A Wideband Photonic RF Receiver With Lower IF Frequency Enabled by Kramers–Kronig Detection

Tu, Zhaoyang; Wen, Aijun; Yu, Guopeng; Li, Xiangrui; Zhuo, Hao

doi:10.1109/jlt.2019.2932231

Cited by 4 publications

(1 citation statement)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies on the KK receivers have solved some practical problems [4]- [9]. KK receiver shows its advantages and competitiveness, especially in short-haul communications [10]- [15]. KK receiver needs the signal to meet the requirement of the minimum phase (MP) condition, and the optical signal is generally transmitted with the carrier with enough power.…”

Section: Introductionmentioning

confidence: 99%

DC Restoration by Data-Aided Sequence in Kramers-Kronig Receiver

Su¹,

Yang²,

Ma³

et al. 2022

IEEE Photonics J.

View full text Add to dashboard Cite

In recent years, Kramers-Kronig (KK) receiver has been widely studied because of its simple structure and the ability of digital signal processing (DSP) to recover complex value signals. One practical structure is detecting the optical signal with an ACcoupled photodetector. However, the direct current (DC) component of the photocurrent will be lost, in which case the KK algorithm ceases to be effective. To restore the lost DC component, we propose a simple data-aided method to estimate the DC component by the information of signal mean power stored in the designed data-aided sequences. We introduce a correction coefficient to evaluate the accuracy of our DC estimation by comparing it to the conventional DC sweeping method. Furthermore, the coefficient can be used to combat the DC estimation deviation. We carry out both simulations and experiments to study the performance of the proposed method. The results show that the DC component can be effectively recovered and the system performance is close to the results of the DC sweeping method. At the same time, in the case of low optical signal-to-noise ratio, optimization of correction coefficient can effectively improve the system performance.

show abstract

Section: Introductionmentioning

confidence: 99%

DC Restoration by Data-Aided Sequence in Kramers-Kronig Receiver

Su¹,

Yang²,

Ma³

et al. 2022

IEEE Photonics J.

View full text Add to dashboard Cite

show abstract

Microwave photonic frequency down-conversion with self-interference cancellation and SSBI mitigation

Wen

et al. 2022

Optics Communications

View full text Add to dashboard Cite

Utilization of slow light enhancement of four-wave mixing within a silicon photonic crystal for microwave frequency measurement purposes

Ebnali-Heidari

Emami

2021

J. Opt. Soc. Am. B

View full text Add to dashboard Cite

We report the demonstration of an instantaneous frequency measurement system based on the four-wave mixing (FWM) effect in short dispersion engineered slow-light silicon photonic crystal waveguides for RF frequency measurement purposes within a range of 10 MHz to 80 GHz. Three nonlinear media were investigated including 3 mm ridge waveguide, 80 µm nanowire, and 80 µm photonic crystal (PhC). The system size could thus be decreased, and as a result system integration would become possible. We have shown that the optical power required to excite FWM is low enough to remove any need for optical amplification, and hence the system noise floor will be kept low. Issues due to the amplifier saturation will also be resolved this way. As a result, no noise reduction system, like lock-in amplification, would be required. A better system latency will also be achieved accordingly. The system dynamic range would also be improved in two ways. First, due to the low noise floor, and second, because of removing any optical amplifier that possibly could become saturated at higher power levels. All three media behaviors were simulated by the split step Fourier method, and the results showed that the best medium to be used is PhC.

show abstract

A Wideband Photonic RF Receiver With Lower IF Frequency Enabled by Kramers–Kronig Detection

Cited by 4 publications

References 30 publications

DC Restoration by Data-Aided Sequence in Kramers-Kronig Receiver

DC Restoration by Data-Aided Sequence in Kramers-Kronig Receiver

Microwave photonic frequency down-conversion with self-interference cancellation and SSBI mitigation

Utilization of slow light enhancement of four-wave mixing within a silicon photonic crystal for microwave frequency measurement purposes

Contact Info

Product

Resources

About