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We discuss the polarization properties and first-order diffraction efficiencies of volume phase holographic (VPH) transmission gratings, which can be exploited to improve the throughput of modern spectrographs. The wavelength of peak…

Astrophysics · Physics 2011-03-10 I. K. Baldry , J. Bland-Hawthorn , J. G. Robertson

On-chip high extinction ratio Mach-Zehnder interferometers (MZI) have always attracted interest from researchers as it can be used in many applications in astrophotonics, optical switching, programmable photonic circuits, and quantum…

Optics · Physics 2022-07-26 Shengjie Xie , Sylvain Veilleux , Mario Dagenais

Due to that the polarization states in optical fibers change randomly during transmission, polarization-independent (PID) devices are demanded to receive lights with arbitrary polarization states. Compared with their orthogonal polarization…

Optics · Physics 2023-12-12 Yating Wu , Xiaoyan Liu , Tao Chu

The capability to detect the polarization state of light is crucial in many day-life applications and scientific disciplines. Novel anisotropic two-dimensional materials such as TiS3 combine polarization sensitivity, given by the in-plane…

We describe a macroscopic beam splitter for polar neutral molecules. A complex electrode structure is required for the beam splitter which would be very difficult to produce with traditional manufacturing methods. Instead, we make use of a…

Chemical Physics · Physics 2017-05-03 Sean D. S. Gordon , Andreas Osterwalder

Recent advances in photonic integrated circuits (PICs) have enabled a new generation of "programmable many-mode interferometers" (PMMIs) realized by cascaded Mach Zehnder Interferometers (MZIs) capable of universal linear-optical…

We present a beam splitter in a suspended, ballistic, multiterminal, bilayer graphene device. By using local bottomgates, a p-n interface tilted with respect to the current direction can be formed. We show that the p-n interface acts as a…

Mesoscale and Nanoscale Physics · Physics 2015-12-24 Peter Rickhaus , Péter Makk , Ming-Hao Liu , Klaus Richter , Christian Schönenberger

Managing insertion losses, polarizations and device footprint is crucial in developing large-scale photonic integrated circuits (PICs). This paper presents a solution to these critical challenges by designing a semiconductor optical…

This letter proposes a 50:50 TE terahertz (THz) power splitter based on digitized metamaterials. The device is optimized using particle swarm optimization algorithm. The structure of the digitized metamaterials contains circular air holes…

Optics · Physics 2021-04-16 Kiyanoush Goudarzi , Haewook Han

We designed Si-based all-dielectric 1 $\times$ 2 TE and TM power splitters with various splitting ratios and simulated them using the inverse design of adjoint and numerical 3D finite-difference time-domain methods. The proposed devices…

Optics · Physics 2021-04-16 K. Goudarzi , S. Kim , I. Park , H. Han

We realize quantum gates for path qubits with a high-speed, polarization-independent and tunable beam splitter. Two electro-optical modulators act in a Mach-Zehnder interferometer as high-speed phase shifters and rapidly tune its splitting…

Quantum Physics · Physics 2015-05-30 Xiao-song Ma , Stefan Zotter , Nuray Tetik , Angie Qarry , Thomas Jennewein , Anton Zeilinger

Active photonic integrated circuits (PICs) in the visible spectrum are essential for on-chip applications, requiring low-loss waveguides with broad transparency and efficient, low-power phase modulation. Here, we demonstrate a compact,…

The Hefei Advanced Light Facility (HALF) will be a VUV and soft X-ray diffraction-limited storage ring (DLSR), and its high density of electron bunches makes the intra-beam scattering (IBS) effect very serious. In this paper, an IBS module…

Accelerator Physics · Physics 2023-11-28 C. W. Luo , P. H. Yang , G. W. Liu , W. W. Li , N. Hu , W. M. Li , Z. H. Bai , L. Wang

In this paper, we introduce a new approach to fabricate under the Silicon on Insulator (SOI) platform a 1x2 power splitter and scale it to 1xN system device from the proposed model. The current strategy of design is based on the well-known…

Optics · Physics 2024-03-01 R. Peyton , J. Martinez Valdivieso , D. Presti , G. A. Torchia

We propose a new class of photonic devices based on periodic stress fields in silicon that enable second-order nonlinearity as well as quasi-phase matching. Periodically-poled silicon (PePSi) adds the periodic poling capability to silicon…

Optics · Physics 2009-11-13 Nick K. Hon , Kevin K. Tsia , Daniel R. Solli , Bahram Jalali

Squeezing light into subwavelength dimensions is vital for on-chip integration of photonic technologies. One approach to overcome the diffraction limit is coupling light to material excitations, leading to polariton states. Here, we…

Photonic technologies offer promising solutions to the power consumption, bandwidth constraints and latency limits of electronic hardware used in high-performance computing and artificial intelligence. Recently, many studies have proposed…

In this Letter, a linear scheme to generate polarization entanglement at 1.5 um based on commercial polarization maintained dispersion shifted fiber (PM-DSF) is proposed. The birefringent walk-off effect of the pulsed pump light in the…

Quantum Physics · Physics 2012-04-11 Qiang Zhou , Wei Zhang , Pengxiang Wang , Yidong Huang , Jiangde Peng

An ultra-broadband transverse magnetic (TM) pass hyperuniform disordered photonic crystal (HUDPC) polarizer is proposed and demonstrated on a silicon-on-insulator platform. Propagation of the transverse electric mode is blocked by three…

Optics · Physics 2019-08-13 Wen Zhou , Yeyu Tong , Xiankai Sun , Hon Ki Tsang

The modal dispersion of waveguides often limits integrated photonic devices to operation with a single polarization state. This presents a challenge for sensing and spectroscopy applications, which often require polarization diversity over…