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We demonstrate a 70 Gbit/s photonic wireless link on a single carrier at 60 GHz using a single polarization. To our knowledge, this is the highest data rate on a single polarization 60 GHz carrier.
Optically-connected distributed-type millimeter-wave radar system is one of the key solutions to develop a wide coverage, a high detection performance and a high-resolution radar with a low cost. We have been developed optically-connected 96 GHz millimeter-wave radar system to detect small foreign object debris on the airport runways. The radar transmission signal is delivered to the antenna by the...
An approach to generate high-linearity low-phase-noise chirped microwave waveform based on rapidly-tunable optoelectronic oscillator is proposed and experimentally demonstrated. The tunabiliiy of the OEO is achieved by embedding an equivalent rapidly-tunable microwave filter in the opto-electronic cavity and frequency tuning rate of 1.17 GHz/μs is proved. The generated chirped microwave waveform,...
Here we show a new approach to create a sharp tunable microwave bandstop filter. Using a low Brillouin loss of ∼3 dB, we achieved 20-dB extinction filter over a tunable bandwidth of up to 1 GHz with a central frequency tuning range of 16 GHz.
We demonstrate a microwave photonic Interference canceller with a balanced architecture capable of relative-intensity noise suppression. Experimental results show that the system can cancel > 25 dB interference over 200 MHz instantaneous bandwidth and tune over a frequency range of 2–8 GHz.
We demonstrate high speed and high power evanescently-coupled waveguide modified uni-traveling-carrier photodiodes. These devices achieved 70 GHz bandwidth and as high as 7.8 dBm RF output power at 60 GHz.
We present a wavelength-dependent optical true time delay (TTD) for K-band radio beamformer targeting home-satellite communication. A proof-of-concept of optically-assisted radio beamformer with a TTD bandwidth of 2GHz is experimentally demonstrated. The beamformer is capable of generating multiple radio beams if multiple wavelengths are employed.
We report RF-spectrum analysis of optical signals based on cross-phase-modulation in a silicon-rich nitride waveguide. Measurements show a bandwidth of at least 560 GHz for our RF-spectrum analyzer. RF-spectra measurements for pulse trains at rates from ∼ 10 GHz to ∼ 160 GHz are demonstrated.
Many new and exciting avionic sensing and surveillance systems are demanding more and more bandwidth to share data between onboard systems [1]. Most of these systems rely on high speed electrical transmission lines that are heavy, bulky, sensitive to EMI and increasingly unable to cope with the very high bandwidths required for large data handling. Traditional ground based telecommunications have...
In this work we characterize the RF modulation characteristics and the dynamic range of a III-V-on-Silicon DFB laser. The direct modulation of this laser is demonstrated with a 1Gbps radio-over-fiber link at a carrier frequency up to 24 GHz using QPSK modulation. 480Mbps 64-QAM transmission at 3.5 GHz carrier frequency is demonstrated as well. In the 480 Mbps experiment both the transmitter and receiver...
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