Abstract: An optical fiber has corrugations on an outer surface to dissipate a portion of an input light beam, allowing the remaining portion of the light beam to be coupled to the optical fiber. By dissipating the portion of input light, damage to the optical fiber by uncoupled light is reduced.

Abstract: The optical fibre ribbon of the present disclosure has one or more base access. The optical fibre ribbon of the present disclosure includes a plurality of optical fibres, a coating layer bonding the plurality of optical fibres, and a slit. The slit in the optical fibre ribbon is made between two optical fibres of the plurality of the optical fibres. The optical fibre ribbon has flat surface on top and corrugated surface in bottom. The optical fibre ribbon has a coating layer that is a layer of matrix material. The coating layer is made of single layer of matrix material.

Abstract: Embodiments of the disclosure provide an optical antenna for a photonic integrated circuit (PIC). The optical antenna includes a vertically oriented semiconductor waveguide with a first end on a semiconductor layer. The vertically oriented semiconductor waveguide includes a first sidewall and a second sidewall opposite the first sidewall. A reflective material is along the second sidewall of the vertically oriented semiconductor waveguide. A first plurality of grating protrusions extends from the first sidewall of the vertically oriented semiconductor waveguide.

Abstract: A large scale, non-blocking fiber optic cross-connect system consists of multiple stages, including a central multifiber per connection system. The number of ports of this cross-connect system scales to over 10,000, in an incremental, modular, field expandable approach. Two separate arrays of “edge” cross-connect systems using KBS methodology are positioned on opposite sides of a central core cross-connect system, wherein the core system is comprised of switchable blocks of multi-fiber trunk lines, each terminated in a single connector that is reconfigurable by robotic means. The trunk lines between edge cross-connects are controlled by a trunk line management system to provision/deprovision blocks of multiple connections at a time in a “core” cross-connect circuit block between edge cross- connects. The core system is configured to controllably interconnect the physically separate edge cross-connect systems which concurrently direct data along selected paths to and from the central core circuit block.

Abstract: The present disclosure provides an optical fibre. The optical fibre includes a core, an inner cladding, a first trench region, an intermediate cladding, a second trench region, and an outer cladding. The core has a first radius. The inner cladding is defined by the first radius and a second radius of the optical fibre. The first trench region is defined by the second radius and a third radius. The first trench region. The intermediate cladding is defined by the third radius and a fourth radius. The second trench region is defined by the fourth radius and a fifth radius. The outer cladding is defined by the fifth radius and a sixth radius.

Abstract: In various embodiments, the beam parameter product and/or numerical aperture of a laser beam is adjusted utilizing a step-clad optical fiber having a central core, a first cladding, an annular core, and a second cladding.

Abstract: An Electrically Switchable Bragg Grating (ESBG) despeckler device comprising at least one ESBG element recorded in a hPDLC sandwiched between transparent substrates to which transparent conductive coatings have been applied. At least one of said coatings is patterned to provide a two-dimensional array of independently switchable ESBG pixels. Each ESBG pixel has a first unique speckle state under said first applied voltage and a second unique speckle state under said second applied voltage.

Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.

Abstract: Integrated wavelength selectors are described. The wavelength selector may include silicon nitride ring resonator disposed vertically between a heater and a temperature sensor. The temperature sensor may be formed of silicon in some embodiments. The wavelength selector may be coupled to the output port of a tunable laser, or may be disposed within a laser cavity.

Abstract: A nested anti-resonant nodeless hollow core fiber (NANF) enables transmission of multi-kilowatt, continuous wave (CW) light beams operating in wavelengths between 1050 nm and 1100 nm provided by single mode lasers. Such a NANF has little loss over kilometer ranges, and can be employed in long distance subsurface applications, such as in the petroleum industry.

Abstract: Provided is a light guide plate for an image display device which uses lead-free glass, has excellent color reproducibility and a light weight, and may obtain a wide viewing angle. A light guide plate for an image display device, which guides image light inputted from an image display element and outputs the image light toward a user's pupil, is configured to be made of lead-free glass having a refractive index of 1.8 or more with respect to a wavelength of the image light, and to have internal transmittance of 0.6 or more with respect to a wavelength of 400 nm when a plate thickness is 10 mm.

