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We demonstrate multi-level optical weights embedded in a silicon photonic platform based on ferroelectric domain switching. Ferroelectric barium titanate integrated on silicon resonator structures is used as the memory material. By applying short voltage pulses of 100ns, we can switch fractions of the ferroelectric domains and thus change the transmission of the waveguides by more than one order of...
This paper reports recent progress beyond our initial report [1] in resonator fiber optic gyroscope (RFOG) development towards realization of a next generation compact device for commercial navigation applications by incorporation of silicon optical bench technology to miniaturize resonator and input optics. The resonator fiber optic gyro is being pursued because of its theoretical potential to meet...
PAM4 modulation is currently being implemented in high-speed wireline communication standards in order to increase bandwidth density. This paper presents a transmitter which utilizes a low-area silicon microring resonator modulator with two separate phase shifter segments to realize high-speed PAM4 modulation with an optical DAC approach. The optical DAC is designed with an optimized MSB/LSB segment...
Terahertz light-matter interactions within a semiconductor-filled waveguide can be tuned in space and time via photoexcited regions created on ultrafast time scales and sub-THz wavelength length scales by a patterned optical pulse. These light-induced metal-dielectric structures can be used to dynamically modify the photonic band structure of THz light within the waveguide, controlling the amplitude,...
Previous studies have shown Periodically Poled Lithium Niobate structures on Z-cut LiNbO3 could be used as acoustic transducers to generate acoustic waves. Investigations on Periodically Poled LiNbO3 (YXl)/128° transducers have been conducted. Simulations have pointed out interesting electromechanical coupling from such transducers. Fabrication of Periodically Poled (YXl)/128° LiNbO3 transducers bonded/thinned...
A two dimensional (2D) length-extensional mode quartz micro-resonator has been designed and patented by ONERA. Thanks to a specific decoupling, this resonator is expected to show a very high Quality factor×Frequency product (Q.f) near the theoretical limit of 3.1013. This design offers a range of frequencies between 1 MHz up to 10 MHz, thanks to homothetic geometries with thickness ranging from 210...
In this paper, we propose the mirror-symmetric Fano-like resonances which are generated by the interference between two resonant beam from through and drop ports of an add-drop microring resonator. While the path lengths of the two beams are different, small quasi-periodic spectral responses are nested in large periodic ones. The line shapes of the resonances are mirror images about the center wavelength...
An integrated photon pair source in the 1550-nm wavelength region is demonstrated. Spontaneous four-wave mixing is facilitated through a silicon-on-insulator micro-ring filter with 125-GHz spaced resonances. Coincidences in the pair emission are observed with a 95% visibility at spectral channels equidistant to the pump wavelength.
Stable and spectrally narrow laser sources referenced to ultrastable passive Fabry-Pérot cavities are invaluable for optical atomic clocks and they find important applications, e.g. in precision tests of relativity or novel radar applications. Ultimately the fractional frequency instability of the laser is limited by Brownian thermal noise of the cavity constituents.
In this work, we report the micro fabrication of several types of resonant micro magnetic field sensors where we can use an optical technique to read the magnetic variations (MOEMS). The fabrication process we have used, is a simple process in a SOI wafer with 6 μm of active layer and 5 μm of sacrificial SiO2.
Monolithically integrated light sources on silicon are key for future semiconductor microchips that comprise Si CMOS and on-chip optical interconnects as prerequisite for more energy efficient computers and data centres. Recently, major advances were achieved regarding direct integration of III-V gain material on silicon without introducing threading dislocations, especially via heteroepitaxy of semiconductor...
This paper presents a finite element analysis of die attach packaging stress effect on emerging nanomechanical silicon optical filters. The proposed silicon optical filter is composed of Si waveguides and a microring resonator having a few hundred nm in thickness and a few tens of μm in length. Photonic integrated circuit is typically implemented by attaching a new component to a common ceramic interposer...
In this paper we report progress toward a compact resonator fiber optic gyroscope (RFOG) design for commercial navigation applications. Specifically, we report the first use of silicon optical bench (SIOB) technology within the gyro to miniaturize optical component size. A low loss SIOB is used for optical resonator loop closure and a promising initial finesse of 35 is observed. The gyro angle random...
We describe a systematic study on quantifying the effects of heterostructure layer stacking upon measured dissipation and quality factors (Qs) of AlN-on-Si coupled-ring breathing mode micromechanical resonators. For the first time, we design and fabricate resonators of the same lateral dimensions but with different stacking layers, namely, Si, AlN-on-Si, and Al-on-AlN-on-Si. With both optical and...
This paper reports the first experimental exploration of non-invasive and fast manipulation of breast cancer cells by harnessing multimode micromechanical resonators operating in biosolution. We demonstrate, for the first time, that groups of breast cancer cells are spatially manipulated into controlled microscale patterns, facilitated by the spatially abundant and diverse multimode resonances of...
The integration of a photonic information processing system onto a single chip requires great research effort toward engineering metamaterials for miniaturization of the optical devices and circuits. We discuss nanoscale engineered optical nonlinearities for modulation and wave mixing of optical fields, and metal-dielectric-semiconductor nanostructures and compositions to construct nanoemitters for...
We experimentally demonstrate a silicon-on-insulator microring resonator filter that uses bent contradirectional couplers to eliminate the filter's free spectral range. The filter's measured side-mode suppression is greater than 15 dB, the extinction ratio is ∼19 dB, and the 3-dB bandwidth is ∼23 GHz.
An Otto chip device fabricated on silicon and sealed with a quartz window has recently been demonstrated as a potential alternative for the traditional Kretschmann based configuration for the development of surface plasmon resonance — SPR — sensors. We have fabricated open Otto chip structures as well and have characterized the surface plasmon resonance — SPR — effect at a wavelength of 975.1 nm....
Micron-scale disk resonators are explored to minituarize and enhance Ge-on-Si photodetectors. A 2.0 μm-radius detector exhibits a dark current of 11 nA, a responsitivity of 0.5 A/W and a 3-dB bandwidth of 17 GHz at −1V bias.
Using in-resonator photoconductive heaters to both sense and control the intra-cavity light intensity of microring resonators, automatic tuning of a silicon-on-insulator two-ring Vernier filter is demonstrated across the entire C-band.
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