Optical connection systems, optical cable assemblies, and optical receptacle assemblies for optically coupling multiple optical fibers are disclosed. In one embodiment, an optical receptacle assembly includes a receptacle housing, wherein the receptacle housing defines a receptacle passage, and an adapter sleeve disposed within the receptacle passage of the receptacle housing. The adapter sleeve includes a sleeve passage and a sleeve inner threaded surface. The optical receptacle assembly further includes an adapter housing disposed within the receptacle passage having a first connector opening and a second connector opening, a first receptacle optical connector and a second receptacle optical connector. The first receptacle optical connector is disposed within the first connector opening of the adapter housing and the second receptacle optical connector is disposed within the second connector opening of the adapter housing.

A connection system may include fiber optic connectors and an optical receptacle into which the connectors are plugged. The fiber optic connectors are constructed so that the width of the connectors is small. Eight fiber optic connectors can be received in an opening of a QSFP style transceiver.

Fiber optic connectors, including SC and MPO connectors that include a strain relief boot operably coupled with a release mechanism for releasing the connector from an adapter or other termination device or receptacle. The strain relief boot can be operably coupled to move axially together with the outer housing of the connector.

An optical connector holding two or more LC-type optical ferrules is provided. The optical connector includes an outer body, an inner front body accommodating the two or more LC-type optical ferrules, ferrule springs for urging the optical ferrules towards a mating connection, and a back body for supporting the ferrule springs. A removable inner front body for polarity change is disclosed. A multi-purpose rotatable boot assembly for polarity change is disclosed. The multi-purpose boot assembly can be pushed and pulled to insert and remove the micro connector from an adapter receptacle.

In a connector for terminating a cable, a connector housing has a rear end portion including a first shoulder. An inner connector assembly is received in the connector housing. The inner connector assembly includes at least one ferrule exposed and a back body with a back post. At least one strength member is secured to the back post. A rear bracing member is received in the connector housing. The rear bracing member has a front end portion and a rear end portion spaced apart along the longitudinal axis. The front end portion of the rear bracing member is configured to engage the back body and the rear end portion of the rear bracing member is configured to engage the first shoulder of the connector housing such that the rear bracing member substantially braces the back body against rearward displacement along the longitudinal axis relative to the connector housing.

A LC type connector assembly with a push/pull cable boot integrally formed with a protrusion that accepts an adapter release for releasing a fiber optic connector from an adapter port.

An optical connector includes a first sub-assembly that is factory-installed to a first end of an optical fiber and a second sub-assembly that is field-installed to the first end of the optical fiber. The optical fiber and first sub-assembly can be routed through a structure (e.g., a building) prior to installation of the second sub-assembly. The second sub-assembly interlocks with the first sub-assembly to inhibit relative axial movement therebetween. Example first sub-assemblies include a ferrule, a hub, and a strain-relief sleeve that mount to an optical fiber. Example second sub-assemblies include a mounting block; and an outer connector housing forming a plug portion.

Example fiber optic connector systems have rugged, robust designs that are environmentally sealed and that are relatively easy to install and uninstall in the field. Some connector systems can be configured in the field to be compatible with different styles of fiber optic adapters. Some connectors include a first seal (90) on a release sleeve; and a second seal (88) between the release sleeve and a connector body. Other connectors include a seal (139) and a flexible latch (136) on a connector. Other connectors include a protective structure (228, 328, 428) that mounts over the fiber optic connector. Other connectors include a protective outer shell (528, 860) and a sealing and attachment insert (570, 570A, 876). Other connectors include a protective outer shell (728) and a fastener (780).

A connector for optically connecting an optical fiber to an optical fiber port, the connector defining a first length, L.sub.1, as measured between a leading edge and a trailing edge of the connector when the connector is in a locked configuration, and a second length, L.sub.2, as measured between the leading edge and the trailing edge of the connector when the connector is in an unlocked configuration, wherein L.sub.1 is different than L.sub.2. In an embodiment, L.sub.2 is greater than L.sub.1. In another embodiment, the connector comprises a boot and a housing, and the boot and housing are configured to float relative to one another.

Fiber optic network systems are implemented, at least in part, using very small form factor (VSFF) interconnect components such as VSFF duplex connector; VSFF mechanical transfer ferrule (MT) connector; VSFF duplex uniboot connector; VSFF MT uniboot connector; VSFF duplex adapter; VSFF MT adapter; VSFF duplex pluggable transceiver; VSFF MT pluggable transceiver; VSFF patch cable assembly; VSFF trunk cable; and/or VSFF breakout cable. The VSFF fiber optic network systems can define fiber breakout cabling that connects large trunk cables to many peripheral network locations. The network systems can define branches and sub-branches from a trunk cable. The network systems can define cross-connect sub-networks between sets of transceivers or adapters. The network systems can define a trunk-to-transceiver cabling assembly for connecting a trunk cable to at least 32 transceiver ports.