Abstract: A cut sleeve for a fiber optic connector adapter includes a cylinder having a discontinuity along an axial length of cylinder. The discontinuity is distributed around at least half of a circumference of the cylinder. The cylinder is sized to receive a first fiber ferrule and a second fiber ferrule with cross-sections having a same size minimum bounding circle.

Abstract: A first optical time domain reflectometer (OTDR) connects at a first location along an optical path between multiple optical transmitters and multiple optical receivers in an optical network. An optical filter, connects along the optical path, and includes multiple selectable optical wavelength blockers. A set of different length optical fibers is installed in multiple last fiber legs in the optical path. A controller selects ones of the multiple selectable wavelength blockers of the optical filter for insertion in the optical path; instructs the first OTDR to inject a first OTDR signal at the first location; receive, from the first OTDR, indications of whether a reflection of the first OTDR signal was received from each of the multiple optical receivers; and identifies faults in the optical network based on the received indications whether the reflection of the first OTDR signal was received from each of the multiple OTDR reflectors.

Abstract: A fiber optic cable assembly may include a fiber optic cable that has a jacket and a plurality of optical fibers enclosed by and extending longitudinally within the jacket. The fiber optic cable assembly may also include a micro-duct disposed around at least a portion of the jacket, for example, where the cable is buried below grade. The fiber optic cable assembly may further include an insulating layer disposed around at least a portion of the micro-duct, and an outer layer disposed around the insulating layer. The insulating layer and the outer layer may protect the micro-duct and the cable in the event of high temperature exposure that may arise from nearby high temperature utilities, such as in a manhole, as well as to enable the fiber optic cable to be air jetted through the micro-duct from a starting point to a terminating point of a cable routing path.

Abstract: A multi-core optical fiber may include a cladding with a cross section having a central region and an outside diameter. Multiple transmission cores are arranged symmetrically within the central region of the cladding, extending parallel to a central axis of the multi-core optical fiber. Multiple alignment cores are arranged within the cladding, extending parallel to the central axis of the multi-core optical fiber and near the outside diameter of the cladding so that each of the multiple alignment cores are visible through a side view of the cladding. Ends of similarly configured multi-core optical fibers may be mated and aligned. Alignment cores of a first multi-core optical fiber may be aligned with alignment cores of a second multi-core optical fiber using a side view of the mating interface. Aligning the alignment cores causes multiple transmission cores with the multi-core optical fibers to also align.

Abstract: A device includes a fluid jetting tube, a cylinder and a disk valve. The cylinder is formed on an exterior of the fluid jetting tube and includes a port to receive a fluid supply line and an internal movable piston configured to control an internal volume of the cylinder. The disk valve rotates within the cylinder and extends from the internal volume of the cylinder through a slot in the fluid jetting tube into an interior of the fluid jetting tube.

Abstract: A cut sleeve includes integrated sensors to detect insertion of a fiber optic connector into an adaptor for an optical patch-panel port and to detect whether optical signals are being transmitted through optical fibers in the port. The cut sleeve includes a cylinder with a discontinuity along an axial length of cylinder. The cylinder is sized to receive a first fiber ferrule and a second fiber ferrule of substantially equal diameters. The cut sleeve includes a strain sensing module and a light sensing module. The strain sensing module can detect insertion of the first or the second fiber ferrule into the cylinder. The light sensing module can detect infrared light at an interface of the first and the second fiber ferrule within the cylinder. The strain sensing module and the light sensing module may be included on one or more microchips mounted on a cylinder surface.

Abstract: An apparatus, method, and system are disclosed for housing and terminating various cables. The apparatus is mounted on a base, which allows it to be pivoted to different positions. The apparatus includes a portion capable of receiving a cable containing various types of wires. A patch panel is provided on a track assembly in order allow various operations such as termination of the wires. The apparatus can remain above ground, or positioned below ground when not being accessed.

Abstract: A duct construction, such as a microduct, for deploying various types of cables is disclosed. The duct includes a plurality of protrusions that are formed on its inner surface. The protrusions extend the entire length of the duct in order to reduce and/or eliminate blockages that can result from contact with the cable over extended distances. This allows air from a jetting device to travel unimpeded through the duct, thereby improving cable deployment range and time.

Abstract: A ferrule sleeve includes a sleeve body, where the sleeve body is shaped in a V and includes a V-shaped groove that runs a length of a first side of the sleeve body. The ferrule sleeve further includes a sleeve cover, having a flat, rectangular shape, which fits into an opening of the V-shaped groove of the sleeve body. The ferrule sleeve further includes a cover spring that fits into the opening of the V-shaped groove of the sleeve body adjacent the spring cover, wherein the sleeve cover and the cover spring, when a first cylindrical ferrule is inserted within the V-shaped groove act to hold the first cylindrical ferrule within the V-shaped groove and prevent the first cylindrical ferrule from rotating, or from moving in a longitudinal.

