Reconfigurable weighed microwave photonics filters based on finite impulse response (FIR)

Jingyang Lou; Tingge Dai; Xianmin Zhang

doi:10.1117/12.2644381

9 September 2022 Reconfigurable weighed microwave photonics filters based on finite impulse response (FIR)

Jingyang Lou, Tingge Dai, Xianmin Zhang

Proceedings Volume 12328, Second International Conference on Optics and Image Processing (ICOIP 2022); 123280G (2022) https://doi.org/10.1117/12.2644381
Event: Second International Conference on Optics and Image Processing (ICOIP 2022), 2022, Taian, China

Abstract

A reconfigurable optical FIR filter based on delay interference structure is proposed, which can realize band-pass and band-stop filtering. The interference structure is mainly composed of an adjustable beam splitter based on Mach-Zehnder interferometer(MZI) structure and a delay line with a phase shifter. Light can be guided to four paths that have different delays and different optical transmission spectrum can be achieved by tuning the amplitude and phase of the four paths by tuning the phase shift of the MZI and delay line. To optimize the transmission spectrum, the theoretical model of the delay interference filter is established and simulated by the transmission matrix method. The simulation results show that the extinction ratio of band-pass filter is greater than 15dB, the extinction ratio of band-stop filter is greater than 40dB, and the in-band fluctuation is lower than 1.5dB.

Citation Download Citation

Jingyang Lou, Tingge Dai, and Xianmin Zhang "Reconfigurable weighed microwave photonics filters based on finite impulse response (FIR)", Proc. SPIE 12328, Second International Conference on Optics and Image Processing (ICOIP 2022), 123280G (9 September 2022); https://doi.org/10.1117/12.2644381

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