Microwave Photonic Frequency Translators With Large Spurious Suppression and Wide Bandwidth

Huang, Chongjia; Chan, Erwin H. W.

doi:10.1109/jphot.2021.3062801

Cited by 5 publications

(1 citation statement)

References 14 publications

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“…The peak-to-peak amplitude of the ramp waveform is twice the BPSK modulator DC port switching voltage. This results in shifting the frequency of the light traveled in one arm of the BPSK modulator [20], [21]. The amount of the frequency shift is the same as the input ramp waveform frequency, which can be 50 kHz for example.…”

Section: Introductionmentioning

confidence: 99%

Wideband High-Speed and High-Accuracy Instantaneous Frequency Measurement System

et al. 2023

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A new photonic-assisted instantaneous frequency measurement system is presented. It overcomes the latency problem in the reported structures based on the frequency-to-time mapping technique or the frequency-to-power mapping technique that involves a long length of fiber, and at the same time, enables the incoming microwave signal frequency to be measured over a wide frequency range with only small errors. The system generates three low-frequency signals. The phases of the three low-frequency signals are compared. One of the two low-frequency signal phase differences is used to estimate the incoming microwave signal frequency unambiguously over a wide frequency range and the other is used to provide accurate microwave signal frequency measurement. A proof-of-concept experiment is set up. Experimental results show, by measuring the phase difference of two low-frequency signals, the frequency of the input microwave signal can be determined unambiguously in 15 GHz and 500 MHz frequency ranges with errors below ±220 MHz and ±10 MHz respectively. Hence, by using two low-frequency signal phase differences, the input microwave signal frequency can be determined accurately over a wide frequency range. The new photonic-assisted frequency measurement system has a fast response time, which is an order of magnitude shorter than that of the systems based on the frequency-to-time mapping technique and the frequency-to-power mapping technique with a kilometer-long fiber.

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Section: Introductionmentioning

confidence: 99%