Abstract: An apparatus, method, and system are disclosed for cutting materials such as concrete. The apparatus includes a mounting assembly, and a pair of blades that are mounted at an end of the mounting assembly. Various types of driving assemblies can be provided to supply the force necessary to rotate the two blades. The distance between the blades can also be varied in order to adjust the width of the cut.

Abstract: A cable, and method and system for deploying the cable are described. The cable includes a jacket having a plurality of outer grooves formed on its outer surface. The cable can be deployed by blowing it through a microduct using a jetting apparatus. The outer grooves allow the cable to be deployed over extended distance by allow improved airflow between the first and second ends of the microduct.

Abstract: An apparatus, method, and system are disclosed for testing various properties of a sample, such as a cable or duct. The apparatus includes a duct and a plurality of radius controlling units. The radius controlling units are used to generate bends having a desired bending radius at different sections of the duct. Sensors are provided to measuring different forces and conditions of the sample or the duct. A controller can be provided for receiving sensor measurements and controlling various aspects of the test.

Abstract: Methods and systems for splitting an initiated signal are disclosed. An exemplary system may include a transmitter configured to selectively transmit an initiated signal, and a signal splitter in communication with the transmitter. The signal splitter may be configured to selectively split the initiated signal into a plurality of recipient signals for a plurality of recipient lines in communication with the transmitter. The signal splitter may be configured to selectively modify a number of recipient signals, e.g., by adjusting a spot size of the initiated signal on the signal splitter.

Abstract: A device may use a comb laser in dense wavelength division multiplexed transmitter and/or reconfigurable optical add or drop multiplexer. The device may include a comb laser to provide a source beam having a plurality of wavelengths. The device may further include a wavelength separator to create a plurality of beams from the source beam, where the wavelength separator is coupled to the comb laser. Each beam from the plurality of beams is centered at a different wavelength. The device may further include processors coupled to the wavelength separator, where the processors separately process each beam. The device may further include a wavelength combiner which is coupled to the plurality of processors. The wavelength combiner merges the plurality of beams into an output beam having a plurality of wavelengths.

Abstract: A system is provided for identifying signal propagation information. The system includes at least one component configured to receive an optical input signal and to emit an optical output signal. The emitted optical output signal is representative of the optical input signal, and is associated with characteristic information indicative of the component. A processor is also included, the processor being configured to sense the optical output signal and correlate the characteristic information with said component.

Abstract: A ferrule sleeve includes a sleeve body, where the sleeve body is shaped in a V and includes a V-shaped groove that runs a length of a first side of the sleeve body. The ferrule sleeve further includes a sleeve cover, having a flat, rectangular shape, which fits into an opening of the V-shaped groove of the sleeve body. The ferrule sleeve further includes a cover spring that fits into the opening of the V-shaped groove of the sleeve body adjacent the spring cover, wherein the sleeve cover and the cover spring, when a first cylindrical ferrule is inserted within the V-shaped groove act to hold the first cylindrical ferrule within the V-shaped groove and prevent the first cylindrical ferrule from rotating, or from moving in a longitudinal.

Abstract: An alignment fixture is configured to receive a group of optical fibers with each of the optical fibers having a coating and a bare fiber end. The fixture includes a first end configured to permit insertion of the optical fibers into a body of the fixture and a second end configured to align the bare fiber ends of the optical fibers in a particular arrangement. The fixture includes channels extending from the first end to the second end. An insertion point of each channel is at least twice the diameter of a coating of the one of the optical fibers. An exit point of each channel is narrower than the insertion point and is configured to position the bare fiber end of the optical fiber in the particular arrangement within a desired tolerance relative to other optical fibers. The alignment fixture enables easy splice alignment and protection in the field.

Abstract: A hybrid optical fiber cable is disclosed for supplying both signals and power. The hybrid optical fiber cable includes an inner jacket and an outer jacket. Multiple power supply lines and optical fiber signal lines are disposed within the inner jacket. The optical fiber signal lines are used only for transmitting video, data, voice, and/or control signals through the hybrid optical fiber cable. A grounding portion is also provided between the inner jacket and the outer jacket in order to provide a return current path for the hybrid optical fiber cable.

Abstract: A multi-core optical fiber may include a cladding with a cross section having a central region and an outside diameter. Multiple transmission cores are arranged symmetrically within the central region of the cladding, extending parallel to a central axis of the multi-core optical fiber. Multiple alignment cores are arranged within the cladding, extending parallel to the central axis of the multi-core optical fiber and near the outside diameter of the cladding so that each of the multiple alignment cores are visible through a side view of the cladding. Ends of similarly configured multi-core optical fibers may be mated and aligned. Alignment cores of a first multi-core optical fiber may be aligned with alignment cores of a second multi-core optical fiber using a side view of the mating interface. Aligning the alignment cores causes multiple transmission cores with the multi-core optical fibers to also align.

Abstract: An approach for providing dedicated service in a passive optical network (PON) is described. A dedicated service generates a multi-wavelength optical signal comprising a plurality of sub-signals corresponding to carrier wavelengths, modulate the plurality of sub-signals simultaneously with a content signal and transmit the plurality of sub-signals to one or more respective subscribers over an optical distribution network.