Abstract: To communicate between terminal devices, a time period of overlap between a first time slot of first advertisement content provided to a first terminal device and a second time slot of second advertisement content provided to a second terminal device is determined. An indication is sent for establishment of a call session between the first terminal device and second terminal device during the time period of overlap.

Abstract: A method and apparatus for transmitting and receiving power over optical fiber is disclosed. In particular, a power over fiber system in which an optical network transmits electrical power via an optical signal and is also transmits data within the optical network as well. The optical signals include a high frequency data portion that includes the data to be transmitted, and either a constant or low frequency power signal portion. The optical signal is received and converted into an electrical signal by a photodetector/photodiode that is electrically filtered to separate the data signal from the power signal. The data signal is then processed using known techniques. The power signal can be conditioned and/or regulated, if necessary, and provided either directly to a terminal piece of equipment to provide all the required power thereto, or may be combined with locally provided power to contribute at least a portion of the power required by the equipment.

Abstract: To communicate between terminal devices, a time period of overlap between a first time slot of first advertisement content provided to a first terminal device and a second time slot of second advertisement content provided to a second terminal device is determined. An indication is sent for establishment of a call session between the first terminal device and second terminal device during the time period of overlap.

Abstract: Method and apparatus for stabilizing an optical carrier frequency of a generated carrier signal with respect to a target carrier frequency. The apparatus includes a multi-channel optical filter for filtering the generated carrier signal, thereby to provide a first filtered optical signal and a second filtered optical signal, each filtered optical signal including the portion of the generated carrier signal contained in a pass band surrounding a respective channel center frequency. The apparatus also includes a detection unit for determining an indication of a characteristic of the target carrier frequency in the first and second filtered optical signals, as well as a control unit for adjusting the optical carrier frequency of the generated carrier signal as a function of the difference in the indication of the characteristic of the target carrier frequency in the first and second filtered optical signals.

Abstract: A free space optical interconnect system having redundant elements of a transmitter and/or receiver and being tolerant to misalignments is provided. The system provides monitoring of a misalignment between the transmitter and receiver, including determining of a direction and amplitude of the misalignment. When the amplitude of the misalignment is exceeding a pre-determined threshold value, the data to be transmitted is re-routed from the element which is misaligned to a redundant element selected along a direction associated with the direction of the misalignment so as to ensure data transmission through the system. In an embodiment of the invention, monitoring of the misalignment and determining of the direction and the amplitude of the misalignment is performed by measuring of a position of a laser spot of a dedicated alignment laser on a dedicated detector.

Abstract: Method and apparatus for stabilizing an optical carrier frequency of a generated carrier signal with respect to a target carrier frequency. The apparatus includes a multi-channel optical filter for filtering the generated carrier signal, thereby to provide a first filtered optical signal and a second filtered optical signal, each filtered optical signal including the portion of the generated carrier signal contained in a pass band surrounding a respective channel center frequency. The apparatus also includes a detection unit for determining an indication of a characteristic of the target carrier frequency in the first and second filtered optical signals, as well as a control unit for adjusting the optical carrier frequency of the generated carrier signal as a function of the difference in the indication of the characteristic of the target carrier frequency in the first and second filtered optical signals.