A method of manufacturing an optical connector ferrule includes a step of forming the optical connector ferrule by introducing a resin into a die. The optical connector ferrule includes one end surface and the other end surface, a pair of side surfaces, a front surface and a back surface, an introduction port that introduces a plurality of optical fibers in a bundle, a plurality of optical fiber holding holes that penetrate from the introduction port to the one end surface and hold the plurality of optical fibers, respectively, and a window hole that penetrates from the surface to the introduction port. A distance between a center of a gate and the front surface is less than a distance between the center of the gate and the back surface.

A composite structure includes a base and an auxiliary portion of dissimilar materials. The auxiliary portion is shaped by stamping. As the auxiliary portion is stamped, it interlocks with the base, and at the same time forming a desired structured feature on the auxiliary portion, such as a structured reflective surface, an alignment feature, etc. With this approach, relatively less critical structured features can be shaped on the bulk of the base with less effort to maintain a relatively larger tolerance, while the relatively more critical structured features on the auxiliary portion are more precisely shaped with further considerations to define dimensions, geometries and/or finishes at relatively smaller tolerances. The auxiliary portion may include a composite structure of two dissimilar materials associated with different properties for stamping different structured features.

Embodiments of the invention include an optical fiber cable. The optical fiber cable includes at least one multi-fiber unit tube. The multi-fiber unit tube is substantially circular and dimensioned to receive a plurality of optical fibers. The optical fiber cable also includes at least one rollable optical fiber ribbon comprising a plurality of optical fibers positioned within the at least one multi-fiber unit tube. The plurality of optical fibers in the at least one rollable optical fiber ribbon are rolled in such a way that the at least one rollable optical fiber ribbon is formed in a variable shape. The optical fiber cable also includes a jacket surrounding the at least one multi-fiber unit tube.

An optical fiber structure, includes a substrate, provided with a holding slot; an optical fiber cable, partially arranged in the holding slot; and an isolator, comprising a positioning structure arranged in the holding slot and aligned with an end surface of the optical fiber cable. The present disclosure can not only improve the optical coupling accuracy but also make the optical fiber structure more compact by pasting the isolator in the holding slot and directly aligning with the end surface of the optical fiber cable, which provides a basis for the product to be miniaturized and integrated. The isolator includes a positioning structure, and the isolator has a unidirectional transmission characteristic, therefore, the positioning structure greatly reduces the assembly difficulty and improves the assembly efficiency.

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.

A composite structure includes a base and an auxiliary portion of dissimilar materials. The auxiliary portion is shaped by stamping. As the auxiliary portion is stamped, it interlocks with the base, and at the same time forming a desired structured feature on the auxiliary portion, such as a structured reflective surface, an alignment feature, etc. With this approach, relatively less critical structured features can be shaped on the bulk of the base with less effort to maintain a relatively larger tolerance, while the relatively more critical structured features on the auxiliary portion are more precisely shaped with further considerations to define dimensions, geometries and/or finishes at relatively smaller tolerances. The auxiliary portion may include a composite structure of two dissimilar materials associated with different properties for stamping different structured features.

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.

An easily assembled SC connector, comprising a tail sleeve, an outer frame sleeve, a fixing piece, a limiting piece, a tail pipe, a stop ring, a press-inserting core tail shank, a spring, a metal ring, a ceramic inserting core, and a dustproof cap. During assembling, the tail pipe is sleeved in the tail sleeve in an interference fit, then the metal ring is fixedly connected to the press-inserting core tail shank by means of injection molding, and the stop ring and the limiting piece are fixed by means of injection molding. The injection molding has a simple production process and low costs. The whole assembly process is simple, and automatic assembly can be achieved. In addition, the present application only needs to directly extend a needle for dispensing glue into the center of the press-inserting core tail shank.

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 herein describe attaching (or bonding) alignment parts to a photonic die so that these alignment parts can then be used to passively align a FAU to the photonic die. In one embodiment, the alignment part (or parts) is aligned to a photonic die using a mounting FAU. The mounting FAU (along with the mated alignment parts) can then be actively aligned to the photonic die. When aligned, the alignment parts can be bonded (e.g., using cured epoxy) to the photonic die. The mounting FAU can then be lifted off, leaving the alignment parts attached to the photonic die. Later, a final product FAU (which may have a different shape than the mounting FAU) can then be passively aligned to the photonic die using the previously mounted alignment part or parts.