Abstract: Power management for a remote antenna unit(s) (RAUs) in a distributed antenna system. Power can be managed for an RAU configured to power modules and devices that may require more power to operate than power available to the RAU. For example, the RAU may be configured to include power-consuming RAU modules to provide distributed antenna system-related services. As another example, the RAU may be configured to provide power through powered ports in the RAU to external power-consuming devices. Depending on the configuration of the RAU, the power-consuming RAU modules and/or external power-consuming devices may demand more power than is available at the RAU. In this instance, the power available at the RAU can be distributed to the power-consuming modules and devices based on the priority of services desired to be provided by the RAU.

Abstract: Power management for a remote antenna unit(s) (RAUs) in a distributed antenna system. Power can be managed for an RAU configured to power modules and devices that may require more power to operate than power available to the RAU. For example, the RAU may be configured to include power-consuming RAU modules to provide distributed antenna system-related services. As another example, the RAU may be configured to provide power through powered ports in the RAU to external power-consuming devices. Depending on the configuration of the RAU, the power-consuming RAU modules and/or external power-consuming devices may demand more power than is available at the RAU. In this instance, the power available at the RAU can be distributed to the power-consuming modules and devices based on the priority of services desired to be provided by the RAU.

Abstract: An optical fiber having an end section with a front face to couple light in and out of the optical fiber is inserted in an opening of a housing to encase the end section of the optical fiber. The optical fiber is attached to a surface of the housing, wherein the surface forms a boundary of the opening. The front face of the optical fiber is aligned to the opto-electronic device such that light coupled out of the front face of the optical fiber is coupled into the opto-electronic device or light coupled out of the opto-electronic device is coupled into the optical fiber at the front face of the optical fiber.

Abstract: Optical fiber-based distributed antenna systems that support multiple-input, multiple-output (MIMO) antenna configurations and communications. Embodiments disclosed herein include optical fiber-based distributed antenna system that can be flexibly configured to support or not support MIMO communications configurations. In one embodiment, first and second MIMO communication paths are shared on the same optical fiber using frequency conversion to avoid interference issues, wherein the second communication path is provide to a remote extension unit to remote antenna unit. In another embodiment, the optical fiber-based distributed antenna systems may be configured to allow to provide MIMO communication configurations with existing components. Existing capacity of system components are employed to create second communication paths for MIMO configurations, thereby reducing overall capacity, but allowing avoidance of frequency conversion components and remote extension units.

Abstract: Distributed antenna systems providing and supporting radio frequency (RF) communication services and digital data services, and related components and methods are disclosed. The RF communication services can be distributed over optical fiber to client devices, such as remote antenna units for example. Power can also be distributed over electrical medium that is provided to distribute digital data services, if desired, to provide power to remote communications devices and/or client devices coupled to the remote communications devices for operation. In this manner, as an example, the same electrical medium used to transport digital data signals in the distributed antenna system can also be employed to provide power to the remote communications devices and/or client devices coupled to the remote communications devices.

Abstract: Optical fiber-based distributed communications systems that provide and support both RF communication services and digital data services are disclosed herein. The RF communication services and digital data services can be distributed over optical fiber to client devices, such as remote antenna units for example. In certain embodiments, digital data services can be distributed over optical fiber separate from optical fiber distributing RF communication services. In other embodiments, digital data services can be distributed over common optical fiber with RF communication services. For example, digital data services can be distributed over common optical fiber with RF communication services at different wavelengths through wavelength-division multiplexing (WDM) and/or at different frequencies through frequency-division multiplexing (FDM).

Abstract: Optical fiber-based distributed communications components and systems employing wavelength division multiplexing (WDM) for enhanced upgradability. The system comprises a plurality of downlink optical transmitters configured to receive downlink electrical radio frequency (RF) signals from a plurality of RF sources and convert the downlink electrical RF signals into downlink optical RF signals. The system also has a wavelength division multiplexer configured to multiplex downlink optical RF signals into a plurality of downlink wavelengths over a common downlink optical fiber connected to a plurality of remote antenna units (RAUs). In this manner, additional downlink optical fibers are not required to support providing additional RAUs in the system. Wavelength-division de-multiplexing can avoid providing additional uplink optical fibers to distribute uplink signals to RAUs added in the system.

Abstract: Optical fiber-based distributed communications systems that provide and support both RF communication services and digital data services are disclosed herein. The RF communication services and digital data services can be distributed over optical fiber to client devices, such as remote antenna units for example. In certain embodiments, digital data services can be distributed over optical fiber separate from optical fiber distributing RF communication services. In other embodiments, digital data services can be distributed over common optical fiber with RF communication services. For example, digital data services can be distributed over common optical fiber with RF communication services at different wavelengths through wavelength-division multiplexing (WDM) and/or at different frequencies through frequency-division multiplexing (FDM).

Abstract: A bent optical fiber coupler (100) that employs at least one optical fiber (10) is disclosed. The coupler includes a curved optical fiber guide channel (200) having a strong curve. The optical fiber(s) held within the optical fiber guide channel have a bend corresponding to the guide channel curve. The fiber end portions are optionally disposed within a straight fiber guide (160) at a coupler input/output end, which is preferably configured to have a standard connector geometry. Use of nanostructured fibers for the at least one optical fiber allows for strong bends having tight radii of curvature without imparting significant attenuation. Coupler assemblies that include the coupler optically coupled to at least one opto-electronic device (310) are also disclosed.

Abstract: A bent optical fiber coupler (100) that employs at least one optical fiber (10) is disclosed. The coupler includes a curved optical fiber guide channel (200) having a strong curve. The optical fiber(s) held within the optical fiber guide channel have a bend corresponding to the guide channel curve. The fiber end portions are optionally disposed within a straight fiber guide (160) at a coupler input/output end, which is preferably configured to have a standard connector geometry. Use of nanostructured fibers for the at least one optical fiber allows for strong bends having tight radii of curvature without imparting significant attenuation. Coupler assemblies that include the coupler optically coupled to at least one opto-electronic device (310) are also disclosed.