Abstract: Disclosed is a chip structure that includes heater. The heater includes a heating element with a first end and a second end and, between the first and second ends, different portions with different cross-sectional areas. The heating element further includes first and second terminals at the first and second ends, respectively. Current flowing through the heating element between the first and second terminals causes the heating element to generate heat. However, due to the different cross-sectional areas of the different portions, the current densities through those different portions are different and, thus, the different portions of the heating element generate different amounts of heat per unit length. The heating element can be designed and placed on-chip to facilitate local thermal tuning of different regions of a device or of different devices without requiring multiple different heating elements within a relatively small chip area. Also disclosed is an associated method.

Abstract: A method for mitigating modal noise includes applying a time-varying mechanical force to a fiber segment of the multimode optical fiber in at least a first direction orthogonal to a fiber axis of the multimode optical fiber within the fiber segment. A modal-noise mitigator for a multimode optical fiber includes an actuator configured to apply a time-varying mechanical force to a fiber segment of the multimode optical fiber in at least a first direction orthogonal to a fiber axis of the multimode optical fiber within the fiber segment.

Abstract: A fiber connector, comprising a housing comprising a region extending in a lengthwise direction an optical fiber disposed in the region, a first portion of the optical fiber comprising an inner core, a cladding layer surrounding the core, and a first outer polymer layer surrounding the cladding layer and a second portion of the optical fiber comprising the inner core, the cladding layer surrounding the core and a second outer polymer layer that is different from the first polymer layer.

Abstract: The present invention relates to a glass fiber (1) comprising at least one fiber core (10), at least one fiber cladding (11) which at least substantially encloses the fiber core (10) in the circumferential direction (U) and along the longitudinal axis (X), and at least one fiber coating (12) which substantially encloses the fiber cladding (11) in the circumferential direction (U) and along the longitudinal axis (X), wherein the glass fiber (1) has at least one first exposed portion (13a) where the fiber cladding (11) is exposed by the fiber coating (12), for removing light (B) at least from the fiber cladding (11), wherein at least the fiber cladding (11) has a plurality of recesses (14) at least substantially in the radial direction (R), which recesses are designed to at least partially discharge the light (B) at least from the fiber cladding (11).

Abstract: An optoelectronic assembly comprises at least two electrical contacts on a surface of an optoelectronic component for supplying electrical energy for generating electromagnetic radiation, and at least two meander-shaped contact lugs, each of which comprises a first and a second section. The first section in each case of the at least two meander-shaped contact lugs is coupled to one of the at least two electrical contacts. The second section in each case of the at least two meander-shaped contact lugs comprises a fastening element which is designed to go into a mechanical linkage to a fiber structure of a carrier and to create an electrical connection to the first section.

Abstract: A microLED based optical chip-to-chip interconnect may optically couple chips in a variety of ways. The microLEDs may be positioned within a waveguide, and the interconnects may be arranged as direct connections, in bus topologies, or as repeaters.

Abstract: There is described an optical fiber coupler generally having: a first optical fiber having a longitudinally extending multimode guiding region and a first taper portion longitudinally extending between first and second locations of the first optical fiber, the first taper portion having a dimension progressively decreasing along a first taper direction from the first location to the second location; a second optical fiber having a longitudinally extending multimode guiding region and a second taper portion longitudinally extending between third and fourth locations of the second optical fiber, the second taper portion having a dimension progressively decreasing along a second taper direction from the third location to the fourth location; and a coupling region where at least a portion of the first taper portion is optically coupled to a portion of the second taper portion, with the first and second taper directions being opposite to one another.

Abstract: A light-diffuser includes a transparent resin and transparent particles dispersed in the transparent resin. The transparent resin has a refractive index different from that of the transparent particles, and at least one portion of an outer perimeter of each of the transparent particles, respectively, is made compatible with the transparent resin disposed in the vicinity of the transparent particles, respectively.

Abstract: A butt closure base includes a base housing defining a plurality of cavities. A first gel is disposed in each of the plurality of cavities. The butt closure base further includes a plurality of wedge assemblies, each of the plurality of wedge assemblies removably insertable into one of the plurality of cavities. Each of the plurality of wedge assemblies includes an outer cover, a second gel, and a main pressure plate in contact with the second gel. The main pressure plate is movable along a longitudinal axis to apply pressure to the second gel. Each of the plurality of wedge assemblies further includes a latch assembly. The latch assembly includes an adjustable tab and a stop member movable between a first position which limits movement of the adjustable tab and a second position in which movement of the adjustable tab is not limited by the stop member.