Optical fiber hole forming pins configured to form optical fiber holding holes each have a first portion located adjacent to a first end surface and a second portion located adjacent to a second end surface and larger in diameter than the first portion. At least one of the plurality of optical fiber hole forming pins is different from the other optical fiber hole forming pins in position, in a first direction, of a step portion located at a boundary between the first portion configured to form a small diameter portion of each of the optical fiber holding holes and the second portion configured to form a large diameter portion of each of the optical fiber holding holes.

A fiber array device configured to secure and align one or more optical fiber bundles as part of a main body using a fixing material. The fixing material is light cured or room temperature cured. Main body forms an angle from a first direction along a second direction, and a recess the optical bundles are laid within and in which the fixing material is applied. Each individual optical fiber is laid within a groove formed in a lid, the base portion or both the lid and the base portion. The fiber array device is secured to a printed circuit board to form a communication path between the optical fiber and electronics of the board.

A method and system for affixing multi-core fiber (MCF) within a ferrule includes a UV light source and a light guide. MCFs are placed into epoxy filled holders, e.g., channels or v-grooves, of a ferrule. A first MCF in a first holder is clocked to orient its cores to a desired position. The light source is activated, and the light from the light guide is launched into an outer layer of the first MCF, like the cladding layer or a dedicated light carrying layer. The light in the outer layer will stay in the outer layer until it reaches the portion of the first MCF in contact with the epoxy, even if the light is launched from the far end of the fiber remote from the holder. At the holder, the light will leak out due to the similarity in the index of refraction. The leaking light will at least partially cure the epoxy to affix the first MCF within the first holder. The process may then be repeated for the remaining MCFs, so that each MCF may be clocked and affixed selectively rather than collectively.

An optical fiber cable is disclosed. The optical fiber cable comprises an optical cable including optical fibers and a sheath where the optical fibers are arranged in a first array, and a holder. The optical fibers have first extending parts that extend outside from the sheath, and second extending parts that extends from the first extending parts to the tips of the optical fibers. The holder comprises a first portion that houses therein transition portions where the first extending parts transitions from the first array to a second array, and a second portion that holds parts of the first extending parts in the second array. The second portion is configured to hold the first extending parts in a manner such that a mutual positional relationship among the second extending parts keeps the same state as a mutual positional relationship among the first extending parts at the second portion.

Embodiments of the present disclosure are directed to hybrid optical fiber ferrules and methods of fabricating the same. In one embodiment, an optical fiber ferrule includes a glass faceplate, a plastic body molded about the glass faceplate, and at least one fiber through-hole extending through the plastic body. In another embodiment, a method of fabricating an optical fiber ferrule includes disposing a glass faceplate within a die comprising at least one fiber die pin, an injecting the die with plastic to form a plastic body such that the glass faceplate is embedded within the plastic body, wherein the at least one fiber die pin defines at least one fiber through-hole. Other materials with suitable coefficients of thermal expansion may be used for the faceplates of the fiber optic ferrules according to the concepts disclosed.

A hermetic optical subassembly includes an optical bench having a mirror directing optical signals to/from an optical waveguide, a carrier supporting a photonic device, and an intermediate optical bench having a mirror directing optical signals between the photonic device and the optical bench. The optical bench and the intermediate optical bench optically aligns the photonic device to the waveguide along a desired optical path. In one embodiment, the photonic device is an edge emitting laser (EML). The mirror of the optical bench may be passively aligned with the mirror of the intermediate optical bench. The assembled components are hermetically sealed. The body of the optical benches are preferably formed by stamping a malleable metal material to form precise geometries and surface features. In a further aspect, the hermetic optical subassembly integrates a multiplexer/demultiplexer, for directing optical signals between a single optical fiber and a plurality of photonic devices.

A core-stiffed composite structure includes a plurality of bonded layers forming the core-stiffened composite structure, a fiber optic conductor embedded between two of the plurality of bonded layers, the fiber optic conductor including a terminal end, and a protective box embedded in the core-stiffened composite structure and bonded to one or more of the plurality of bonded layers, wherein the terminal end of the fiber optic conductor projects into the protective box.

A photodetector includes: a substrate; an optical fiber disposed on the substrate; and a photodetection element fixed to the substrate, and that detects scattered light of light guided by the optical fiber. The photodetector further includes: a first fixing member and a second fixing member that fix the optical fiber to the substrate.

A hermetic optical subassembly includes an optical bench having a mirror directing optical signals to/from an optical waveguide, a carrier supporting a photonic device, and an intermediate optical bench having a mirror directing optical signals between the photonic device and the optical bench. The optical bench and the intermediate optical bench optically aligns the photonic device to the waveguide along a desired optical path. In one embodiment, the photonic device is an edge emitting laser (EML). The mirror of the optical bench may be passively aligned with the mirror of the intermediate optical bench. The assembled components are hermetically sealed. The body of the optical benches are preferably formed by stamping a malleable metal material to form precise geometries and surface features. In a further aspect, the hermetic optical subassembly integrates a multiplexer/demultiplexer, for directing optical signals between a single optical fiber and a plurality of photonic devices.

Embodiments of the present disclosure are directed to hybrid optical fiber ferrules and methods of fabricating the same. In one embodiment, an optical fiber ferrule includes a glass faceplate, a plastic body molded about the glass faceplate, and at least one fiber through-hole extending through the plastic body. In another embodiment, a method of fabricating an optical fiber ferrule includes disposing a glass faceplate within a die comprising at least one fiber die pin, an injecting the die with plastic to form a plastic body such that the glass faceplate is embedded within the plastic body, wherein the at least one fiber die pin defines at least one fiber through-hole. Other materials with suitable coefficients of thermal expansion may be used for the faceplates of the fiber optic ferrules according to the concepts disclosed.