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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
Directional couplers are also used in the design of Mach-Zehnder interferometers for applications in optical switching and demultiplexing . Directional couplers based on microring resonators
We present measurements of biomolecular binding reactions, using a new type of integrated-optical biosensor based on a planar directional coupler structure. The device is fabricated by Ag 1 -Na 1 ion
Coupling Between Waveguides The phenomenon of optical tunneling can be used not only to couple energy from a fiber or a beam to a waveguide, as described in Chapter 7, but also to couple one
A plasmonic 10-dB directional coupler and a 3-dB directional coupler are based on the metal-insulator-metal (MIM) slab waveguide and analyzed at
We want our directional coupler to be both fabrication tolerant, and broadband, i.e., it has a constant coupling strength over a wide wavelength range. For that, we make the directional coupler
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
We examine the use of foundry process optical waveguide couplers in making 1 × 2 optical switches. The concept involves a post-foundry process to provide a moveable dielectric load
In this work, we identify and analyze stationary geometrical dimensions of directional couplers that enhance tolerance to such variations. Through theoretical predictions and experimental
Abstract and Figures A microprocessor controlled system for fabrication of 2 x 2 flame-fused biconical single-mode fiber directional couplers
Abstract 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
In a directional coupler formed by two closely placed optical waveguides with mutual energy coupling [ Fig. 8 (a)], the coupling strength can be changed by varying
Optical directional couplers (ODCs) consist of two or more closely-located optical waveguides, whose modes can couple evanescently and thereby exchange their powers, realizing,
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
semiconductor . Furthermore, the directional couplers are of the technological interest since they are currently a topic of major interest in integrated optics for ultra-high-speed optical signal processing
When designing a directional coupler, the length and gap must be chosen to produce the desired power splitting ratio at the output. Directional couplers are also
Several optical passive components, including directional couplers (DC), Mach–Zehnder interferometers (MZI), arrayed waveguide gratings (AWG), and multimode interference couplers (MMI
Learn how to leverage IPKISS to optimize the design of directional couplers and implement advanced parametric modeling. Introduction A directional coupler
Figure 1 presents a schematic diagram of the envisaged directional coupler-based duplexer design with integrated lasers.
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
Compact integrated optical directional couplers with symmetrically- and asymmetrically etched S-bend waveguides on SOI platform have been designed,
Based on the finite difference eigenmode and finite-difference time-domain simulation results, we analyze the effects of fabrication errors on the coupling of these directional couplers.
This paper focuses on the design, optimization, and characterizations of a low-loss, compact directional coupler-based duplexer.
Directional Couplers are passive devices used for sampling incident and reflected microwave power, conveniently and accurately, with minimal disturbance to the
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
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
Combinational circuits that utilize solely optical means are crucial elements for processing optical information and are used in a wide variety of
Broadband Silicon-On-Insulator (SOI) directional couplers are designed based on a combination of curved and straight coupled waveguide sections. A design