An optical receptacle includes: a first optical fiber; a second optical fiber connected to the first optical fiber by fusion splice; a ferrule including a fiber hole that holds an end of the first optical fiber; and a housing portion that houses therein: the ferrule, the first optical fiber, and a first portion of the second optical fiber. A fusion splice portion between the first optical fiber and the second optical fiber is disposed outside of the ferrule and within the housing portion.

Techniques for aligning each of a plurality of optical fibers for coupling to a photonic integrated circuit (PIC). Transmission is detected from each respective optical fiber to the PIC using a probe, and the respective optical fiber is aligned based on the detected transmission. Each of the plurality of optical fibers is coupled to the PIC using at least one of: (i) laser splicing, (ii) laser spot welding, or (iii) arc welding,

Techniques for aligning each of a plurality of optical fibers for coupling to a photonic integrated circuit (PIC). Transmission is detected from each respective optical fiber to the PIC using a probe, and the respective optical fiber is aligned based on the detected transmission. Each of the plurality of optical fibers is coupled to the PIC using at least one of: (i) laser splicing, (ii) laser spot welding, or (iii) arc welding.

A multi-fiber splice protector includes a strength member having at least one wall arranged in a tubular shape with a longitudinal opening extending through the wall to permit passage of a coated optical fiber into an inner cavity, with a thermoplastic hotmelt material arranged in the inner cavity. The longitudinal opening has a first width between 1 and 2 times the diameter of one coated optical fiber, while the inner cavity has a second width that is significantly greater than the first width to permit fusion spliced optical fibers to be not exclusively arranged in a 1-D array in the inner cavity. A fiber optic cable assembly including a multi-fiber splice protector with thermoplastic hotmelt material encapsulating fusion splice joints is further provided. Additionally provided is a method for forming a fiber optic cable assembly.

Techniques for aligning each of a plurality of optical fibers for coupling to a photonic integrated circuit (PIC). Transmission is detected from each respective optical fiber to the PIC using a probe, and the respective optical fiber is aligned based on the detected transmission. Each of the plurality of optical fibers is coupled to the PIC using at least one of: (i) laser splicing, (ii) laser spot welding, or (iii) arc welding.

An optical cable fixture includes a base and a cover. The base defines a receiving groove penetrating opposite sides of the base. The receiving groove includes a first receiving portion and a second receiving portion. The first receiving portion receives an optical cable. The second receiving portion receives first optical fibers extending from the optical cable. The cover covers the base and fixes the optical cable and the first optical fibers.

An optical receptacle includes: a first optical fiber; a second optical fiber connected to the first optical fiber by fusion splice; a ferrule including a fiber hole that holds an end of the first optical fiber; and a housing portion that houses therein: the ferrule, the first optical fiber, and a first portion of the second optical fiber. A fusion splice portion between the first optical fiber and the second optical fiber is disposed outside of the ferrule and within the housing portion.

An optical cable fixture includes a base and a cover. The base defines a receiving groove penetrating opposite sides of the base. The receiving groove includes a first receiving portion and a second receiving portion. The first receiving portion receives an optical cable. The second receiving portion receives first optical fibers extending from the optical cable. The cover covers the base and fixes the optical cable and the first optical fibers.

A multi-fiber splice protector includes a strength member having at least one wall arranged in a tubular shape with a longitudinal opening extending through the wall to permit passage of a coated optical fiber into an inner cavity, with a thermoplastic hotmelt material arranged in the inner cavity. The longitudinal opening has a first width between 1 and 2 times the diameter of one coated optical fiber, while the inner cavity has a second width that is significantly greater than the first width to permit fusion spliced optical fibers to be not exclusively arranged in a 1-D array in the inner cavity. A fiber optic cable assembly including a multi-fiber splice protector with thermoplastic hotmelt material encapsulating fusion splice joints is further provided. Additionally provided is a method for forming a fiber optic cable assembly.

A fiber optic mechanical splice for splicing input and output optical fiber. The splice includes a capillary tube for enclosing fiber ends of the input and output optical fiber cables, two metallic cable-splice bridging flanges for insertion onto the input and output optical fiber cable jackets, a first metallic crimping tube, a second metallic crimping tube, a first protection tube, a second protection tube, and polyurethane tape. The fibers extending from the input and output optical fibers can be frustoconically inserted into a corresponding bridging flange. The crimping tubes enclose corresponding cable ends and bridging flanges. The first protection tube encloses the crimping tubes, while the second protection tube encloses the first protection tube and the tape is disposed over the second protection tube, the bridging flanges, and the crimping tubes.