多波段线性调频傅里叶域锁模光电振荡器

doi:10.3969/j.issn.0255-8297.2020.04.009

Abstract

Abstract: A photonic approach to generating reconfigurable multi-band linearly frequency modulated microwave waveform is proposed and experimentally demonstrated based on a Fourier domain mode-locked optoelectronic oscillator (FDML OEO). In the proposed system, a frequency scanning multi-passband microwave photonic filter (MPF) consisting of a frequency scanning multi-wavelength laser, a phase modulator and an optical notch filter is incorporated into the FDML OEO cavity. Multi-band linearly frequency modulated microwave waveform is generated at the output of the FDML OEO by synchronizing the scanning period of the MPF to the cavity round-trip time to achieve Fourier domain modelocking operation. The key significance of the approach is that it allows the generation of multi-band linearly frequency modulated microwave waveforms without using a highspeed baseband single-chirped microwave source. In addition, the central frequency and bandwidth of the generated waveforms can be easily reconfigured. The proposed approach has great potential in applications such as modern multi-band radar and multiple radio access wireless communication networks.

Key words: optoelectronic oscillator, Fourier domain mode locking, linearly frequency modulated waveform, radar, microwave photonics

CLC Number:

P751.1

HAO Tengfei, SHI Nuannuan, LI Wei, ZHU Ninghua, LI Ming. Multi-band Linearly Frequency Modulated Fourier Domain Mode-Locked Optoelectronic Oscillator[J]. Journal of Applied Sciences, 2020, 38(4): 640-646.

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Multi-band Linearly Frequency Modulated Fourier Domain Mode-Locked Optoelectronic Oscillator

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