All-Optical Windowed Binary Phase-Coded Microwave Waveform Generation

Yang Hu, Erwin Hoi Wing Chan, Xudong Wang, Xinhuan Feng, Bai Ou Guan, Jianping Yao

    Research output: Chapter in Book/Report/Conference proceedingConference Paper published in Proceedingspeer-review


    An approach to all-optical windowed binary phase-coded microwave waveform generation is proposed and demonstrated. An optical double sideband plus carrier (DSB+C) signal with the carrier and the two sidebands being orthogonally polarized is generated by a dual-polarization quadrature phase shift keying (DP-QPSK) modulator, with the generated signal sent to a phase modulator (PM). The PM can support phase modulation in two orthogonal polarization directions. The phase-modulated signals are projected to one polarization direction and detected at a photodetector (PD). Switching the polarity of the coding signal, a π phase shift is introduced. In addition, the amplitude of the generated signal is dependent on the amplitude of the input coding signal. Thus, a windowing function can be applied to the generated waveform by using a windowed input phase coding signal, to suppress the sidelobes in the spectrum of the generated microwave signal. The key features of the proposed waveform generator include all-optical generation without the need of electrical components and optical filters, thus ensuring a wide operating frequency range. Experimental results show that, using a Gaussian windowed 64-bit pseudorandom binary sequence (PRBS) coding signal, a microwave phase-coded microwave waveform is generated with the sidelobes of the spectrum largely suppressed to below the system noise floor and a pulse compression ratio (PCR) as large as 133.

    Original languageEnglish
    Title of host publication2021 International Topical Meeting on Microwave Photonics, MWP 2021
    Place of PublicationPiscataway, USA
    PublisherIEEE, Institute of Electrical and Electronics Engineers
    Number of pages4
    ISBN (Electronic)9781665426107
    Publication statusPublished - 2021
    Event2021 International Topical Meeting on Microwave Photonics, MWP 2021 - Pisa, Italy
    Duration: 15 Nov 202117 Nov 2021

    Publication series

    Name2021 International Topical Meeting on Microwave Photonics, MWP 2021


    Conference2021 International Topical Meeting on Microwave Photonics, MWP 2021


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