Aug 28, 2025
As a kind of significant fiber device, an optical fiber coupler can make the nonlinear optical microscopy more compact and flexible for in vivo imaging. We numerically investigate the coupling
Jun 10, 2026
Download scientific diagram | | (A) Structure of the fiber coupler and the phase and polarization state of the input lights (B) Generation of OAM modes of
Oct 26, 2025
In this paper, a compact six-channel optical demultiplexer and coupler have been designed using a novel photonic crystal resonator for Intermediate Frequency
Mar 21, 2026
Download scientific diagram | Schematics of (a) a 2x2 optical fiber directional coupler and (b) a fiber half coupler, (c) Cross-section of the tapered waist region,
Apr 30, 2026
Design a grating coupler connecting a single-mode fiber on the surface of a photonic chip to an integrated waveguide. The built-in particle swarm optimization tool is
Sep 14, 2025
The transmission characteristics of the dual-core photonic crystal fiber such as coupling length, birefringence, and coupling loss are analyzed with
Feb 01, 2026
An adjustable access coupler for multimode fiber-optic networks has been constructed, based on the voltage-tunable total-internal-reflection effect in nematic liquid crystals.
Feb 03, 2026
Fiber optic couplers are optical devices that connect three or more fiber ends, dividing one input between two or more outputs, or combining two or more inputs
Jul 03, 2026
A fiber coupler is defined as a 2 × 2 symmetric device that equally splits an input optical signal between throughput and coupled ports, typically achieving a 50:50 power distribution at specific wavelengths.
Jul 31, 2025
Fiber connections such as connectors and splices and the associated intrinsic and extrinsic losses are described. The construction of couplers and branches, including the associated
Sep 25, 2025
This technical note will describe how a fused optical fiber coupler works and how it is made. Once an understanding of this has been obtained, some of the principals of operation will be made clear at
Nov 12, 2025
This study examines the impact of photonic crystal fiber coupler structures on the transmission characteristics and extinction ratios of triple-core couplers for all-optical logic
Mar 17, 2026
A new evanescent-field-based coupler that achieves high coupling efficiency between a single-mode fiber (SMF) and a photonic crystal fiber (PCF) is proposed.
Nov 05, 2025
The most common operating principle of a directional fiber coupler is evanescent wave coupling in a configuration where two fiber cores come close to each other.
Nov 25, 2025
The main functions and applications of fiber-to-chip couplers in silicon photonic circuits are briefly introduced above. In this review paper, we
Oct 17, 2025
A fiber coupler is defined as a device that enables the coupling of light between two single-mode fibers, achieved by bringing their cores close enough to allow optical modes to overlap,
Jun 20, 2026
Fiber couplers or nonlinear fiber couplers or directional couplers possess more than one single-mode optical fibers placed parallel to each other with an inter-fiber separation of the order of the excitation
Jul 31, 2025
Figures were obtained from . a) Illustration, and b) structural details of the three-port grating coupler proposed in . It consists of three waveguide
Sep 17, 2025
A fiber coupler is an optical fiber device that connects multiple fibers, allowing light from an input fiber to be distributed to one or more output fibers. The term can also refer to a fiber launch system for
Mar 16, 2026
In this paper, we present a thorough analysis, both theoretically and experimentally, of the directional coupler structure, including the mode properties, coupling characteristics, and thermal
Dec 14, 2025
A grating coupler is defined as a device that uses a periodic structure to diffract light in and out of an optical fiber by directing vertically incident light into waveguides through the principle of diffraction. Its
Mar 04, 2026
An improved 1×4 coupler based on all solid multi-core photonic crystal fiber is proposed and analyzed. The expressions to calculate the coupling lengt
Jul 13, 2026
Fiber couplers are fiber devices for coupling light from one or several input fibers to one or several output fibers, or from free space into a fiber.
Apr 15, 2026
Download scientific diagram | Typical structure of microfiber coupler. from publication: Ultrasensitive Optical Fiber Sensors Working at Dispersion Turning Point: Review | Optical fiber sensors
Feb 26, 2026
This chapter presents a novel design of a highly tunable coupler based on soft glass photonic crystal fiber (PCF) with air holes and dual nematic liquid crystal (NLC) core (SGLC‐PCF).
Aug 11, 2025
This chapter deals with the internal structure of synthetic and cellulosic fibers. It differs fundamentally from the structure of inorganic fibers (e.g.
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