Thin films of mixtures of asymmetric poly(styrene-block-methyl methacrylate) (PS-b-PMMA) diblock copolymers and PMMA homopolymers with cylindrical PMMA microdomains oriented normal to the substrate surface were used to couple optical modes in the Kretschmann configuration, and their optical properties were investigated by optical waveguide spectroscopy (OWS). The nanopore formation in the block...

We have proposed and demonstrated a polarization splitter based on an ARROW-B type waveguide. This device has an asymmetric Y-branch configuration, connecting a waveguide with a large modal birefringence to a low-birefringent waveguide which is channeled by the stripe lateral confinement structure. The device can achieve a high extinction ratio without precise mask alignment, since these two wa...

Nowadays layered photonic structures (LPSs) are key of optoelectronic and microwave devices such as, phased-array antennas, microcavities and mirrors [1,2], filters of xWDM systems [3], waveguide structures, photodetectors, sensors and others. In case of active devices the layered structures are usually used in form of superlattices [4-6], multiple quantum wells [7,8] and asymmetric multiple qu...

Scaling the throughput through a multimode waveguide is experimentally demonstrated by extending operation from 2 to 3 spatial modes. The asymmetric, y-junction device is shown to support transmission of an aggregate bandwidth of 3x10-Gb/s data. OCIS codes: 230.7370, 060.4230, 200.4650.

We study nonlinear modes of dual-core photonic crystal fiber couplers made of a material with the focusing Kerr nonlinearity. We find numerically the profiles of symmetric, antisymmetric, and asymmetric nonlinear modes and analyze all-optical switching generated by the instability of the symmetric mode. We also describe elliptic spatial solitons controlled by the waveguide boundaries.

We reports operating condition of a modified architecture of all-optical wavelength-selective switch controlled by a single light. Switching characteristics in a proposed circuit are analyzed with regard to their phase dependence. Keywordsoptical switch; asymmetric X-junction coupler; Raman amplifier; wavelength-selective; Integrated optics; Optical waveguide; Wide wavelength range

In this work, a first report on fabricating an asymmetric Bragg coupler-based filter on polymeric waveguides without input-waveguide grating was revealed. The fabrication process we developed was using holographic interference techniques, capillary effect, soft lithography, and micro molding process. The transmission dip of about -9.2 dB and the 3 dB transmission bandwidth of about 0.125 nm wer...

We analyse the entanglement properties of deterministic path-entangled photonic states generated by coupling emission a quantum-dot biexciton cascade to chiral nanophotonic waveguide, as implemented {\O}stfeldt et al. [PRX Quantum 3, 020363 (2022)]. model degree through concurrence two-photon entangled state in presence realistic experimental imperfections. The accounts for imperfect emitter-ph...

This Letter presents the experimental characterization of nonreciprocal elastic wave transmission in a single-mode elastic waveguide. This asymmetric system is obtained by coupling a selection layer with a conversion layer: the selection component is provided by a phononic crystal, while the conversion is achieved by a nonlinear self-demodulation effect in a 3D unconsolidated granular medium. A...

Resonant reflection of light by a waveguide grating provides simultaneous spectral and spatial filtering of the reflected beam. Narrowband transmission filter based on a plasmon resonance shows high out-of-band suppression in a wide spectral range. Dielectric waveguide grating mirror improves spatial coherence of a semiconductor laser. OCIS codes: (050.1950) Diffraction gratings; (130.2790) Gui...