Nano-particle based mode strippers for removing undesirable laser energy for laser systems. Nano-particle mode strippers having matched indices of refraction to the outer cladding remove cladding light converting it into heat. There are provided fibers having evanescent mode strippers having annular outer cores and claddings.

[Problem] To provide an optical connector, an optical connector connecting structure, and an optical packaging circuit, with which it is possible to, in high-density packaging of optical fibers, prevent spring force required for the connector from increasing and achieve size reduction.

[Solution] This optical connector is provided with: a first ferrule 110 having a first end surface 112 in which an optical fiber insertion hole 114 into which an optical fiber 30 is inserted and a pair of guide pin insertion holes 116 into which a pair of guide pins 40 are inserted are formed; and a plate-shaped lens holding member 200 bonded to the first end surface 112 of the first ferrule 110 via a refractive index matching adhesive layer. The lens holding member 200 has a member main body 210 and a GRIN lens 250 provided on the member main body 210, and the GRIN lens 250 is optically coupled to the optical fiber 30.

An optical module includes a housing having an upper cover and a lower cover; a substrate having a circuit device mounted on its first surface; a heat dissipation member configured to be in contact with the circuit device mounted on the substrate; and at least one inner case having stiffness, wherein the upper cover is disposed facing the first surface of the substrate, and the lower cover is disposed facing a second surface of the substrate, and the inner case is disposed so as to press the substrate from the second surface of the substrate toward the upper cover.

Disclosed are structures and methods for active optic cable (AOC) assembly having improved thermal characteristics. In one embodiment, an AOC assembly includes a fiber optic cable having a first end attached to a connector with a thermal insert attached to the housing for dissipating heat from the connector. The AOC assembly can dissipate a suitable heat transfer rate from the active components of the connector such as dissipating a heat transfer rate of 0.75 Watts or greater from the connector. In one embodiment, the thermal insert is at least partially disposed under the boot of the connector. In another embodiment, at least one component of the connector has a plurality of fins. Other AOC assemblies may include a connector having a pull tab for dissipating heat from the assembly.

An optical connector assembly includes a housing having a mating end shaped to receive an input connector. The housing also has an output end opposite the mating end. A ferrule is disposed within the housing and at least a portion of an optical cable is secured within the ferrule. A plug body is disposed within the housing and in thermal contact with the ferrule and having a plug-body front face. A thermal pad may include a thermal-pad rear face and a thermal-pad front face. The thermal-pad rear face may contact the plug-body front face, and the thermal-pad front face may contact the input connector when the input connector is mated with the optical connector assembly.

An optical system is provided that includes a conduit fitting, a first connector, a first conduit, a first ferrule and a first nut. The conduit fitting includes a receptacle. The first connector is disposed within the receptacle. The first connector includes a first bore, a first counterbore and a first port radially outboard of the first bore. The first conduit includes a first optics line and a first fluid passage. The first conduit projects longitudinally into the first counterbore and is attached to the first connector. The first optics line projects longitudinally into the first bore. The first fluid passage is fluidly coupled with the first port. The first ferrule circumscribes the first connector. The first nut is threaded onto the conduit fitting and is configured to wedge the first ferrule radially between the first connector and the conduit fitting.

A heat dissipation structure of an optical transceiver includes a housing, a frame, a uniform heat component, an outer fin and an elastic clamping component. The housing has an accommodating space, extends along a lengthwise direction, and is divided into an exposed section and a hidden section in the lengthwise direction. The part of the uniform heat component corresponding to the hidden section is embedded in the accommodating space. The heat conductive block is disposed in the accommodating space and is in thermal contact with the uniform heat component. The outer fin is disposed at the exposed section and is in thermal contact with the uniform heat component. The elastic clamping component clamps both sides of the outer fin in a widthwise direction, and has a pushing member in a lengthwise direction, wherein the pushing member pushes the frame to move the outer fin inward along the lengthwise direction.

Disclosed in an optical connector component including: a housing that accommodates an end portion of an optical transmission line; a shutter having a reflecting portion that reflects an optical signal outputted from the optical transmission line and being able to open and close inside the housing; and a light-absorbing member that is heat resistant compared to the housing and is irradiated the optical signal reflected by the reflecting portion.

There are provided high power laser connectors and couplers and methods that are capable of providing high laser power without the need for active cooling to remote, harsh and difficult to access locations and under difficult and harsh conditions and to manage and mitigate the adverse effects of back reflections.

Embodiments include an optical fiber cable comprising a length extending between a first end and a second end, a central cooling tube, a plurality of optical fibers disposed radially around the cooling tube, each optical fiber comprising a fiber core and a cladding disposed around the fiber core, an outer protective cover, and an inner thermal filler disposed between the outer protective cover and the central cooling tube and surrounding each of the optical fibers, wherein each of the central cooling tube, the outer protective cover, the inner thermal filler, and the plurality of optical fibers extend the length of the cable. Various systems and methods for removing imperfections from individual optical fibers and for distributing power across long distances using the optical fiber cable are also provided.