Results 81 to 90 of about 383,407 (335)

All-optical switching of photonic entanglement

open access: yes, 2011
Future quantum optical networks will require the ability to route entangled photons at high speeds, with minimal loss and added in-band noise, and---most importantly---without disturbing the photons' quantum state.
Altepeter J B   +5 more
core   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

open access: yesFEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke   +4 more
wiley   +1 more source

Low-loss and broadband 1 × 8 thermo-optic selective switch using bent directional couplers

open access: yesResults in Optics
Low-loss and broadband optical switches are essential components for all optical networks. In this paper, we experimentally demonstrate a 1 × 8 thermo-optic switch that exhibits broadband property with the worst crosstalk of −17.20 dB and the maximum ...
Cheng Ji   +5 more
doaj   +1 more source

Performance-Improved Broadcast-and-Select Optical Switch Module Based on EAM-Gate Array

open access: yesIEEE Photonics Journal, 2016
Performance improvement of a broadcast-and-select (B&S) optical switch based on an electro-absorption modulator (EAM)-gate array is presented.
Y. Muranaka   +4 more
doaj   +1 more source

Derivation and characterization of retinal pigment epithelium from urine‐derived iPSCs

open access: yesFEBS Open Bio, EarlyView.
Age‐related macular degeneration causes vision loss via RPE dysfunction and loss. Traditional iPSC therapies rely on invasive biopsies, limiting scalability. Here, we utilize urine‐derived stem cells as an accessible source to generate u‐iPSCs, successfully differentiated into pigmented RPE. This “Urine‐to‐Retina” platform provides a promising path for
Daniella Beiner   +7 more
wiley   +1 more source

Wavelength- and Time-Selective Reconfigurable Optical Add/Drop Multiplexer Using Time-Frequency Domain Processing

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
We propose and demonstrate a wavelength- and time-selective reconfigurable optical add/drop multiplexer (ROADM) using time-frequency domain processing.
Tsuyoshi Konishi   +2 more
doaj   +1 more source

Multiple Access Techniques for Bipolar Optical Code Division in Wireless Optical Communications

open access: yesIEEE Access, 2020
In this paper, multiple access techniques for bipolar optical code division are proposed for application in wireless optical communications. First, several fiber Bragg gratings (FBGs) and optical circulators are used to encode optical signals.
Hsu-Chih Cheng   +4 more
doaj   +1 more source

Dual cathode system for electron beam instruments [PDF]

open access: yes, 1989
An electron beam source having a single electron optical axis is provided with two coplanar cathodes equally spaced on opposite sides from the electron optical axis.
Bradley, James G.   +2 more
core   +1 more source

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

open access: yesFEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee   +3 more
wiley   +1 more source

2×2 Microfluidic Optical Switch with Ferromagnetic Fluid Drive

open access: yesGuangtongxin yanjiu
【Objective】Common optical switches are usually polarization sensitive or have complex structures, the article proposes a 2×2 microfluidic optical switch.【Methods】The optical switch proposed in this article employs a waveguide structure.
SHI Zheng   +4 more
doaj  

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