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The W-band signal near the antenna surface is detected using a THz probing system, by assuming near/far electric field distribution measurement on a phased array antenna coupled to an RoF radar system. By using 10 GHz + 12.5 kHz optical sampling pulse with a ZnTe EO probing head, the 80-GHz signal generated by a UTC-PD could be successfully detected as a down-converted signal of 100 kHz. It suggests...
A wavelength-division multiplexing/time-division multiplexing (WDM/TDM) network exploiting the broad wavelength range of T-band (1000–1260 nm) is proposed. The network is based on different wavebands of downlink and uplink channels, with each transmitter consisting of a wavelength tunable laser utilized for more than one user through wavelength tuning. The downlink section of the network also introduces...
High-speed optical data signal generation of >6.8 Gb/s with an error-free operation was successfully demonstrated using newly developed monolithically integrated quantum dot optical modulator and semiconductor optical amplifier operated in an ultra-broad optical frequency bandwidth.
A monolithically integrated quantum-dot (QD) optical gain modulator with semiconductor optical amplifier was developed for successful demonstration of error-free Gb/s-order high-speed, 10-km-long transmissions using 1.3-µm multiple wavelength channels from a QD comb laser.
Error-free Gbps-order high-speed optical data signal generation in a > 5.5-THz ultra-broad optical frequency bandwidth of the O-band was successfully demonstrated using a newly developed quantum dot electro-optic modulator integrated with a semiconductor optical amplifier.
An O-band multiple-wavelength light source with 100-GHz channel spacing was successfully demonstrated for the WDM light source using a single quantum dot optical frequency comb laser with an interference injection locking technique.
Simultaneous triple-waveband, 10-Gbps error-free photonic transport with clear eye-openings are demonstrated in the 1-μm, C-, and L-wavebands by using an ultra-broadband photonic transport system comprising a single and long holey fiber transmission line.
Simultaneous 3 × 10-Gbps error-free photonic transmissions with clear eye-openings are demonstrated in the 1-μm, C-, and L-wavebands by using an ultrabroad-waveband photonic transport system comprising a 3.3-km-long holey fiber transmission line.
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