Abstract: Fiberoptic connector and adapter assembly includes a fiberoptic connector received within an adapter. The connector has a cover on the connector housing. The cover pivots between open and closed positions to expose or cover, respectively, a optical fiber contained within the connector. Longitudinal guides of the connector are received cooperating with longitudinal guides of the adapter to direct the connector into the adapter in a prescribed alignment. A cam pin is carried on the adapter to engage a cam pin receiving slot on the cover to urge the cover to the open position as the connector is inserted into the adapter.

Abstract: Fiberoptic connector and adapter assembly includes a fiberoptic connector received within an adapter. The connector has a cover on the connector housing. The cover pivots between open and closed positions to expose or cover, respectively, a optical fiber contained within the connector. Longitudinal guides of the connector are received cooperating with longitudinal guides of the adapter to direct the connector into the adapter in a prescribed alignment. A cam pin is carried on the adapter to engage a cam pin receiving slot ok the cover to urge the cover to the open position as the connector is inserted into the adapter.

Abstract: Optical circulators can be formed with one or more adjustable components to facilitate the optimization of light coupling into the ports of the circulator. In particular, an optical circulator includes one or more adjustable mirrors positioned in the propagation path of a light beam travelling from a first port to a third port, typically via a second port, through the circulator. The one or more adjustable mirrors permit the deviation of the propagation path of the light beam to achieve better input precision into the circulator. One example of a method of circulating light from a first port to a third port includes propagating light from a first port through a reflective polarizer to a second port. The light then propagates from the second port into the reflective polarizer and is reflected from the reflective polarizer to a first mirror.

Abstract: Fiberoptic connector and adapter assembly includes a fiberoptic connector received within an adapter. The connector has a cover on the connector housing. The cover pivots between open and closed positions to expose or cover, respectively, a optical fiber contained within the connector. Longitudinal guides of the connector are received cooperating with longitudinal guides of the adapter to direct the connector into the adapter in a prescribed alignment. A cam pin is carried on the adapter to engage a cam pin receiving slot on the cover to urge the cover to the open position as the connector is inserted into the adapter.

Abstract: Fiberoptic connector and adapter assembly includes a fiberoptic connector received within an adapter. The connector has a cover on the connector housing. The cover pivots between open and closed positions to expose or cover, respectively, a optical fiber contained within the connector. Longitudinal guides of the connector are received cooperating with longitudinal guides of the adapter to direct the connector into the adapter in a prescribed alignment. A cam pin is carried on the adapter to engage a cam pin receiving slot o the cover to urge the cover to the open position as the connector is inserted into the adapter.

Abstract: A coupling device has a first focusing element positioned on a first optical axis. The first focusing element is couplable to receive output light beams from a plurality of optical fibers, and has a first focusing power selected to direct the light beams to intersect the first optical axis at a first intersection position. A second focusing element is spaced apart from the first focusing element by a first separation distance along the first optical axis and is positioned to receive the light beams from the first focusing element. The second focusing element has a second focusing power and the first separation distance is selected to parallelize the light beams received from the first focusing element. A system for providing access to light beams propagating through a plurality of fibers uses two of the coupling devices.

Abstract: An optical circulator has a single focusing element to couple light between the circulator components and two optical fibers. The optical elements The input face of the first birefringent element of the circulator is adapted for the non-parallel light paths resulting from the single focusing element, while maintaining an essentially in-line geometry.

Abstract: A multiport isolator provides optical isolation between pairs of optical fibers so that light may pass from a first fiber to a second fiber of the pair, but not from the second fiber to the first fiber. The multiport isolator has first and second coupling modules to couple light from different fibers, and an isolator module between the coupling modules to prevent light from passing from the second fiber to the first fiber of a fiber pair.

Abstract: A reflective circulator includes a birefringent splitting and combining element, a non-reciprocal polarization rotator, and birefringent translating element. Some embodiments of the circulator include an inverting reflector. The circulator can be scaled to have a large number of ports arranged in a one dimensional array or in a two dimensional pattern, such as an array.

