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Aurrion's heterogeneous integration process enables high performance active components such as lasers, modulators, and photodetectors to be elegantly integrated on a silicon photonics platform with high performance passive components.
Fast tuning of the Optical Angular Momentum (OAM) order of a vortex beam is demonstrated with 20µs switching times using a compact silicon photonic device.
A simple and robust technique to extract the complex optical conductivity of truly two-dimensional materials is developed. Applying the method to chemical-vapor-deposited graphene, we extract the complex conductivity, including Fermi level and scattering time.
On-chip electrical modulation of relative phase between pairs of optical vortices with opposite signs has been demonstrated, enabling useful functions in lab-on-chip, communications and sensing applications.
A drastic Q factor variation from 7900 to 1200 is observed in a silicon ring resonator loaded by micrometer-scale graphene with various lengths. The significant decay of the Q factor agrees with a numerical analysis.
We present the fabrication and characterization of a graphene stack that can function as the darkest material and serve as the basis for a new class of sensitive, high-speed photodetectors.
We present a 20 Gb/s monolithically integrated transmitter with stacked CMOS driver and periodic-loaded PN-junction Mach-Zehnder modulator fabricated in IBM's sub-100nm technology node. Transmitter extinction ratios of 10 dB at 20 Gb/s are demonstrated.
We demonstrate an ultralow-power, low-dispersion and compact silicon-organic-hybrid photonic crystal waveguide modulator. RF power consumption of 1.5nW, effective in-device r33 of 1190pm/V and Vπ×L of 0.291±0.006V×mm over 8nm optical bandwidth are demonstrated.
25 Gbps operation was obtained with extinction ratios of 2 – 4 dB for Vpp = 1.00 – 1.75 V in MZI modulator consisting of 200-µm photonic crystal slow light waveguide phase shifters.
A novel ultra-broad bandwidth ultrasound detector is demonstrated using imprinted polymer microring, with flat frequency response up to ∼350 MHz at −3dB. A record high sub-3µm axial resolution in ultrasound/photoacoustic imaging applications is demonstrated.
Thin film Ge1−xSnx photodetectors fabricated on Si using a CMOS compatible process had responsivities at 1.55 µm of 6.59, 1.49, 2.63, and 0.84 mA/W for 0.9, 2.57, 3.2, and 7.0 % Sn. Spectral response for a Ge0.93Sn0.07 photodetector had extended infrared response out to 2.2 µm.
The near-field tip-antenna enhanced signal transduction with femtosecond laser pulses allows for spatio-spectral and spatio-temporal imaging and quantum coherent control with the perspective to reach the single electronic or vibrational quantum level.
A new type of “black silicon” materials with high optical absorptance and annealing-insensitivity is designed and fabricated by femtosecond laser pulses. These results have important implications for the fabrication of highly efficient optoelectronic devices.
The optical low-coherence interferometry built with an optical ruler was proposed to demonstrate silicon-wire transverse-magnetic polarized indices of refraction and birefringence as 2.02 and 0.64, respectively, from the microring resonator effective length using various interferograms.
Single pass gain of 77mm crystal and ceramic Yb:YAG disks are compared in the 100–200K temperature range. Experiments are performed on a laser amplifier cooled through a static low pressure helium gas cell.
We demonstrate high gain producing 60 mJ, 200 ps pulses at 200 Hz from a single 4-mm ASE limited gain-cell. A scaling paradigm utilizing a monolithic array of gain cells is proposed.
We report photonic radio-frequency arbitrary waveform generation in the W-band, enabled through optical pulse shaping and a near-ballistic uni-traveling-carrier photodiode. Example waveforms spanning 75–110GHz with long time apertures are generated and measured after wireless propagation.
We report a technique to simultaneously optimize the peak rejection and the resolution of a radiofrequency photonic notch filter based on a silicon nitride ring resonator.
We demonstrate the coherent combination of two solid-core fibers, which are used for nonlinear spectral broadening followed by temporal recompression. 320 fs input pulses coming from a fiber CPA system are split up and independently broadened in the two spatially separated fibers, hence, limitations of individual fibers are lifted. After recombination and compression, sub-30fs pulses were achieved...
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