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We focus on the use of the subwavelength crossed Ag grating top layer in the Ag/SiO2/Ag sandwich nanostructures as the ultrathin plasmonic super absorbers to efficiently enhance the light absorption by surface plasmon resonacne.
Single-mode lasing from broad area radial Bragg lasers is demonstrated experimentally. Numerical analysis as well as experimental characterization reveals surprising property of high mode discrimination at large angular modal numbers.
A review is presented on how diagnostic studies, technological and design improvements and novel device configurations have enabled a more than fourfold improvement in lateral brightness in high power diode lasers, which demonstrate > 4W/mm-mrad.
We fabricate and characterize low kappa gratings on an ultra-low loss Si3N4 waveguide for narrow linewidth laser reflectors. DUV lithography is used to demonstrate kappa as low as 0.23 cm−1 with 12 dB of SMSR.
We demonstrate an ultra compact integrated Silicon receiver for DQPSK signals made by two tunable microring resonators and four Germanium photodetectors. We report device characterization and operation for signals ranging from 10 to 20 Gbaud.
This paper introduces a novel concept for fabrication of subwavelength grating based beam shaping elements. The optical nano-hair structures are made from high-κ dielectrics using nano-patterning techniques and an atomic layer deposition tool.
The existence and stability of moving gap solitons in coupled Bragg gratings with cubic-quintic nonlinearity are investigated. The effect of quintic nonlinearity and velocity of soliton on the stability of gap solitons are analyzed.
We have numerically demonstrated the significant impacts on the resonance mode characteristics of subwavelength grating structures due to tapered sidewall profile and high aspect ratio, which is normally obtained from CMOS-compatible nanoelectronic fabrication processes.
Optical clock distribution networks in silicon photonics are experimentally investigated. An electrical pulse train with 9.8 fs jitter is generated using a waveguide-integrated Ge photodiode. Skew of < 100 fs is measured for delay lines up to 75 ps.
We propose a novel configuration to implement bandwidth-tunable add-drop filters using integrated contra directional grating assisted couplers with a bandwidth tunable from 8 nm to 16 nm. Measurement results of passive structures are presented and the tuning method is analyzed.
We demonstrate a simple and robust method for stabilizing the carrier-envelope phase of a high-energy Ti:Sapphire laser operating at 10 Hz, with 400 mJ pulse energy, 25 fs duration (16 TW).
A sol-gel based imprint lithography process has been developed to fabricate guided-mode resonance (GMR) structures. The inexpensive process offers a rapid means to create sub-micron grating waveguide structures over large surface areas. Both one-dimensional and two-dimensional GMR devices have been successfully fabricated and characterized.
Pulse contrast measurements at the SG-II upgrade Petawatt (PW) laser beamline showed its capability to deliver pulses with 106 temporal contrast. By shaping of seeding pulse in spectral domain, amplified chirped pulses with a spectral width of 6nm have been realized, which means chirped pulses could be compressed to a pulse duration below 500fs or shorter.
We demonstrate efficient photonic devices that rely on sub-100nm features in unmodified 45nm SOI CMOS, including photonic crystals, array-antenna grating couplers, and modulators. We then show monolithically integrated electronic-photonic systems comprising millions of transistors and thousands of photonic devices, including a complete chip-to-chip photonic link.
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