Following the concept of $mathcal{PT}$-symmetric couplers, we propose a linearly coupled system of nonlinear waveguides, made of positive- and negative-index materials, which
GDSFactory has a function that enables users to find the supermodes in a directional coupler, given the gap and permittivity of the waveguide core and
All‐guided wave interferometers using [3×3] directional couplers as beam splitters are analyzed in detail. The characteristics of such interferometers are compared with those of
• Proposing an anti-reflection grating-assisted contra-directional coupler by simply increasing the corrugation width. • High suppression of intra-waveguide reflection in the grating
This paper focuses on the design, optimization, and characterizations of a low-loss, compact directional coupler-based duplexer.
Here, we experimentally demonstrate highly efficient transmission and reception of a terahertz slab-mode beam over a 3-dB bandwidth spanning a
The proposed 10-dB directional coupler and 3-dB directional coupler feature good energy confinement, ultra-compact, and low propagation loss, which has potential applications in photonic integrated
Ever get confused about the differences between directional, bi-directional and dual-directional couplers? Here''s everything you need to know
Directional couplers (DCs) have been playing an important role as a basic element for realizing power exchange. Previously most work was focused
Directional coupler is a basic function in an integrated photonic circuit, in which energy of the optical signal is coupled between adjacent optical waveguides.
The concept of optical switching utilizing directional couplers and the electro-optic effect has been leveraged to design various sequential circuits. By applying an appropriate voltage to the
We present the coupled mode theory for evanescent field coupling between modes of two waveguides placed close to each other in context to the most versatile coupled mode device, a two-waveguide
Abstract Ultracompact optical directional coupler is one of the key elements for nanoscale optical networks and highly integrated optical circuits. Although the transverse size has been reduced down
This chapter presents a detailed discussion of optical directional couplers, which is one of the important components of integrated quantum photonic circuits. Coupled mode theory is used to analyze two
A fiber directional coupler is defined as an optical component that splits and combines optical signals by utilizing the interference of evanescent waves from two closely positioned fibers, enabling power
Directional couplers # Directional couplers are two waveguides with a small gap between them that “couple,” or transfer, light from one waveguide to another.
The optical directional coupler, analogous to the microwave elementl of the same name, consists of paral lel channel optical waveguides sufficiently closely spaced that energy is transferred from one to
Nonlinear directional fiber couplers (NLDFCs) serve as a simplified model for analyzing MCFs'' nonlinear dynamics. The study explores the reduction of nonlinear phase noise due to linear
The coupling in a directional coupler (DC) has attracted lots of attention as a basic block for photonic integrated circuits. Most of previous work was focused on symmetric DCs consisting of
A directional coupler designed to split power equally between two ports is called a hybrid coupler. In designing directional couplers for practical bandwidths,
Power coupling is a fundamental operation in all electronic circuits. It involves the transfer of power between different. varying frequencies. The
Here, we present a simple nanophotonic directional coupler structure which can generate two meshing gears of angular momentum (AM) of light—optical gears. Due to the abrupt phase shift effect and
To address these challenges, we propose a novel direct measurement technique that offers greater robustness to variations in optical interfaces, while by-passing extinction ratio
We fabricated optical directional couplers with Si-wire waveguides and demonstrated their fundamental characteristics. Their coupling-length was extremely short, several micrometers, because of strong
Qualitative Description of the Operation of Directional Couplers Marcatili''s Improved Coupled-Mode Equations Directional Couplers with Uniform Cross Section and Constant Spacing
A directional coupler is defined as a device that couples only to waves traveling in a specific direction, allowing for the measurement of forward and reverse power levels in transmission
In this paper, a systematic study on some of the main design parameters of contra-directional couplers (CDCs) was performed. CDCs with different gaps and corrugation sizes were designed, simulated,
In this example, we will study the performance of an electrically tunable contra-directional coupler (CDC) using CHARGE (electrical simulation) and MODE
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