Abstract Directional couplers are essential components in integrated photonics. Given their widespread use, accurate characterization of directional couplers is crucial for ensuring optimal
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In this tutorial, we''ll uncover the benefits of creating a parametric model for directional couplers, leveraging the advanced layout and model-building
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We investigate the light propagation in a double-waveguide coupler with imaginary-valued coupling coefficient. The imaginary coupling is realized by incorporating an additional
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Such a directional coupler that allows the transfer of light from one channe 1 to another is one of the building blocks of optical integrated circuits. We shall describe below the first operation of such a
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In the field of integrated optics directional couplers will play an important role. These couplers are not only important for providing just a direction dependent means of coupling but they are also important
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In this paper, a novel optical directional coupler based on SPPs is proposed, and the finite difference time domain (FDTD) method is used to simulate and analyze its new optical properties.
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Directional couplers are fundamental components for optical modulators and switches. The first SiGe/Si directional coupler was reported by Mayer et al. (1991). The coupler consisted of two adjacent Ge 0.4
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An optical directional coupler is one of the most basic inline fiber-optic components, often used to split and combine optical signals, or tap-off a small portion of the optical power for monitoring.
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The Silicon-on-Insulator (SOI) based platform overcomes limitations of the previous copper and fiber based technologies. Due to its high index difference, SOI waveguide (WG) and directional
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Directional couplers consist of closely neighboring waveguides, between which energy exchange can take place. Directional couplers can be applied to power splitting, to modulation or to the switching of
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We describe the operation, design, and fabrication of MEMS-tunable silicon-photonics directional couplers, with potential for smaller footprint, less sensitivity to fabrication errors, and
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We show analytically that two coupled planar waveguides exhibit a maximum in the coupling strength, which ensures both wideband transmission and minimal device
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Electro-optic (EO) mechanisms have been used to achieve a fast and active (power) switching in directional couplers as first demonstrated in lithium niobate (LiNbO 3) waveguides by
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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
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This is a continuation from the previous tutorial - grating waveguide couplers. Directional couplers are multiple-waveguide couplers used for codirectional
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The design of an all-optical 3-dB and 10-dB directional coupler that functions as an optical switch if applied a control signal by fusing two photonic crystal waveguides with a coupling
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Abstract 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
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A directional coupler serves as an essential passive component in integrated photonic systems, allowing precise splitting or combining of optical signals
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Optical couplers are one of the most important classes of integrated optical components. These devices are used in directional routing of a light signal from one waveguide to another or in
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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
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Compact integrated optical directional couplers with symmetrically- and asymmetrically etched S-bend waveguides on SOI platform have been designed,
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In this paper, we have proposed, analyzed, and verified the performance of an optimized plasmonic 10-dB directional coupler and a 3-dB directional coupler in 2-D plasmonic waveguides
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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
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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
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Optical neural networks are emerging as structures with potential for artificial intelligence. We describe a multi-port directional coupler architecture and dem.
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This paper focuses on the design, optimization, and characterizations of a low-loss, compact directional coupler-based duplexer.
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