Results 21 to 30 of about 4,324 (259)
Nonlinear adiabatic optical isolator [PDF]
Applied Optics, 2017 We theoretically propose a method for optical isolation based on adiabatic nonlinear sum frequency generation in a chirped quasi-phase-matching crystal with strong absorption at the generated sum frequency wave. The method does not suffer from limitations of dynamic reciprocity found in other nonlinear optical isolation methods, and can provide tunable
Rangelov, Andon, Longhi, Stefano
openaire +3 more sources
Nanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms
Physical Review X, 2015 The realization of nanophotonic optical isolators with high optical isolation even at ultralow light levels and low optical losses is an open problem. Here, we employ the link between the local polarization of strongly confined light and its direction of
Clément Sayrin +7 more
doaj +1 more source
Efficient optical isolator via dual-Raman process with chiral nonlinearity
Results in Physics, 2023 A scheme for optical nonreciprocity is proposed via dual-mode Raman process in thermal atoms. We investigate a far-detuned nonlinear Raman process, with the assistance of the Doppler effect to achieve chiral optical nonlinearity.
Mingzhi Han +7 more
doaj +1 more source
Broadband optical isolator in fibre optics [PDF]
Journal of Optics, 2013 We propose a broadband optical diode, which is composed of one achromatic reciprocal quarter-wave plate and one non-reciprocal quarter-wave plate, both placed between two crossed polarizers. The presented design of achromatic wave plates relies on an adiabatic evolution of the Stokes vector, thus, the scheme is robust and efficient. The possible simple
Berent, Michal +2 more
openaire +2 more sources
Frontiers in Physics, 2020 A terahertz isolator is demonstrated for the THz nonreciprocal reflections in the magneto-optical microstructure composed of InSb and metasurface with a dielectric interlayer.
Yunyun Ji +7 more
doaj +1 more source
Hybrid integrated photonics using bulk acoustic resonators
Nature Communications, 2020 Here, the authors demonstrate acousto-optic modulation of silicon nitride microring resonators using high-overtone bulk acoustic wave resonances, allowing modulation in the GHz range via acoustic waves.
Hao Tian +6 more
doaj +1 more source
Nanophotonics, 2023 Free-space nonreciprocal transmission is a crucial aspect of modern optics devices. The implementation of nonreciprocal optical devices through optical nonlinearity has been demonstrated.
Chen Shiwen +5 more
doaj +1 more source
IEEE Photonics Journal, 2023 We propose and demonstrate a cost-effective half-duplex transceiver for Fiber-to-the-Room (FTTR) network by using a homemade uncooled and isolator-free distributed feedback (DFB) laser as both receiver (Rx) and transmitter (Tx). AlGaInAs multiple quantum
Hongqing Ding +6 more
doaj +1 more source
Silicon Waveguide Optical Isolator with Directly Bonded Magneto-Optical Garnet
Applied Sciences, 2019 Silicon waveguide optical isolators were fabricated by direct bonding of magneto-optical (MO) garnet. The technique allowed efficient MO phase shift owing to the use of single-crystalline garnet and negligibly thin interlayer on the silicon core layer. A
Yuya Shoji, Tetsuya Mizumoto
doaj +1 more source
The Role of Hematopoietic Cell Transplantation in Ataxia‐Telangiectasia
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Ataxia‐telangiectasia (A‐T) is a DNA repair disorder characterized by neurodegeneration, immunodeficiency, and cancer predisposition. Hematopoietic cell transplantation (HCT) is an established therapy in related disorders such as Fanconi anemia (FA) and Nijmegen breakage syndrome (NBS), but its role in A‐T is unclear.
Laila Alkhouli +3 more
wiley +1 more source