This article proposes a pulsed arbitrary-phase-coded microwave signals (APCMSs) photonics generation system. The key to this scheme is to achieve the single-sideband modulated (SSBM) optical signal with the conversion capability between intensity modulation and phase modulation by utilizing dual-parallel Mach–Zehnder modulator (DPMZM) and optical bandpass filter (OBPF). Through heterodyne detection of the SSBM optical signal, pulsed APCMSs can be generated. Unlike previous continuous-wave (CW) APCMSs and pulsed binary phase-coded microwave signals (PCMSs) photonics generation schemes, our scheme provides a pulsed APCMSs generation scheme. The scheme realizes the generation of APCMSs without CW background signals, and the scheme is not only suitable for binary phase codes but also suitable for arbitrary phase codes. The useless CW background signals are effectively suppressed without cascading an intensity modulator for gating operation and the coded phases are linear with the input pre-encoding signals amplitudes, leading to great improvement of practical application values. A theory analysis, a system simulation, and a proof-of-concept experiment are provided. Simulation demonstrates the generations of 2-Gbps 14-GHz and 1-Gbps 16-GHz pulsed APCMSs. The generations of 2-Gbps 14-GHz and 1-Gbps 16-GHz pulsed PCMSs with a 13-bit binary Barker-code and a 16-bit quaternary Frank-code are verified in experiment.

中文翻译：

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基于强度调制和相位调制转换的脉冲任意相位编码微波信号的光子生成

本文提出了一种脉冲任意相位编码微波信号 (APCMS) 光子学生成系统。该方案的关键是利用双并行马赫-曾德调制器（DPMZM）和光带通滤波器（OBPF）实现具有强度调制和相位调制之间转换能力的单边带调制（SSBM）光信号。通过对 SSBM 光信号的外差检测，可以生成脉冲 APCMS。与之前的连续波 (CW) APCMS 和脉冲二进制相位编码微波信号 (PCMS) 光子生成方案不同，我们的方案提供了脉冲 APCMS 生成方案。该方案实现了无CW背景信号的APCMSs的生成，该方案不仅适用于二进制相位编码，也适用于任意相位编码。有效抑制无用的连续波背景信号，无需级联强度调制器进行门控操作，编码相位与输入预编码信号幅度呈线性关系，实际应用价值得到极大提升。提供了理论分析、系统仿真和概念验证实验。仿真演示了 2 Gbps 14 GHz 和 1 Gbps 16 GHz 脉冲 APCMS 的生成。在实验中验证了具有 13 位二进制 Barker 码和 16 位四进制 Frank 码的 2 Gbps 14 GHz 和 1 Gbps 16 GHz 脉冲 PCMS。提供了系统模拟和概念验证实验。仿真演示了 2 Gbps 14 GHz 和 1 Gbps 16 GHz 脉冲 APCMS 的生成。在实验中验证了具有 13 位二进制 Barker 码和 16 位四进制 Frank 码的 2 Gbps 14 GHz 和 1 Gbps 16 GHz 脉冲 PCMS。提供了系统模拟和概念验证实验。仿真演示了 2 Gbps 14 GHz 和 1 Gbps 16 GHz 脉冲 APCMS 的生成。在实验中验证了具有 13 位二进制 Barker 码和 16 位四进制 Frank 码的 2 Gbps 14 GHz 和 1 Gbps 16 GHz 脉冲 PCMS。