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We demonstrate a record-high electro-optic coefficient of r33 = 359 pm/V in a silicon-organic hybrid (SOH) modulator using the electro-optic chromophore JRD1. The π-voltage-length product amounts to UπL = 320 Vμm, enabling error-free 25 Gbit/s signaling at drive voltages of 180 mVpp.
We show coherent wireless transmission at carrier frequencies of 0.25 THz and 0.35 THz, relying exclusively on optoelectronic concepts for RF signal generation and coherent reception. In a proof-of-concept experiment, we demonstrate transmission of a BPSK signal at a symbol rate of 1 GBd.
We demonstrate ultra-fast high-precision distance measurements using a pair of dissipative Kerr-soliton frequency combs. We achieve sub-μm accuracy for static targets and measurement rates of 10 MHz that allow sampling of air-gun bullets on the fly.
We show coherent wireless transmission at carrier frequencies within 0.30+0.02 THz using up to 20 QPSK-modulated subcarriers with a symbol rate of 0.75 GBd each, leading to an aggregate line rate of 30 Gbit/s. We exploit optoelectronic techniques, both for THz generation and coherent reception.
Silicon-plasmonic photodetection based on internal photoemission exploits the intrinsic absorption in plasmonic waveguides at metal-dielectric interfaces. For this purpose we designed an asymmetric metal-semiconductor-metal waveguide with a width of 75 nm. Our plasmonic internal photoemission detector (PIPED) shows a rec-ord-high photocurrent sensitivity of up to S = 0.12 A / W for light at a wavelength...
We demonstrate an eight-channel hybrid multi-chip module comprising InP lasers, silicon photonic modulators, and parallel single-mode fibers, all connected via photonic wire bonds. We transmit 28 GBd PAM-4 signals at a total data rate of 448 Gbit/s over 2 km.
We demonstrate, for the first time with a DFB-MZM at 1550 nm, 100-GBd NRZ and PAM4 transmission over up to 1.2 km due to close-to-zero chirp. At 100-GBd PAM4, the DFB-MZM consumed only 0.85 pJ/bit.
We demonstrate coherent WDM transmission using a pair of quantum-dash mode-locked laser-diodes — one to generate a multitude of optical carriers, and another to generate a multitude of LO tones. We transmit a line rate of 4 Tbit/s (23×45 GBd PDM-QPSK) over 75 km.
We demonstrate coherent WDM transmission using a quantum-dash mode-locked laser diode with resonant feedback. We report a line rate of 12 Tbit/s (32QAM 60×20 GBd PDM) over 75 km SMF. The spectral efficiency is 7.5 bit/s/Hz.
We generate record-high line rates of 400 Gbit/s (100 GBd 16QAM) using a silicon-based IQ modulator. With a BER=1.9×10"2 we transmit a net data rate of 333 Gbit/s, the highest value for a semiconductor-based modulator.
We demonstrate compensation of fiber nonlinearities using repeated optical phase conjugation (OPC) in a WDM system with eight 32-Gbaud PDM 16-QAM channels, showing improved performance over a single mid-span OPC and no OPC.
We report on a fully integrated 16-channel polarization diversity fast slot-blocker with 100 GHz channel spacing using silicon photonics. We demonstrated extinction ratio of 20 dB and switching time of 10 ns timescale allowing add-drop operation as high as 320 Gbit/s PDM-32QAM signals.
We demonstrate an all-electronic digital-to-analog converter (DAC) with 100-GHz electrical bandwidth sampling at 240 GS/s, based on digital bandwidth interleaving. We test the DAC by generating up to 190-GBaud Nyquist shaped pulse amplitude modulated (PAM).
We demonstrate an all-electronically multiplexed, single optical carrier, flexible rate transmitter based on a high-speed 3-bit multiplexer and analog-to-digital converter integrated circuit. Line rates up to 1.08 Tb/s are obtained using 90 Gbd PDM-64QAM.
Recent progresses on monolithic SOI-based integration are presented for achieving high-performance slot-blocker for cost-sensitive metropolitan and datacenter networks. We review several nodes architectures for such optical slot switching ring networks. Such devices integrate up to 65 functional elements, allowing complex operations such as polarization and wavelength (de)multiplexing with sub-wavelength...
We demonstrate the first all-electronically time division multiplexed (ETDM) transponder with a line rate exceeding 1 Tb/s (90-GBd PDM-64-QAM), using a novel 3-bit multiplexing DAC IC.
We demonstrate polarisation-insensitive parametric amplification in highly nonlinear fibre of a 2.048-Tbit/s dense WDM PDM 16-QAM signal with ∼10 dB on-off gain and simultaneous wavelength conversion and phase conjugation, with mean Q2 penalties of only 0.6 dB and 0.4 dB.
We review high-speed experimental coherent transmission systems for bit rates from 400 Gb/s to 1.2 Tb/s, using high-speed electronic multiplexing to symbol rates from 72 GBd to 107 GBd.
We present experimental transmission results for a novel 6-core coupled-core fibre with 125 μm cladding diameter. We transmit combined 2-polarization, 6-SDM and 30-WDM channels over a distance of 1705 km, with a spectral-efficiency-distance product of 30690 bit/s/Hz km.
We present experimental results for mode-multiplexed WDM transmission over OM3 multimode fibres. We transmit 60 WDM channels and 3 spatial modes over a distance of 305 km. We use mode-selective photonic lanterns as mode couplers and for differential group delay compensation.
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