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By combing ultra-fast photonic-transmitter-mixers and envelop detectors with record-high modulation (26 GHz) and video bandwidths (37 GHz), respectively, error-free on-off-keying wireless transmission at W-band with data rate as high as 25 Gbit/sec can be achieved.
By scaling down the collector layer thickness and active area of near-ballistic uni-traveling carrier photodiodes, we achieve a wide optical-to-electrical bandwidth (270 GHz) with a high saturation current (17mA) under a 50 Ω load and −2V bias.
Photonic transmitter-mixers with ultra-wide O-E/modulation bandwidths excited by remote-distributed pulse trains for 20Gbps error-free wireless transmission is presented. The S/N ratios and output power are greater than sinusoidal excitation.
We demonstrate two high-performance photonic-transmitters based on uni-traveling-carrier-photodiode (UTC-PD) and separated-transport-recombination-photodiode (STR-PD). Thanks to recombination center, STR-PD exhibits comparable maximum-peak-power and electrical pulse-width with much smaller photocurrents and less serious device-heating to those of UTC-PD.
In this paper we reviewed our recent work about InP based high-speed and high-power photodiodes with evanescently-coupled and vertical-illuminated structures and their application to W or V-band microwave photonic.
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