Ultrafast Optical Techniques for Communication Networks and Signal Processing

Shastri, Bhavin J.; Chang, John; Tait, Alexander N.; Chang, Matthew P.; Wu, Ben; Nahmias, Mitchell A.; Prucnal, Paul R.

doi:10.1007/978-3-319-14992-9_15

Cited by 3 publications

(1 citation statement)

References 68 publications

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“…The optical carrier frequencies are much higher than both RF baseband signals and RF carrier frequencies. The carrier frequency for c-band optical communication is 193THz, which is at least four orders of magnitude larger than the maximum frequency of most RF signals in the 4th generation (4G) networks [41]. The large carrier frequencies enable unanimous frequency response in GHz bandwidth, which means optical and photonic devices can process signal with GHz bandwidth.…”

Section: Photonic Signal Processingmentioning

confidence: 99%

Wideband Anti-Jamming Based on Free Space Optical Communication and Photonic Signal Processing

Yang

Qiu

et al. 2021

Sensors

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We propose and demonstrate an anti-jamming system to defend against wideband jamming attack. Free space optical communication is deployed to provide a reference for jamming cancellation. The mixed signal is processed and separated with photonic signal processing method to achieve large bandwidth. As an analog signal processing method, the cancellation system introduces zero latency. The radio frequency signals are modulated on optical carriers to achieve wideband and unanimous frequency response. With wideband and zero latency, the system meets the key requirements of high speed and real-time communications in transportation systems.

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Section: Photonic Signal Processingmentioning

confidence: 99%

Wideband Anti-Jamming Based on Free Space Optical Communication and Photonic Signal Processing

Yang

Qiu

et al. 2021

Sensors

Self Cite

View full text Add to dashboard Cite

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Sub-Nyquist optical pulse sampling for photonic blind source separation

et al. 2022

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We propose and experimentally demonstrate an optical pulse sampling method for photonic blind source separation. The photonic system processes and separates wideband signals based on the statistical information of the mixed signals, and thus the sampling frequency can be orders of magnitude lower than the bandwidth of the signals. The ultra-fast optical pulses collect samples of the signals at very low sampling rates, and each sample is short enough to maintain the statistical properties of the signals. The low sampling frequency reduces the workloads of the analog to digital conversion and digital signal processing systems. In the meantime, the short pulse sampling maintains the accuracy of the sampled signals, so the statistical properties of the under-sampled signals are the same as the statistical properties of the original signals. The linear power range measurement shows that the sampling system with ultra-narrow optical pulse achieves a 30dB power dynamic range.

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