A fiber-coupled LED (light-emitting diode) refers to an LED device that is optically coupled to an optical fiber for the purpose of efficient light transmission. In this configuration, the LED serves as a light source, and its emitted light is...

An instrument that measures the angle at which a prism can couple laser light into an optical waveguide; used to determine...

A device used to accelerate the electrons in a free-electron laser by channeling microwave energy into waveguide cavity...

A waveguide having a characteristic that is altered continuously with the distance traveled, relative to the axis of its...

A glass structure from which an optical fiber waveguide may be drawn.

An optical waveguide in which only the lowest order bound mode, which may consist of a pair of orthogonally polarized...

Triggering a laser at a predetermined time by pumping it to a level just below its threshold and then using an auxiliary...

An optical combiner, in the context of optics and display technologies, refers to a device or component that combines...

In an optical waveguide, a mode whose field decays monotonically in the transverse direction everywhere external to the core...

In an optical waveguide, the exchange of power/energy among modes.

In an optical waveguide, that loss attributable to macrobending. Macrobending usually causes little or no radiative loss.

A thin-film device containing miniature optical components connected via optical waveguides on a transparent dielectric...

Plasmonics is a field of science and technology that focuses on the interaction between electromagnetic radiation and free...

A permanent joint whose purpose is to couple optical power among two or more ports. Also, a device whose purpose is to...

The number of bound modes that an optical waveguide is capable of supporting.

A transparent dielectric film, bounded by material of a lower index of refraction, capable of guiding light.

A waveguide that has a core with a lower refractive index than the refractive index of the cladding. This structure can...

Gas laser in which the tube acts as a channel for the laser beam.

The diffraction pattern of a source such as a light-emitting diode, injection laser diode or the output end of an optical...

A method of fabricating an optical waveguide by melting the core and clad glasses in two suitably joined concentric...

Also referred to as the V number in fiber optics; the normalized frequency is a dimensionless quantity, denoted by the...

An electro-optic modulator (EOM) is a device used to modulate the amplitude, phase, or polarization of light waves using an...

In an optical fiber or waveguide communications system, an optoelectronic device or module that receives an optical signal,...

End-fire coupling refers to a method of coupling energy into or out of a waveguide, transmission line, or antenna, where the...

Low-insertion-loss fiber coupler fabricated from a sheet of light-sensitive material laminated onto a fused quartz substrate...

In an optical waveguide, a ray that is completely confined to the core.

A pair of waveguides with axes normal to the plane and that guide uniform cylindrical waves.

Sapphire refers to a crystalline form of aluminum oxide (Al2O3) that is used in various optical and photonic applications...

In an optical waveguide,- typically a multimode fiber - the distortion resulting from differential mode delay, i.e. axial...

Operation in which the dispersion of a pulse limits the distance between repeaters in optical systems. Waveguide and...

The lowest order mode of a waveguide. In fibers, the mode designated LP01 or HE11.

A casting consisting of an optical material molded into the desired geometry for grinding, polishing or, in the case of...

1. The characteristic of how light propagates through a waveguide that can be designated by a radiation pattern in a plane...

Photonic crystals are artificial structures or materials designed to manipulate and control the flow of light in a manner...

Propagation of electromagnetic waves through the Earth's atmosphere in a path that conforms to the curvature of the Earth...

In an optical waveguide, the refractive index as a function of radius.

The use of an electric field or signal to couple a lightwave from one dielectric waveguide into another dielectric waveguide.

The propagation constant evaluated along the axis of a waveguide, that is, in the direction of transmission. Also called...

A waveguide with a rectangular cross section that is composed entirely of dielectric materials.

An infrared-transmitting optical fiber with a hollow core; it can be square, round or rectangular in cross section. Capable...

In a single-mode optical fiber, the wavelength that causes material dispersion and waveguide dispersion to cancel each...

In an optical waveguide, a mode whose field decays monotonically for a finite distance in the transverse direction but which...

For each mode in an optical waveguide, the term used to describe the process by which an electromagnetic signal is distorted...

Any structure having the ability to guide the flow of radiant energy along a path parallel to its axis and to contain the...

A power loss caused by transverse or lateral deviation from optimum alignment of source to optical waveguide, waveguide to...

Integrated photonics is a field of study and technology that involves the integration of optical components, such as lasers,...

A configuration or device mounted at the end of a fiber or cable that is intended to prevent reflection.

In an optical waveguide, a ray for which geometric optics would predict total internal reflection at the core boundary, but...

Nanophotonics is a branch of science and technology that explores the behavior of light on the nanometer scale, typically at...

With respect to waveguides, the continuous change in the direction of the axis of the wavelength, during which the axis is...

Scattering (other than material scattering) that is attributable to variations of geometry and index profile of the...

An edge-emitting light-emitting diode is a type of LED structure where light emission occurs primarily along the edge of the...

Any isolated wave that propagates without dispersion of energy. Specifically to photonics, an ultrashort pulse of laser...

The central hole running the full length of a laser capillary tube, in which electrical discharge and laser action take...

For a particular mode in a waveguide, the ratio of the angular frequency to constant phase.

An optical waveguide having a silica core and a plastic cladding.

A photonic integrated circuit (PIC) is a compact and integrated device that incorporates multiple photonic components and...

An optical waveguide that will allow more than one bound mode to propagate.

A passive coupler that distributes signals from one or several inputs among a larger number of output waveguides arranged...

A theoretical analysis of radiation loss from planar optical waveguides due to scattering by surface irregularities/surface...

In a waveguide, a change in direction of the axis without deviating from the plane of polarization.

Optical materials refer to substances or compounds specifically chosen for their optical properties and used in the...

A waveguide made up of a dielectric material, such as plastic or mica, in a cylindrical form, through which the waves travel.

A laser with output over a wide range of wavelengths spanning the far-infrared region of the spectrum (30 to 1000 µm);...

The condition in a multimode optical waveguide in which the relative power distribution among the propagating modes is...

A micro-ring resonator is a compact optical device that utilizes the resonant behavior of light within a small ring-shaped...

A broadband filter is an electronic or electromagnetic device designed to pass a range of frequencies or signals within a...

The combination of two or more signals for transmission along a single wire, path or carrier. In most optical communication...

Angular deviation from the optimum alignment of source to optical waveguide, waveguide to waveguide, or waveguide to...

A method of fabricating a graded-index optical waveguide by means of an ion exchange process.

Direct conversion of a photon from one wavelength to a lower energy photon of another wavelength(s) due to inelastic...

A mode in an optical waveguide whose fields are transversely oscillatory everywhere external to the waveguide. It exists...

A waveguide is a physical structure or device that is designed to confine and guide electromagnetic waves, such as radio...

A waveguide or coaxial cable that transmits a signal from an antenna to a receiver or from a transmitter to an antenna.

In an optical waveguide, that dispersion attributable to the variation of refractive index profile with wavelength. The...

The length of optical waveguide needed to attain equilibrium mode distribution for a specified excitation condition.

A light ray that has had its direction altered because of its traversing an air-to-glass interface at some angle. In an...

That distortion resulting from dispersion of the group velocity of a propagating mode. It is the only distortion occurring...

In a waveguide, the material in intimate contact with the cladding surface, applied to preserve the integrity of that...

A wave that is guided by the interface between two different media or by a refractive index gradient in the medium. The...

1. In color development, the chemical that combines with certain by-products of the development procedure to form a dye. 2....

The numerical aperture of an optical system used to couple (launch) power into an optical waveguide.

A device that consists of two types of mode converters, one of which must be magnetic. It is nonreciprocal because the...