Fiber optic connectors, cable assemblies and methods for making the same are disclosed. In one embodiment, the optical connector comprises a housing and a ferrule. The housing comprises a longitudinal passageway between a rear end and a front end, and, a part of the rear portion of the housing comprises a round cross-section and a part of the front portion of the housing comprises a non-round cross-section with a transition region disposed between the rear portion and the front portion.

An optical connector-equipped fiber connection structure according to an embodiment includes at least three groups including two or more optical fibers adjacent to each other. In the groups, two or more of the optical fibers extend from a first multi-core connector to a second multi-core connector without intersecting with each other. Optical fibers of two groups in the at least three groups intersect with each other in a midway point going from the first multi-core connector to the second multi-core connector. Optical fibers of groups other than the two groups extend from the first multi-core connector to the second multi-core connector without intersecting with the other optical fibers extending from the first multi-core connector.

Multiports having connection ports with securing features that cooperate with flexures and methods for making the same are disclosed. In one embodiment, a multiport comprises a shell, at least one connection port, at least one flexure and at least one securing feature. The at least one connection port comprises an optical connector opening and a connection port passageway, and the at least one flexure is associated with the at least one connection port. The at least one securing feature is associated with the at least one connection port, where the at least one securing feature cooperates with the at least one flexure.

A hardened fiber optic adapter that may include a body portion having a first end portion that is configured to receive a hardened fiber optic connector and a second end portion that may be located opposite to the first end portion, a flexible fiber cable lead portion that may include an optical fiber cable and a protection tube portion that may be configured to surround the optical fiber cable, and an adapter subassembly portion that may be configured to be coupled with a preterminated end of the optical fiber cable at a first end portion of the flexible fiber cable lead. A second end portion of the flexible fiber cable lead portion may be configured to be coupled with a drop terminal such that the adapter is permitted to be moved relative to the drop terminal to a predetermined connection orientation that is configured to allow the adapter to be connected to a hardened fiber optic connector.

A remote indicator system comprising a housing and a display unit located remotely from the housing. The housing comprises a first light source and a first end of an end-emitting fibre optic cable. The display unit comprises a second end of the fibre optic cable. The housing includes manual switching means configurable to allow light from the first light source to pass into the first end of the optical fibre cable and further configurable to prevent light from the first light source from passing into the first end of the optical fibre cable.

Fiber optic connectors, cable assemblies and methods for making the same are disclosed. In one embodiment, the optical connector comprises a housing and a multifiber ferrule. The housing comprises a longitudinal passageway between a rear end and a front end, and a rear portion of the housing comprises a keying portion and at least one locking feature integrally formed in the rear portion of the housing.

Provided is a medical observation system capable of preventing disconnection of metal cables without increasing the thickness of a braided shield wire. The medical observation system includes a transmission cable including: an optical cable having one or more optical fiber cores; a plurality of metal cables arranged around the optical cable; and a tension member made of a high-strength fiber, and disposed in parallel with an extending direction of the optical cable.

Fiber optic connectors, cable assemblies and methods for making the same are disclosed. In one embodiment, the optical connector comprises a housing and a ferrule. The housing comprises a longitudinal passageway between a rear end and a front end, and, a part of the rear portion of the housing comprises a round cross-section and a part of the front portion of the housing comprises a non-round cross-section with a transition region disposed between the rear portion and the front portion.

A housing structure includes: an optical cable including optical fibers; connector units branching off from the optical cable; and a housing body that houses the connector units. Each of the connector units includes: a first tube through which the optical fibers pass; second tubes through each of which the optical fibers branching off from the first tube pass; and a connector group constituted by optical connectors that are each disposed at an end part of each of the second tubes. The connector group of each of the connector units is disposed at a different position in a length direction from the connector group of any other one of the connector units. The first tube of each of the connector units other than a first connector unit that is shortest among the connector units overlaps in the length direction the connector group of the first connector unit.

Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) distributed acoustic sensing (DAS) systems, methods, and structures that advantageously provide the localization of utility poles along a route of fiber optic cable.