An optical-fiber ribbon having excellent flexibility, strength, and robustness includes optical fibers having a sacrificial, outer release layer that facilitates separation of an optical fiber from the optical-fiber ribbon without damaging the optical fiber's glass core, glass cladding, primary coating, secondary coating, and ink layer, if present.

A novel polymer optical waveguide and method of manufacturing is presented herein. A digitally manufactured process is described which utilizes a micro-dispensed UV optical adhesive as the contour guiding cladding, a fused deposition modeling technology for creating a core, additional optical adhesive to complete the cladding and a subtractive laser process to finish the two ends of the optical interconnect.

A polymer body includes a first thermoplastic polymer, and a second thermoplastic polymer. The first thermoplastic polymer and the second thermoplastic polymer form a continuous solid structure. The first thermoplastic polymer forms an external supporting structure that at least partially envelops the second thermoplastic polymer. A first flow temperature of the first thermoplastic polymer is at least 10 C. higher than a second flow temperature of the second thermoplastic polymer. The first thermoplastic polymer may be removable by exposure to a selective solvent.

An optical fiber having a Bragg grating along a non-photosensitized grating region thereof and a pristine polymer coating around the grating region with the Bragg grating having been written through the polymer coating has a mechanical resistance that is greater than 20% of the mechanical resistance of an identical grating-free optical fiber.

A ring resonator filter, that is formed of a silica-based planar lightwave circuit, includes a core and a clad, the core including two arm units, a ring-like unit, and two optical coupling/branching units that optically couple the two arm units with the ring-like unit, and the optical coupling/branching units having a branch ratio that is either larger than 0% and less than 50% or larger than 50% and less than 100%.

The present invention provides a plastic optical fiber comprising a core and a sheath consisting of at least one layer, the plastic optical fiber having a transmission loss of 120 dB/km or less as measured by a 25 m-1 m cutback method under conditions of a wavelength of 525 nm and an excitation of NA=0.45, and satisfying either one of the following conditions when a thickness of the innermost sheath layer is 0.5 m to 4.5 m, an amount of foreign matter having a size of 2 m or greater contained in the innermost sheath layer is 2000/cm.sup.3 or less, or a size X (m) of foreign matter contained in the innermost sheath layer and an amount Y of the foreign matter (number/cm.sup.3) satisfy formula (1) below: Y1200 X e.sup.(0.067X) (1). Such optical fibers have a low transmission loss of green light (in particular, light having a wavelength of 525 nm), enabling longer distance communication.

Disclosed is an optical fiber with reducing light bias for lighting including: a core extending in a length direction and formed of a material containing a phosphorus (P) based stabilizer; and a clad formed to surround the core, wherein the phosphorus (P) based stabilizer contains cyclic phosphite.

A dielectric waveguide and/or a cable for transmission of millimeter-wave signals. The dielectric waveguide and/or the cable comprises an inner core having a dielectric medium adapted to transmit a millimeter-wave signal by carrying an electromagnetic field along the dielectric waveguide and/or the cable. The dielectric medium is a dielectric material having dielectric properties adapted to confine the propagating electromagnetic field to the inner core, while adding low transmission loss at signal frequencies in a millimeter-wave frequency range. The dielectric medium may be provided as a core of solid dielectric material, one or more bundles of fibers that extend along the length of the inner core, or as powder and/or granulate of dielectric material that fills the volume of the inner core. The dielectric material may be quartz or alumina.

A spatial light modulator (SLM) is provided that includes an optical resonator (i.e., pixel) having nanoscale size. The optical resonator having nanoscale size includes a phase-change material such as, for example, a GeSbTe alloy, sandwiched between silicon nitride cladding layers. The phase-change material can undergo a crystalline-to-amorphous phase transition which is characterized by a large change in optical properties of the resonator.

An optical fiber including a glass core, and a polymer cladding formed around the glass core, the polymer cladding containing a mixture of a polymerizable composition and a silane coupling agent, and a fluorine-based ultraviolet curable resin. The mixture contains 5 to 95 parts by weight of the silane coupling agent based on 100 parts by weight of the total weight of the mixture. The fluorine-based ultraviolet curable resin alone has a refractive index in a range of 1.350 to 1.420 after ultraviolet curing. A component originated from the silane coupling agent is concentrated within a range of 20 m or less in the polymer cladding from an interface between the glass core and the polymer cladding.