Abstract

Multiband microwave photonic filters (MPFs) are extensively required in emerging multifunction RF systems and high-performance radar systems. In this article, we present a reconfigurable and tunable multiband MPF. The flexible amplitude and phase controls of the multiband MPF can be achieved via optical spectral slicing by way of a programmable sampling function, i.e., varying the number of samples or the duty cycle of each sample. We verify that the number of uniform passbands can be adjusted (we obtain up to six passbands) and demonstrate a frequency tuning range of up to 432 MHz for a uniform triple-passband MPF. We also show a highly chirped triple-passband MPF with respective in-band chirps up to 30.0 ns/GHz, 42.1 ns/GHz, and 22.8 ns/GHz. These latter results illustrate a potential way to implement highly chirped multiband MPFs for high bandwidth signal processing applications.

Tunable microwave photonic notch filter based on sliced broadband optical source

Yang Yu, Shangyuan Li, Xiaoping Zheng, Hanyi Zhang, and Bingkun Zhou
Opt. Express 23(19) 24308-24316 (2015)

Tunable all-optical single-bandpass photonic microwave filter based on spectrally sliced broad optical source and phase modulation

Ming Chen, Wei Pan, Xihua Zou, Bin Luo, Lianshan Yan, and Xinkai Liu
Appl. Opt. 52(2) 302-306 (2013)

Dual-frequency optoelectronic oscillator incorporating a single cavity and multiband microwave photonic filter

Ling Liu, Xian Jin, Tigang Ning, Lawrence R. Chen, and José Capmany
Opt. Express 29(9) 14006-14015 (2021)

Fully programmable spectrum sliced chirped microwave photonic filter

Peter Leitner, Xiaoke Yi, Liwei Li, and Thomas X. H. Huang
Opt. Express 23(4) 4033-4045 (2015)

Widely tunable single-bandpass microwave photonic filter employing a non-sliced broadband optical source

Xiaoxiao Xue, Xiaoping Zheng, Hanyi Zhang, and Bingkun Zhou
Opt. Express 19(19) 18423-18429 (2011)