Generation of Reconfigurable Frequency-Conversion Signals with Full-Range Phase Shift Based on Microwave Photonics

He, 李赫 Li; Shanghong, 赵尚弘 Zhao; Jixiang, 吴吉祥 Wu; Tao, 林涛 Lin; Kun, 张崑 Zhang; Guodong, 王国栋 Wang; Wei, 蒋炜 Jiang; Xuan, 李轩 Li

doi:10.3788/aos202040.0825001

Cited by 3 publications

(1 citation statement)

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“…Since the PM-QPSK used in this scheme has six DC bias points, the drift of the DC bias voltage will inevitably affect the quality of the generated signal to some extent. 20 In practice, the influence of the bias of each bias point of a multi-bias modulator on the final signal is complicated and difficult to predict, and the stability of the whole system may not be determined only by considering the drift of a certain bias point. Therefore, this paper mainly analyzes the impact of simultaneous drift of two DC bias points on the signal.…”

Section: Influence Of DC Bias Point Driftmentioning

confidence: 99%

Periodic asymmetric function waveform generator based on polarization multiplexing modulator

Wang,

Li,

Yan

et al. 2024

Opt. Eng.

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An asymmetric waveform signal generation scheme based on dual polarization multiplexing-quadrature phase shift keying (PM-QPSK) modulator is proposed and analyzed. The key technique to generate periodic asymmetrical function waveform is how to control the amplitude and phase of the Fourier series of the target waveform simultaneously. In order to achieve this function in this proposal, a continuous-wave laser is modulated by radio-frequency signals with various phases, using a PM-QPSK modulator. The orthogonal sine and cosine harmonic signals are output through a polarization beam combiner. A polarizer is then employed to balance the power of these two orthogonal signals. By properly adjusting the variables, both the amplitude and phase of the Fourier series of the target waveform can be simultaneously set. When the root mean square error is <5%, a half duty cycle ramp wave signal with adjustable slope (20% ≤ δ ≤ 80%) can be obtained. In addition, the influence of variable drift on the target waveform is analyzed in detail.

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Section: Influence Of DC Bias Point Driftmentioning

confidence: 99%