An optical fiber connector includes a main body unit having a guiding groove, and two position limiting portions that respectively protrude from two walls respectively defining two sides of the guiding groove toward each other, a sleeve unit, and a coupling unit including two coupling members each having two first protruding block portions that respectively protrude away from each other. The sleeve unit is configured to be movable rearwardly on the main body unit to press the first protruding block portions toward each other, so as to allow the first protruding block portions to pass past the position limiting portions, thereby allowing for movement of each of the coupling members between a non-working position and a working position.

The fiber optic adapter may include a main body having a first end portion and a second end portion spaced apart along a length direction, the first end portion having at least a first port configured for receiving at least one ferrule, the second end portion having at least a second port configured for receiving a fiber optic connector; and a sleeve holder provided within the main body and between the first end portion and second end portion such that the first port is in communication with the second port to establish an optical connection. The first port has holding elements to define a receiving space to receive the ferrule, and the receiving space is configured to be expanded when inserting the at least one ferrule into the first port. The fiber optic adapter may receive a ferrule without the need of an outer housing or a spring.

Aspects and techniques of the present disclosure relate to an enclosure (10) including a housing, a volume of sealant (66) that defines a port (28) in communication with an interior of the housing, and a fiber optic connection module (32) including a sleeve that mounts within the port with the volume of sealant forming a seal about an exterior of the sleeve. The sleeve includes an inner end (34) adjacent the interior of the housing and an outer end (36) outside the housing. The fiber optic connection module also includes a demateable fiber optic connection interface adjacent the outer end of the sleeve. The demateable fiber optic connection interface includes a fiber optic connector. Other aspects of the present disclosure relate to fiber optic connection modules having features that make such modules suitable to be mounted within a port defined by a volume of sealant.

An optical sub-assembly includes an optical adapter with a main body that defines an internal chamber disposed between a front side and a rear side. The internal chamber includes a rear internal chamber with a sleeve section and a rear body section. A connector is disposed within the rear internal chamber. The connector includes a ferrule, a ferrule holder and a rear body. A sleeve holding the ferrule and an optical fiber extending into the ferrule are included. The ferrule extends from the ferrule holder and the sleeve is disposed over the ferrule with an interference fit such that the ferrule, ferrule holder and sleeve form an integrated part. The sleeve is disposed in the sleeve section of the rear internal chamber of the main body with an interference fit such that the ferrule, ferrule holder, sleeve and rear body position and align the optical fiber within the optical adapter.

Designs of pluggable optical passive devices are described. An optical adapter comprises a housing including at least one socket to receive an optical fiber cable, a ferrule to allow a glass core to go through the ferrule, after the optical fiber cable is cut to expose the glass core therein, a ferrule holder integrating the ferrule with the optical fiber cable, a sleeve provided to secure the ferrule to form an integrated part, a rear body mounted on the optical fiber cable, and a locking mechanism in the socket to receive and engage the integrated part, where the rear body is pushed in to secure the integrated part in the socket. Optionally, a ring (e.g., metal) can be used to further integrate the sleeve with the ferrule holder

A field-assembly optical connector includes an inner sleeve module, a connector frame housing the inner sleeve module, and a cable boot coupled to the inner sleeve module to protect a sheath of an optical fiber. The inner sleeve module includes a sleeve body having a sleeve, an intermediate connector fitted on the sleeve body and having protrusions, a spring fitted on a threaded portion of the sleeve body, a fixing ring screwed to the threaded portion of the sleeve body, and a ferrule stub inserted into the sleeve body through the fixing ring. A cable boot is fixed to the sleeve body and is coupled to the intermediate connector to be moveable within a predetermined range.

An optical fiber connector includes a housing unit and an operating unit. The housing unit includes a resilient retaining arm member. The operating unit includes a pivot seat, a hook member pivotally connected to the pivot seat, rotatable relative to the pivot seat, and having a front end that abuts against the resilient retaining arm member, and an operating rod pivotally connected to a rear end of the hook member. When the operating rod is pulled rearwardly, the hook member is driven to pivotally rotate relative to the pivot seat such that, the hook member presses and moves the rear end of the resilient retaining arm member, so as to deform the resilient retaining arm member, thereby allowing for removal of an adapter from the optical fiber connector.

There is provided an optical assembly (100) comprising an optical fiber arrangement (220, 230) and a lens arrangement (120). The lens arrangement (120) is spatially disposed relative to the fiber arrangement (220, 230) so as to be capable of providing an axial substantially collimated beam of radiation in response to receiving radiation from the optical fiber arrangement (220, 230) and capable of providing a focused beam of radiation to the optical fiber arrangement (220, 330) in response to receiving substantially collimated radiation to the lens arrangement (120). The assembly (100) further comprises a configuration of elements (110, 130, 200, 260) for spatially disposing the optical fiber arrangement (220, 230) relative to the lens arrangement (120). The configuration of elements (110, 130, 200, 260) provides for independent adjustment of relative lateral position between the optical fiber arrangement (220, 230) and the lens arrangement (120) in relation to axial position of the optical fiber arrangement (220, 230) relative to the lens arrangement (120). Such independent adjustment assists in fabrication of the assembly (100).

An optical connector includes a sleeve that positions a front end portion of a first ferrule and a front end portion of a second ferrule so as to face each other on the same axis, a first connection retaining member and a second connection retaining member that maintain a state in which the front end portions of the first and second ferrules contact each other and press against each other, and a coil spring that generates a force with which the front end portions of the first and second ferrules press against each other. Optical fiber cables can be connected to each other by containing the first ferrule and the second ferrule, which are attached to the sleeve, respectively in the first connection retaining member and the second connection retaining member and by coupling the first connection retaining member and the second connection retaining member to each other.

An optical connection includes a plurality of ferrules, an optical contact to allow transfer of light, a mechanical contact to allow torque transfer from the optical connection, and a rotational self-alignment structure to allow optical fibers of different optical connectors to self-rotate into rotational self-alignment upon action of connecting, wherein the ferrules are aligned and engage the torque transfer. The rotational self-alignment structure can be a tooth configuration, a helical thread configuration, a ferrule guide configuration, a spring sleeve configuration, derivatives thereof and combinations therefrom.