Abstract: An example of an optical fiber includes an attenuating cladding disposed around a first waveguide (e.g., a core) and a waveguide (e.g., a waveguide cladding) disposed around the attenuating cladding. An attenuating cladding may be a doped layer that may be doped with, for example, a dopant comprising metal. A first waveguide and a second waveguide may each transmit light for a distinct sample characterization technique. An example of an optical fiber includes a core, a first intermediate cladding disposed around the core, an attenuating cladding disposed around the first intermediate cladding, an attenuating cladding disposed around the first intermediate cladding, a second intermediate cladding disposed around the attenuating cladding, a waveguide cladding disposed around the second intermediate cladding, and outer cladding disposed around the waveguide cladding, and an outer coating around the outer cladding. An optical fiber may be formed using a rod-in-tube process.

Abstract: An assembly of two fiber optic ferrules allows for the mating of a CWDM fiber optic ferrule with a non-CWDM fiber optic ferrule. The CWDM fiber optic ferrule has optical fibers that carry optical beams with at least two different wavelengths, which the non-CWDM ferrule has optical fibers that carry only one wavelength. The CWDM fiber optic ferrule and the non-CWDM fiber optic ferrule have optical fibers that are inserted along parallel axes. The non-CWDM fiber optic ferrule has a lens pitch that matches the CWDM ferrule.

Abstract: The present disclosure provides an optical fibre joint enclosure for providing housing to a plurality of optical fibres and a plurality of optical fibre cables. Further, the optical fibre joint enclosure includes a dome cover, a latch, a metal lock wire, a lock and a port assembly. Furthermore, the optical fibre joint enclosure includes a plurality of storage baskets. The plurality of storage baskets includes a first basket, a second basket and a third basket. The first basket is positioned on a first side inside the dome cover of the optical fibre joint enclosure. The second basket is positioned on a second side inside the dome cover of the optical fibre joint enclosure. The third basket is positioned in middle of the first basket and the second basket.

Abstract: Electro-optic modulation of multiple phase modulator waveguides with a single electrode is made possible by determining places of equal electric field strength. Substrate extensions support edges of a wide hot electrode and ground electrodes equally spaced from the wide hot electrodes. Waveguides are positioned in the extensions separated from the electrodes by buffer layers. A wide microstrip hot electrode on a buffer layer, wider substrate and ground has multiple waveguides in the substrate below the buffer layer. A thinned substrate has a microstrip hot electrode and spaced coplanar grounds with multiple waveguides located on both sides. Decreasing substrate thickness flattens the electric field strength between the electrodes and allows multiple waveguides located between the central hot and outer ground electrodes. Adjacent waveguides with different asymmetric waveguide index portion staged along their length eliminate cross talk.

Abstract: This application relates to an optical connector holder and an optical connector assembly including the optical connector holder. In one aspect, the optical connector holder includes a holder body including a mounting hole for inserting an optical connector, and a support piece extending from the mounting hole toward a rear side of the holder body to support the optical connector. The optical connector holder may also include a front end locking protrusion protruding from the mounting hole toward the optical connector to catch at least a portion of the optical connector when the optical connector is inserted into the mounting hole. The optical connector holder may further include a rear end locking protrusion protruding upward from the support piece so that the optical connector is seated in the mounting hole while being caught by the front end locking protrusion.

Abstract: The disclosure provides an optic fiber connector, including a ferrule, a holder, a connector body having a plurality of first locking slots, a spring sleeved onto the holder, and a retainer having a plurality of locking hooks. The ferrule is assembled to the holder. The spring, the holder, and the ferrule are received in a space formed between the retainer and the connector body by locking the locking hooks with the locking slots respectively, wherein the spring is compressed by locking such that the retainer, the holder, the spring, and the connector body are abutted with each other.

Abstract: An optical multiplexing circuit includes a plurality of branching units configured to each divide light output from a corresponding one of a plurality of input waveguides, a multiplexing unit configured to multiplex a plurality of first beams of the light, each obtained by dividing the light by a corresponding one of the plurality of branching units, an output waveguide configured to output the light multiplexed by the multiplexing unit, a plurality of monitoring filters configured to individually input, via a first monitoring waveguide, a corresponding one of a plurality of second beams of the light, a wavelength through each of the plurality of monitoring filters having a transmittance of 50% being set to be a center wavelength of the plurality of second beams of the light, and a change in wavelength due to an assumed change in temperature being set to be less than half of an FSR, and a plurality of second monitoring waveguides.

Abstract: A silicon photonics substrate for a transceiver includes a substrate member comprised of a first silicon material, and, heterogeneously formed on the substrate member, receiver circuitry and transmitter circuitry. The receiver circuitry is comprised of a second silicon material and is configured to receive a coherent input signal, generate first and second oscillator signals based on light input from a laser diode, and detect a transverse electric (TE) mode signal and a transverse magnetic (TM) mode signal in the coherent input signal based on the first and second oscillator signals. The transmitter circuitry is comprised of the second or a third silicon material and is configured to transmit signals having the two or more possible modulation formats and modulate the light input from the laser diode in either a TE mode or a TM mode to generate a coherent output signal.

Abstract: The present disclosure relates to a molded ferrule holder that can be coupled to a ferrule eliminating the need for automated injection molding machines and allowing for the use of low cost, low temperature polymers for the ferrule holder materials.

