Multifunctional microwave signal generation and processing based on equivalent phase modulation

Yang Chen; Beiyue Weng

doi:10.1117/12.2538276

20 November 2019 Multifunctional microwave signal generation and processing based on equivalent phase modulation

Yang Chen, Beiyue Weng

Proceedings Volume 11192, Real-time Photonic Measurements, Data Management, and Processing IV; 111920C (2019) https://doi.org/10.1117/12.2538276
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

A photonic-based approach for multifunctional microwave signal generation and processing is demonstrated based on equivalent phase modulation. The key component of the system is a dual-polarization quadrature phase-shift keying (DPQPSK) modulator. One dual-parallel Mach-Zehnder modulator (DP-MZM) in the DP-QPSK modulator is biased to function as an equivalent phase modulator (e-PM), while the other DP-MZM is biased as a carrier-suppressed singlesideband (CS-SSB) modulator. The two optical signals from the two DP-MZMs are combined and detected in a photodetector. With different driving signals applied to the two DP-MZMs, different functions can be achieved. When the e-PM is driven by a direct current signal to phase shift the optical carrier, and the CS-SSB modulator is to generate a first-order optical sideband of the driving RF signal, a wideband microwave phase shifter is implemented, which can introduce arbitrary phase shift to the electrical driven signal applied to the CS-SSB modulator. Under the above condition, if the CS-SSB modulator is to generator a first-order and an opposite third-order optical sidebands of the driving RF signal, a repetition rate tunable triangular and square waveform generation scheme can be realized. When the e-PM is driving by an electrical coding signal, and the CS-SSB modulator is to generate a first-order optical sideband of the driving RF signal, a reconfigurable pulse compression signal generator is achieved. Experimental verifications are made to demonstrate the multifunctional system, which has the potential to be used in a variety of microwave systems.

Citation Download Citation

Yang Chen and Beiyue Weng "Multifunctional microwave signal generation and processing based on equivalent phase modulation", Proc. SPIE 11192, Real-time Photonic Measurements, Data Management, and Processing IV, 111920C (20 November 2019); https://doi.org/10.1117/12.2538276

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KEYWORDS

Signal processing

Modulators

Microwave radiation

Signal generators

Phase modulation

Phase shift keying

Phase shifts

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