- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Microwave Photonic Signal Processing and Sensing Based on Optical Filtering
摘要： Microwave photonics, based on optical filtering techniques, are attractive for wideband signal processing and high-performance sensing applications, since it brings significant benefits to the fields by overcoming inherent limitations in electronic approaches and by providing immunity to electromagnetic interference. Recent developments in optical filtering based microwave photonics techniques are presented in this paper. We present single sideband modulation schemes to eliminate dispersion induced power fading in microwave optical links and to provide high-resolution spectral characterization functions, single passband microwave photonic filters to address the challenges of eliminating the spectral periodicity in microwave photonic signal processors, and review the approaches for high-performance sensing through implementing microwave photonics filters or optoelectronic oscillators to enhance measurement resolution.
关键词： Microwave photonics,photonic filtering,photonic signal processing,single sideband modulation,single passband microwave photonic filter,optical sensors
更新于2025-09-23 15:23:52
-
Widely tunable single bandpass microwave photonic filter based on dual-fiber stimulated Brillouin scattering
摘要： A new technique to achieve a single bandpass microwave photonic filter (MPF) with wide tunability based on stimulated Brillouin scattering is proposed. The MPF cascades the Brillouin frequency shifter and amplification based on a dual-fiber structure. The experimental results present a single bandpass MPF located at 21.4 GHz with a 3-dB bandwidth of 38 MHz and an out-of-band rejection ratio over 30 dB. The proposed single bandpass MPF also successfully demonstrates a wide-band tuning over 40 GHz, which is achieved by employing a frequency shifter based on carrier suppressed single-sideband modulation scheme in the structure.
关键词： Brillouin frequency shift,stimulated Brillouin scattering,fiber,microwave photonic filter,carrier suppressed single-sideband modulation
更新于2025-09-23 15:23:52
-
[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - MEMS-Based Tunable Single-Passband Microwave Photonic Filter
摘要： Single-passband microwave photonic filters have significant advantages such as wide tuning range and high reconfigurability making them attractive photonic subsystems for modern telecommunication systems. However, implementation of such a reconfigurable subsystem requires compact, reliable and low cost tuning mechanism. We report a novel Microelectromechanical Systems (MEMS)-based tunable single-passband microwave photonic filter that uses a chirped fiber Bragg grating as a dispersive element, instead of the conventional single mode optical fiber cable. The tunability is accomplished using a MEMS interferometer implemented by inserting a cleaved single mode fiber in front of a gold-platted micromirror fabricated by Deep Reactive Ion Etching (DRIE) on a Silicon On Insulator (SOI) wafer. The filter is tuned by changing the length between the fiber end and the mirror (ΔL).
关键词： microwave photonic filter,chirped fiber Bragg grating,MEMS,single-passband,tunable,MEMS interferometer
更新于2025-09-19 17:13:59