Abstract: A connector, such as a fiber optic connector, including a protective sealant layer bonded to a mating interface of the connector to protect against contaminants and damage to the mating interface prior to use. The sealant layer may comprise a liquid polymer applied to the mating interface using a seal mold to help prevent the polymer from wicking. The liquid polymer may dry at room temperature by solvent evaporation to form a protective barrier covering the mating interface to protect against physical and chemical damage. The protective seal layer also serves to clean the mating interface upon removal of the seal layer to provide for optimal performance of the connector.

Abstract: Optical components and methods of manufacture thereof. A first optical component has a hollow-core photonic crystal fiber includes internal capillaries for guiding radiation and an outer capillary sheathing the internal capillaries; and at least an output end section having a larger inner cross-sectional dimension over at least a portion of the output end section than an inner cross-sectional dimension of the outer capillary along a central portion of the hollow-core photonic crystal fiber prior to the output end section. A second optical component includes a hollow-core photonic crystal fiber and a sleeve arrangement.

Abstract: A fiber optic cable assembly comprises: a cable jacket; distinct groups of optical fibers carried within the cable jacket and extending beyond a first end of the cable jacket; a furcation body positioned on the first end of the cable jacket such that the distinct groups of optical fibers have respective fiber end sections extending beyond the furcation body; and a pulling grip assembly protecting the fiber end sections. The pulling grip assembly includes a pulling band releasably secured to the cable jacket by a clamp, and is configured to withstand significant tensile loads despite being easily removable.

Abstract: Disclosed are apparatuses for optical coupling and a system for communication. In one embodiment, an apparatus for optical coupling having an optical coupling region is disclosed. The apparatus for optical coupling includes a substrate and a core layer disposed on the substrate. The core layer includes a plurality of holes located in the optical coupling region. An effective refractive index of the core layer gradually decrease from a first end of the optical coupling region to a second end of the optical coupling region.

Abstract: Embodiments presented in this disclosure generally relate to an optical device having a grating coupler for redirection of optical signals. One embodiment includes a grating coupler. The grating coupler generally includes a waveguide layer, a thickness of a waveguide layer portion of the waveguide layer being tapered, the thickness defining a direction, and a grating layer disposed above the waveguide layer and perpendicular to the direction where at least a grating layer portion of the grating layer overlaps the waveguide layer portion of the waveguide layer along the direction. Some embodiments are directed to grating coupler implemented with material layers above and a reflector layer below a grating layer, facilitating redirection and confinement of light that improves coupling loss and bandwidth. The material layers and reflector layer above and below the grating layer may be implemented with or without the waveguide layer being tapered.

Abstract: A multi-fiber splice protector comprises a strength member including opposing first and second walls connected along only edge, and including unconnected opposing first and second wall extensions. The splice protector has a compact width that permits it to be incorporated with multiple fusion splice optical fibers in a multi-fiber push-on (MPO) type connector utilizing conventional MPO components. Protected splice joints may be provided between a multi-fiber ferrule and a boot of a connector, with at least a portion of a split jacket section of a fiber optic cable arranged within the boot. The jacket may have a split length of less than 25 mm and/or an entirety of the split jacket is within the boot. If provided, heat shrink tubing covering the split jacket may have a reduced length and/or may be confined within the boot.

Abstract: The invention relates to an optical fiber connector and to a related method for changing the polarity thereof. The connector comprises a ferrule, housing a plurality of terminations of optical fibers, and an inner housing arranged around the ferrule and comprising a rear portion and a front portion configured to be inserted into an optical fiber adapter.

Abstract: An optical assembly may include a base having a body defining a base mating feature surface. Optical modules are arranged in side-by-side relation on the base and in optical communication with each other. Each optical module includes a housing that is commonly-shaped with other housings. Each housing has a bottom wall defining a module mating feature surface coupled with a respective area of the base mating feature surface and at least one sidewall with an optical communication opening aligned with the at least one optical communication opening of an adjacent housing. A respective optical device is within each housing.

Abstract: A transparent optical device (100) is provided, comprising a lightguide medium (101) configured for light propagation, and an at least one optically functional layer (10) comprising at least one optically functional feature pattern (11) formed in a light-transmitting carrier medium (11 1) by a plurality of embedded features provided as optically functional internal cavities (12), wherein said at least one feature pattern (11) is configured to perform an incident light control function and at least a light outcoupling function, whereby stray light is minimized and optical transparency of the device (100) is established.

Abstract: Disclosed herein is an optical system, comprising a first optical component, featuring a first waveguide and a recess which passes at least partially through the first optical component from a front side to a back side, a second optical component, arranged in the recess of the first optical component, and a second waveguide optically coupled with the first waveguide, and a carrier substrate. The first optical component including a first marking set with a defined position/orientation relative to the first waveguide, the second optical component including a second marking set with a defined position/orientation relative to the second waveguide, and based on a relative position/orientation of the first and second marking sets, determine whether the first and the second optical components are aligned in a reference plane that is parallel to a surface of the carrier substrate, such that the first and the second waveguide are optically coupled.

Abstract: A cable distribution system is provided wherein a feeder cable with one or more feeder fibers is received by a distribution device or box. The feeder fibers are terminated to a fiber optic connector. Customers can directly connect to the connectors of the feeder cable through an adapter and a mating connector for a point-to-point connection. Alternatively, a splitter input can be connected to one or more of the connectors of the feeder cable, such as through a pigtail extending from the splitter, wherein the splitter splits the signal as desired into a plurality of outputs. The outputs of the splitters can be in the form of connectors or adapters. Customers can connect to the splitter outputs through a mating connector (and an adapter if needed).