulated Brillouin gain ( or loss) spectrum, and the bandwidth of the stimulated Brillouin gain (or loss) is usually narrow, so the passband of this filter is narrow, not suitable for high-speed communication systems

Method used

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  • High-bandwidth microwave photon filter based on stimulated Brillouin scattering effect and binary system phase shift keying technology
  • High-bandwidth microwave photon filter based on stimulated Brillouin scattering effect and binary system phase shift keying technology
  • High-bandwidth microwave photon filter based on stimulated Brillouin scattering effect and binary system phase shift keying technology

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Embodiment 1

[0022] Select the TSL-510 tunable laser from Santec Company as the carrier light source, set the wavelength to 1550nm (the corresponding frequency is f c =193.41THz), the splitter (model ZG-A201) has a splitting ratio of 1:1; the first phase modulator and the second phase modulator are MPZ-LN-40 from Photline, and the bandwidth is 32GHz; network analysis The instrument is Agilent's 8722ES vector network analyzer with a frequency range of 50M-40GHz; the photodetector is Tektronix's SD-48 with a bandwidth of 35GHz; the highly nonlinear optical fiber of YOFC Co., Ltd., the Brillouin gain linewidth for Γ B =30MHz, Brillouin frequency shift f B =10GHz, the length is 1000 meters, the peak value of gain and loss is 5dB; the isolation of the optical isolator is greater than 40dB; the intensity modulator is MXAN-LN-40 of Photline Company, and the bandwidth is 32GHz; the tunable optical filter of Santec Company, The model is OTF-950, the wavelength tuning range is 1548nm to 1552nm, an...

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Abstract

The invention provides a high-bandwidth microwave photon filter based on a stimulated Brillouin scattering effect and a binary system phase shift keying technology, and belongs to the technical field of microwave photonics. The high-bandwidth microwave photon filter is composed of a laser, a coupler, a first phase modulator, an optical isolator, a vector network analysis meter, a high non-linear optical fiber, a strength modulator, an optical filter, a second phase modulator, an impulse code type generator, an Er-doped fiber amplifier, an optimal circulator and a photoelectric detector. The bandwidth of pumping signals is broadened through the binary system phase shift keying technology, the broadened pumping signals will generate a broadened stimulated Brillouin gain spectrum, and therefore the single-passband response microwave photon filter system with the broadened and adjustable bandwidth is obtained.

Description

technical field [0001] The invention belongs to the technical field of microwave photonics, and in particular relates to a high-bandwidth microwave photon filter realized based on highly nonlinear optical fiber stimulated Brillouin scattering effect and binary phase-shift keying technology. Background technique [0002] Microwave photonic filters can directly process microwave and millimeter wave signals in the optical domain, and it has the advantages of large bandwidth, low loss and anti-electromagnetic interference inherent in photonic technology. Moreover, microwave photonic filters have flexible reconfigurability and tunability, which is almost impossible to realize with traditional electronic technology. [0003] There are many ways to implement microwave photonic filters. Among them, negative coefficient filters are used to eliminate baseband resonance to achieve band-pass response; complex coefficient filters are used to ensure that the frequency response characteris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/365
Inventor 董玮肖永川陈维友张歆东刘彩霞阮圣平周敬然郭文滨沈亮温善鹏
Owner JILIN UNIV
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