This theoretical modeling and simulation paper presents designs projected performance of non-volatile broadband on-chip 1 × 2 electro-optical switches operating in the telecommunication C-band based on silicon-on-insulator technological platform. These optical consist an asymmetric two-waveguide directional coupler a symmetric three-waveguide coupler, which phase change material Ge <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> Sb Se...

Guided-wave optical biosensors are reviewed in this paper. Advantages related to technologies presented and integrated architectures investigated detail. Main classes of bio receptors the most attractive transduction mechanisms discussed. The possibility use Mach-Zehnder Young interferometers, microdisk microring resonators, surface plasmon resonance, hollow antiresonant waveguides, Bragg gratings realize very sensitive selective, ultra-compact fast is Finally, CMOS-compatible proved be for...

A very compact (device area around 40 μm²) optical ammonia sensor based on amicroring resonator is presented in this work. Silicon-on-insulator technology used insensor design and a dye doped polymer adopted as sensing material. The exhibitsa good linearity minimum detectable refractive index shift of materialas low 8x10

This theoretical modeling and simulation paper presents designs projected performances of two non-volatile, broadband, on-chip 2 × electro-optical switches based upon the germanium-on-insulator (GeOI) photonic-electronic platform operating at 2.5 µm mid-infrared wavelength. These compact devices facilitate large-scale integration on a "monolithic wafer" where all components are made group-IV semiconductors. The two-waveguide directional coupler (DC) Mach-Zehnder interferometer (MZI). A...

Optical gyroscopes measure the angular velocity using Sagnac effect. However, resonance splitting due to effect is directly proportional linear dimensions of device. Consequently, integrated optical are still subject research. We propose idea and design an anti-parity-time (APT)-symmetric gyroscope exhibiting a independent from With 80 μm×40 μm footprint device, we demonstrated that it possible achieve 106 times higher than one obtained through classical respect previously proposed...

Transferring energy without transferring mass is a powerful paradigm to address the challenges faced when access to, or deployment of, infrastructure for conversion locally impossible impractical. Laser beaming holds promise of effectively implementing this paradigm. With perspective, work evaluates optical-to-electrical power that created collimated laser beam illuminates silicon photovoltaic solar cell located kilometers away from laser. The CW high-energy Yb-doped fiber emitting at center...

Nowadays, photonic sensors represent an efficient and intriguing solution for advanced chemical biochemical sensing in liquid gas. In this article, a detailed investigation of based on resonant microcavities is presented. Photonic device architectures, optical principles, technologies materials are presented, emphasizing their role mechanisms. conclusion, interesting experimental results reviewed order to show the main applications several fields, such as medicine, chemistry biotechnology, name few.

We proposed a new readout scheme for an ultrasensitive gyroscope, which uses the physics of exceptional points PT-symmetric system to enhance device sensitivity. In particular, we demonstrated that full-width at half-maximum linewidth (Δω <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">FWHM</sub> ) light exiting ring resonator is proportional square root rotation rate (Ω). Moreover, designed kept point (at rest) with two 100-μm-radius rings,...

In this paper, we report, for the first time to our knowledge, modeling and design of a miniaturized integrated optical sensor, based on multiple quantum-well (MQW) microring laser, be used in gyroscope systems. The device can fully single chip either low (e.g., vehicles land transport) or high ships, airplanes, spaceborne platforms) sensitivity navigation model includes influence some physical effects, such as quantum noise, lock in, thermal effect, sidewall roughness-induced losses. Very...

A submicrometer integrated optical sensor based on Bragg gratings in silicon-on-insulator technology is theoretically proposed this paper. The grating analysis performed using a mixed numerical approach the finite-element method and coupled mode theory. possibility to use third-order instead of first-order discussed performances compared, thus overcoming fabrication problems associated scale features. detection limit approximately 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

In this paper we theoretically investigate a ring resonant cavity obtained by closing on itself π-shifted fiber Bragg grating, to be used for refractive index sensing applications. Differently from conventional the spectral structure of is characterized an asymmetric splitting doublet composed right side resonance having Fano profile and left symmetric Lorentzian profile. The shows narrower sharper peak than all other kinds achievable with both resonators gratings. A reduction linewidth...

In this paper, we report on theoretical investigation of split mode resonant sensors based fiber Bragg grating (FBG) ring resonators and π-shifted (π-FBG) resonators. By using a resonator (π-FBGRR) instead conventional (FBGRR), the symmetric antisymmetric resonance branches (i.e., eigen-modes perturbed system) show peculiar very important features that can be exploited to improve performance optic spectroscopic sensors. particular, π-FBGRR branch taylored have maximum splitting sensitivity...

In this paper, a spectroscopic sensor formed by silicon-on-insulator waveguiding Bragg grating ring resonator working in linear and non-linear regime is proposed. regime, the device shows spectral response characterized photonic band gap (PBG). Very close to edges, resonant structure exhibits split modes having splitting magnitude equal PBG extension, whose characteristics can be exploited obtain RI optical almost insensitive fabrication tolerances environmental perturbations. When operates...

This theoretical modeling and simulation paper presents design projected performance of an on-chip thermo-optical multi Sagnac loop Mach-Zehnder interferometer (MZI), operating at C-band 3300 nm for silicon-on-insulator germanium-on-silicon technological platforms, respectively. The MZI arms are comprised N-cascaded connection reflectors, each pair separated by a waveguide whose length is designed according to the wavelength-channel spacing requirements. N chosen Butterworth filter technique...

Abstract In this paper we present a physical discussion of the indirect two-photon absorption (TPA) occuring in silicon carbide with either cubic or wurtzite structure. Phonon-electron interaction is analyzed by finding phonon features involved process as depending upon crystal symmetry. Consistent assumptions about phonon-electron scattering mechanisms are proposed order to give mathematical formulation predict wavelength dispersion TPA and Kerr nonlinear refractive index n 2 . The spectrum...

Non-Hermitian photonics has attracted increasing attention especially for sensing applications. Two coupled optical systems, designed to work at the "exceptional point", exhibit a strong spectral response perturbations. Due enhanced sensitivity of exceptional points, they have been usually suggested as perfect candidates high resolution sensing. The drawback these configurations is their undesired also external fluctuations and noise that could eliminate advantages points. Recently, concept...

An accurate design of an innovative fiber optic temperature sensor is developed. The based on a cascade three microstructured optical fibers (MOFs). In the first one suitable long period gratings designed into core. A single mode intermediate and rare-earth activated Fabry-Perot cavity are other two MOF sections. exhaustive theoretic feasibility investigation performed employing computer code. complete set-up for monitoring can be obtained by utilizing only low cost pump diode laser at 980...

Using the strip-guided "manufacturable" SOI/GeSn group-IV integrated-photonics platform operating at 1550 nm, we propose an optical-to-electrical-to-optical (O-E-O) device that can work either as amplifierless optical repeater with gain, a linear-optics wavelength-converter repeater, or new "optical–optical" logic (OOL) gate. An interconnected array of such gates performs complicated digital-logic functions. The OEO comprises photodetector (PD), electro-optical modulator (EOM), and...