Abstract: Fiberoptic connector and adapter assembly includes a fiberoptic connector received within an adapter. The connector has a cover on the connector housing. The cover pivots between open and closed positions to expose or cover, respectively, a optical fiber contained within the connector. Longitudinal guides of the connector are received cooperating with longitudinal guides of the adapter to direct the connector into the adapter in a prescribed alignment. A cam pin is carried on the adapter to engage a cam pin receiving slot on the cover to urge the cover to the open position as the connector is inserted into the adapter. A spring mechanism biases the cover toward the closed position and open positions.

Abstract: Fiberoptic connector and adapter assembly includes a fiberoptic connector received within an adapter. The connector has a cover on the connector housing. The cover pivots between open and closed positions to expose or cover, respectively, a optical fiber contained within the connector. Longitudinal guides of the connector are received cooperating with longitudinal guides of the adapter to direct the connector into the adapter in a prescribed alignment. A cam pin is carried on the adapter to engage a cam pin receiving slot on the cover to urge the cover to the open position as the connector is inserted into the adapter.

Abstract: Fiberoptic connector and adapter assembly includes a fiberoptic connector received within an adapter. The connector has a cover on the connector housing. The cover pivots between open and closed positions to expose or cover, respectively, a optical fiber contained within the connector. Longitudinal guides of the connector are received cooperating with longitudinal guides of the adapter to direct the connector into the adapter in a prescribed alignment. A cam pin is carried on the adapter to engage a cam pin receiving slot on the cover to urge the cover to the open position as the connector is inserted into the adapter.

Abstract: A fiber optic connector has two ferrules contained within a single connector housing with the ferrules positioned in parallel, spaced-apart alignment. The connector includes a first mating fastener exposed on exterior sides of the connector housing. A fiber optic adapter has an open end to slidably receive the connector housing. The adapter includes two parallel sleeves contained within the adapter housing and aligned with the ferrules of the connector. The adapter includes a second mating fastener exposed to an interior of the adapter housing to releasably mate with the first mating fastener when the connector housing is in the full insert position.

Abstract: Fiberoptic connector and adapter assembly includes a fiberoptic connector received within an adapter. The connector has a cover on the connector housing. The cover pivots between open and closed positions to expose or cover, respectively, a optical fiber contained within the connector. Longitudinal guides of the connector are received cooperating with longitudinal guides of the adapter to direct the connector into the adapter in a prescribed alignment. A cam pin is carried on the adapter to engage a cam pin receiving slot on the cover to urge the cover to the open position as the connector is inserted into the adapter.

Abstract: An optical connector ferrule includes a ferrule body which is cylindrical and has a transition portion extending from a cylindrical body to a terminal end of the ferrule body. The terminal end is provided with an inclined convex end face defining a plane of inclination inclined relative to the bore axis. The transition portion has an outer surface shaped for the transition portion to have a circular cross section taken perpendicular to a center line extending orthogonal to the plane of inclination.

Abstract: A fiber optic connector has two ferrules contained within a single connector housing with the ferrules positioned in parallel, spaced-apart alignment. The connector includes a first mating fastener exposed on exterior sides of the connector housing. A fiber optic adapter has an open end to slidably receive the connector housing. The adapter includes two parallel sleeves contained within the adapter housing and aligned with the ferrules of the connector. The adapter includes a second mating fastener exposed to an interior of the adapter housing to releasably mate with the first mating fastener when the connector housing is in the full insert position.

Abstract: A method for fabricating an optical attenuator from first and second optical fibers includes placing the fibers in closely spaced overlapped relation to define an overlapped portion of the fibers. Energy is initially applied to the overlapped portion to at least partially fuse the first and second fibers at the overlapped portion.

Abstract: A variable attenuator for a fiber optic transmission system includes first and second optical fibers which are axially aligned. The fibers are provided with spherical polishes. The radius of each of the fibers originates at an axis which is offset from an axis of the fiber cores.

Abstract: Light attenuation through a high return loss fixed attenuator is achieved by controlling the offset of two common fiber axes to achieve a controlled transverse misalignment loss while the ends of the fibers are maintained in physical contact under a spring force of the connectors such that a high return loss is achieved.

Abstract: A patch cord includes a cable having a primary transmission member contained within a protective sheathing. An energy transmission member is carried on the cable and extends from a first end to a second end. First and second couplings are connected to the first and second ends of the energy transmission member. The first coupling receives energy from an external source and transmits the energy along the energy transmission member toward the second coupling. The second coupling receives energy from the energy transmission member and generates a visible signal in response to the received energy.