Telecommunications assemblies and modules incorporating demateable fiber optic connection interfaces for coupling non-ferrulized optical fibers.

An optical fiber connection system includes a first and a second optical fiber, each with end portions that are terminated by a first and a second fiber optic connector, respectively. A fiber optic adapter connects the first and the second fiber optic connectors. A fiber alignment apparatus includes V-blocks and gel blocks. Each of the fiber optic connectors includes a connector housing and a sheath. The end portions of the optical fibers are positioned beyond distal ends of the respective connector housings. The sheath is slidably connected to the connector housing and slides between an extended configuration and a retracted configuration. The sheath covers the end portion of the respective optical fiber when the sheath is at the extended configuration and exposes the end portion when at the retracted configuration. The end portions of the optical fibers are cleaned when slid between the V-blocks and the gel blocks.

An optical fiber connection system includes a first and a second optical fiber, each with end portions that are terminated by a first and a second fiber optic connector, respectively. A fiber optic adapter connects the first and the second fiber optic connectors. A fiber alignment apparatus includes V-blocks and gel blocks. Each of the fiber optic connectors includes a connector housing and a sheath. The end portions of the optical fibers are positioned beyond distal ends of the respective connector housings. The sheath is slidably connected to the connector housing and slides between an extended configuration and a retracted configuration. The sheath covers the end portion of the respective optical fiber when the sheath is at the extended configuration and exposes the end portion when at the retracted configuration. The end portions of the optical fibers are cleaned when slid between the V-blocks and the gel blocks.

An example fiber control collar is provided. The fiber control collar includes a body, an opening, and a protrusion. The body includes a front surface and an opposing rear surface. The opening is formed in and extends through the body from the front surface to the rear surface. The protrusion extends from the front surface. The fiber control collar is configured to be positioned within a complementary hollow section of a connector backshell component to maintain fibers of a fiber optic cable away from pinch points during assembly of the fiber optic connector.

An optical module includes first and second optical fibers, and first and second optical fiber collimators, that are arranged in a light path. The first optical fiber collimator has a first core and a first cladding layer surrounding the first core. The second optical fiber collimator has a second core and a second cladding layer surrounding the second core. The first optical fiber has a third core. The second optical fiber has a fourth core. When the third core has a diameter smaller than the fourth core, a refractive-index difference between the first core and the first cladding layer is larger than that between the second core and the second cladding layer. When the third core has a core diameter larger than the fourth core, the refractive-index difference between the first core and the first cladding layer is smaller than that between the second core and the second cladding layer.

An optical connection structure includes a MCF, a first ferrule, a plurality of optical fibers, and a second ferrule. The MCF includes first cores and a first cladding. The first ferrule has a first inner hole and a first ferrule end surface. Each optical fiber optically connected to the MCF includes a second core and a second cladding. The second ferrule has a second inner hole housing tip parts of the optical fibers, and a second ferrule end surface. The second ferrule fixes the tip parts of the optical fibers in the second inner hole by an adhesive. The adhesive is packed in the second inner hole such that a surface of the adhesive is recessed from the second ferrule end surface into the second inner hole. A refractive-index matching material is applied in a space sealed by the first ferrule end surface and the second ferrule end surface.

An optical fiber alignment assembly may comprise an alignment fixture including a groove configured to engage first and second optical fiber ferrules, a first clamping mechanism configured to selectively apply a force on the first optical fiber ferrule to constrain motion of the first optical fiber ferrule within the groove, and a second clamping mechanism configured to selectively apply a force on the second optical fiber ferrule to constrain motion of the second optical fiber ferrule within the groove.

An optical fiber connector includes a housing configured to mate with a receptacle, a collar body that includes a fiber stub and a mechanical splice device, a backbone to retain the collar body within the housing, and a boot. The backbone includes at least one guide channel to facilitate wrapping strength members of an optical fiber cable around the backbone and a cable jacket clamping portion to clamp the cable jacket of the cable. The boot actuates the cable jacket clamping portion of the backbone upon attachment to the backbone.

The present disclosure relates to an optical fiber alignment device that has an alignment housing that includes first and second ends. The alignment housing defines a fiber insertion axis that extends through the alignment housing between the first and second ends. The alignment housing includes a fiber alignment region at an intermediate location between the first and second ends. First and second fiber alignment rods are positioned within the alignment housing. The first and second fiber alignment rods cooperate to define a fiber alignment groove that extends along the fiber insertion axis. The first and second fiber alignment rods each having rounded ends positioned at the first and second ends of the alignment housing.

A self-centering structure (300) for aligning optical fibers (308) desired to be optically coupled together is disclosed. The self-centering structure (300) including a body (310) having a first end (312) and a second end (314). The first end (312) defines a first opening (303) and the second end (314) defines a second opening (304). The self-centering structure (300) includes a plurality of groove structures (306) integrally formed in the body (310) of the self-centering structure for receiving the optical fibers (308) and a fiber alignment region (305) positioned at an intermediate location between the first and second ends (312, 314) to facilitate centering and alignment of the optical fibers (308). The self-centering structure (300) further includes a plurality of cantilever members (322) arranged and configured on opposing sides of the fiber alignment region (305). Each of the plurality of cantilever members (322) are aligned with a respective one of the plurality of groove structures (306). The plurality of cantilever members (322) include a first plurality of cantilever members (322a) adjacent the first end (312) of the self-centering structure (300) and a second plurality of cantilever members (322b) adjacent the second end (314) of the self-centering structure (300). The plurality of cantilever members (322) is flexible and configured for urging the optical fibers (308) into their respective groove structures (306).