Oct 04, 2025
Abstract The optimal design of coupling waveguide structure for adiabatic optical directional full couplers (AODFC) based on weighted sin-square function (SSF) and raised-cosine
Aug 18, 2025
We experimentally demonstrate the efficiency of these stationary geometrical dimensions in a single-coupler design and subsequently utilize them to fabricate a quantum two-photon
Sep 27, 2025
The 2 × 2 3-dB couplers are one of the most widely used and important components in silicon photonics. Here, we propose an ultra-broadband and compact 2 × 2 3-dB adiabatic coupler defined by b
Aug 09, 2025
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
Nov 30, 2025
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
Aug 15, 2025
Directional coupler is a basic function in an integrated photonic circuit, in which energy of the optical signal is coupled between adjacent optical waveguides.
Oct 07, 2025
“Design of Optical Fiber 50/50 Y Coupler & 60/40 Y Coupler & Their Use Cases” is my graduate project submitted in partial fulfillment of the requirements for the degree of Master of Science in Electrical
Jul 22, 2025
A Directional coupler is a device that samples a small amount of Microwave power for measurement purposes. The power measurements include incident power,
Dec 10, 2025
In this work, a terahertz-range handheld integrated-photonic directional coupler is reported with broad operation bandwidth spanning more
Mar 17, 2026
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
Mar 25, 2026
Request PDF | Design of All-Optical Directional Coupler Using Plasmonic MIM Waveguide for Switching Applications | In this paper, we have
Jul 16, 2025
The optical directional coupler, analogous to the microwave element1 of the same name, consists of parallel channel optical waveguides sufficiently closely spaced that energy is transferred from one to
May 23, 2026
In optical circuits, directional couplers usually work on two parallel and closely spaced waveguides, enabling the exchange of energy between modes of the two waveguides via the
Jan 04, 2026
Qualitative Description of the Operation of Directional Couplers Marcatili''s Improved Coupled-Mode Equations Directional Couplers with Uniform Cross Section and Constant Spacing
Apr 05, 2026
In this tutorial, we''ll uncover the benefits of creating a parametric model for directional couplers, leveraging the advanced layout and model-building
Aug 15, 2025
We present the design of a fabrication-tolerant directional coupler in a passive photonic integrated chip fabricated on Imec''s iSiPP50G silicon photonics platform.
Oct 04, 2025
Abstract: Directional couplers (DCs) are the basic elements for constructing various silicon photonic devices, including Mach– Zehnder switches (MZSs). Here, we propose a novel 2×2
Apr 21, 2026
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
Feb 25, 2026
Directional coupling of light at the nanoscale plays a significant role in both fundamental research and practical applications, which are crucial for the
Jul 26, 2025
This paper focuses on the design, optimization, and characterizations of a low-loss, compact directional coupler-based duplexer.
Jun 22, 2026
Abstract—We demonstrate a design for a high-performance 2 × 2 splitter meeting the essential requirements of broadband coupling, support for arbitrary coupling ratio, ultra low-loss, high
Feb 20, 2026
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
Aug 29, 2025
This paper presents a directional coupler with independently adjustable power divisions and phase differences. The proposed directional coupler is composed of a compact 90° coupler with tunable
Nov 06, 2025
Consequently, the variability in coupling location and eficiency can greatly influ-ence measurement accuracy, making it dificult to isolate and quantify the true performance of the optical
Jul 25, 2025
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
Feb 06, 2026
We have designed and fabricated a photonic crystal directional coupler for use as an optical switch. The design is for the SOI material system, and includes a silica overlayer and infilling of the etched
Mar 16, 2026
A directional optical coupler can be made by simply fusing fibers together for a certain length known as fused fiber coupler, or using coupled ridge optical waveguides on a PLC.
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