Results 71 to 80 of about 24,147 (270)
Mechanisms of femtosecond laser-induced refractive index modification of poly(methyl methacrylate) [PDF]
, 2010 The mechanisms of refractive index change in poly(methyl methacrylate) by frequency doubled femtosecond laser pulses are investigated. It is demonstrated that positive refractive index modificaton can be caused by a combination of depolymerization and ...
Baum, Alexandra +4 more
core +1 more source
Increased Endurance of Nonvolatile Photonics Enabled by Nanostructured Phase‐Change Materials
Advanced Materials, EarlyView.Tapered and segmented islands of the phase‐change material (PCM) antimony selenide (Sb2Se3) integrated on silicon microring resonators enable ultra‐low‐loss, high‐endurance, non‐volatile photonic tuning. The nanostructured PCM design suppresses interfacial scattering and thermal stress, achieving record endurance over 100 million electrical switching ...
Jayita Dutta +10 more
wiley +1 more source
Comparative Study of Nano-Slot Silicon Waveguides Covered by Dye Doped and Undoped Polymer Cladding
Applied Sciences, 2018 Nonlinear optical dyes doped in optical polymer matrices are widely used for electro-optical devices. Linear optical properties change with dye concentration, which leads to a change in modal properties, especially in nano-structured integrated ...
Siegfried Bondarenko +2 more
doaj +1 more source
Sensors, 2020 Optical sensors, such as fiber Bragg gratings, offer advantages compared to other sensors in many technological fields due to their outstanding characteristics.
Jan Meyer +5 more
doaj +1 more source
Modeling of a polymer 1x3 MMI power splitter for optical backplane [PDF]
, 2005 A 0.4 dB excess loss, 0.01 dB output channel imbalance polymer 1 x 3 MMI power splitter is modeled having linearly tapered input section suitable for use in an optical backplane connector. The device design was additionally optimized using FD-BPM to have
Rashed, AM, Selviah, DR
core
Ultra-High Electro-Optic Activity Demonstrated in a Silicon-Organic Hybrid (SOH) Modulator
, 2018 Efficient electro-optic (EO) modulators crucially rely on advanced materials that exhibit strong electro-optic activity and that can be integrated into high-speed and efficient phase shifter structures.
Blaicher, Matthias +11 more
core +1 more source
Design of a tunable, room temperature, continuous-wave terahertz source and detector using silicon waveguides [PDF]
, 2008 We describe the design of a silicon-based source for radiation in the 0.5-14 THz regime. This new class of devices will permit continuously tunable, milliwatt scale, cw, room temperature operation, a substantial advance over currently available ...
Baehr-Jones, T. +3 more
core +1 more source
Advances in Halide Perovskites for Photon Radiation Detectors
Advanced Materials Technologies, EarlyView.This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang +3 more
wiley +1 more source
Competitive Evaluation of Planar Embedded Glass and Polymer Waveguides in Data Center Environments
Applied Sciences, 2017 Optical printed circuit board (OPCB) waveguide materials and fabrication methods have advanced considerably over the past 15 years, giving rise to two classes of embedded planar graded index waveguide based on polymer and glass.
Richard Pitwon +6 more
doaj +1 more source