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We experimentally demonstrate and evaluate the performance of analog signal transmission system with photonic integrated optical vortex emitter and 3.6 km few-mode fiber (FMF) link using OAM2 and OAM-2 modes and measured the spurious free dynamic range (SFDR) of the second-order harmonic distortion (SHD).
Depletion region of uni-traveling-carrier photodiodes (UTC-PDs) is optimized. Wide bandwidth of 28.5 GHz and high saturation photocurrent of 38 mA at 20 GHz are achieved for a 14-µm diameter device.
Microresonators with a high Kerr nonlinearity show great potential to generate optical frequency combs with ultrabroad spectra, high repetition rate, and high coherence between comb lines. The compact size and possibility of chip-level integration make the Kerr combs attractive for many applications, especially including photonic radiofrequency (RF) filters. In this paper we report the first demonstration...
We demonstrate thermo-optically tunable multiple-channel micro-ring resonators as an ultra-compact on-chip spectral shaper, and tunable multiple-ring all-pass filters as variable delay lines for photonic radio-frequency waveform generation. High quality radio-frequency pulsed signals were achieved.
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