The present disclosure provides a method for stacking a plurality of optical fibre ribbons in an optical fibre cable. The method includes a step of arranging a plurality of optical fibre ribbon stacks in a hexagonal arrangement in the optical fibre cable. The method may further include stacking the plurality of optical fibre ribbons to form an optical fibre ribbon stack such that the optical fibre ribbon stack may have a parallelogram shape. Each optical fibre ribbon is placed at an offset from adjacent optical fibre ribbon. The optical fibre ribbon stack may have a stack height. In addition, each optical fibre ribbon of the plurality of optical fibre ribbons may have a ribbon height. The hexagonal arrangement may have the packaging density greater than 80%.

A passively aligned fan-out apparatus for a multicore fiber (MCF) includes a fan-out assembly that comprises a fan-out substrate, small-clad fibers (SCFs) supported in SCF V-grooves of the fan-out substrate, and alignment rods disposed outboard alignment V-grooves of the fan-out substrate. The SCFs have a distal-end pitch P2D at a distal end of the fan-out substrate greater than the proximal-end pitch P2P of the SCFs at a proximal end of the fan-out substrate. An MCF assembly and/or single mode fiber (SMF) assembly may also be provided as part of the fan-out apparatus.

Embodiments disclosed herein include optical packages. In an embodiment, an optical package comprises a package substrate, a compute die over the package substrate, and an optics die over the package substrate. In an embodiment, the optics die comprises grating couplers. In an embodiment, an optical connector for optically coupling optical fibers to the grating couplers is provided. In an embodiment, the optical connector comprises a fiber array unit (FAU), where the FAU has a turn. In an embodiment, the optical connector further comprises a fiber shuffler, where the fiber shuffler comprises a first V-groove with a first depth and a second V-groove with a second depth that is greater than the first depth. In an embodiment, the optical connector further comprises a ferrule.

Optical fibers of a multi-fiber cable are grouped into connection units. The distal ends of the fibers of each connection unit are terminated at a connection unit body that attaches to a tapering cable core formed of longer ones of the connection units. After deployment of the cable, two or more connection units can be stacked together to form a connector or inserted into a connector shell. Prior to deployment of the cable, at least some of the connection units are spaced from each other along the cable. For example, individual connection units may be disposed at one end of the tapering cable core and stacks of connection units may be disposed at the other end of the tapering cable core.

Embodiments provide an optical coupling apparatus, an optical module, and a communications device. In those embodiments, the optical coupling apparatus includes: an optical fiber component, including a plurality of optical fibers and an optical fiber fixing block. The plurality of optical fibers are fixed to the optical fiber fixing block. A first end face is disposed on the optical fiber fixing block. At least some of the optical fibers include plug ends which protrude from the first end face. An optical write waveguide block, including a main body and a plurality of waveguides disposed in the main body. A second end face is disposed on the main body, coupling holes that are in a one-to-one correspondence with the plug ends are disposed on the second end face in a recessed manner, and the coupling holes are formed when ends of the waveguides are recessed from the second end face.

Fiber array spacers, optical fiber assemblies, optical assemblies, and methods for fabricating optical assemblies are disclosed. In one embodiment, an optical fiber assembly includes a fiber array spacer and a fiber ribbon having an array of optical fibers. The fiber array spacer has an array of spacer fibers, wherein individual spacer fibers of the array of spacer fibers are bonded to one another, and a diameter of the individual spacer fibers determines a height of the fiber array spacer. Each optical fiber of the array of optical fibers has an glass portion. The glass portion of each optical fiber is bonded to the fiber array spacer such that a longitudinal axis of the individual spacer fibers is transverse to a longitudinal axis of individual optical fibers of the fiber ribbon.

An optical-fiber holding component disposed in a ferrule holding a plurality of optical fibers, which respectively have at least one core in a region shifted from a region on a center axis and are arranged in a first direction intersecting with the center axis line, is disclosed.

The optical-fiber holding component comprises a holding part defining a position of each of coating removed portions in a plane perpendicular to the center axis and holding the coating removed portions, each of the coating removed portions being obtained by removing a resin coating by a predetermined length from a tip end of each of the optical fibers; and a fixing part arranged side by side with the holding part in a second direction along the center axis, resin coated portions of the optical fibers being fixed to the fixing part.

A stackable adapter having opposing ports configured to accept differing fiber optic connectors along a longitudinal axis. The stackable adapter is formed from opposing partially open sidewalls having a recess and a protrusion opposite one another near a top edge and bottom edge. Mating two stackable adapters forms a stackable adapter assembly with stackable outer sidewalls for reducing the width of an array of two stackable adapters by at least one-third over placing two standard adapter side-by-side in the panel.

The present disclosure provides an optical fiber circuit board and a manufacturing method thereof, a multilayer optical fiber circuit board, an optical transmission device, a photo-electric hybrid circuit board, and a signal transmission device. The optical fiber circuit board includes at least two substrates stacked and spaced apart, at least one optical fiber assembly and a bonding layer. Each of the at least one optical fiber assembly is disposed between each adjacent two of the at least two substrates. Each of the at least one optical fiber assembly includes at least one optical fiber. The bonding layer is filled in a remaining space between adjacent two of the at least two substrates apart from a corresponding optical fiber assembly of the at least one optical fiber assembly to fix each of the at least one optical fiber relative to the adjacent two substrates.

Fiber array spacers, optical fiber assemblies, optical assemblies, and methods for fabricating optical assemblies are disclosed. In one embodiment, an optical fiber assembly includes a fiber array spacer and a fiber ribbon having an array of optical fibers. The fiber array spacer has an array of spacer fibers, wherein individual spacer fibers of the array of spacer fibers are bonded to one another, and a diameter of the individual spacer fibers determines a height of the fiber array spacer. Each optical fiber of the array of optical fibers has an glass portion. The glass portion of each optical fiber is bonded to the fiber array spacer such that a longitudinal axis of the individual spacer fibers is transverse to a longitudinal axis of individual optical fibers of the fiber ribbon.