In one embodiment, the disclosure relates to a system of stacked and connected layers of circuits that includes at least one pair of adjacent layers having very few physical (electrical) connections. The system includes multiple logical connections. The logical interconnections may be made with light transmission. A majority of physical connections may provide power. The physical interconnections may be sparse, periodic and regular. The exemplary system may include physical space (or gap) between the a pair of adjacent layers having few physical connections. The space may be generally set by the sizes of the connections. A constant flow of coolant (gaseous or liquid) may be maintained between the adjacent pair of layers in the space.

Systems to extend signal transfer used with a camera device comprise a first location station with a first receiver and a second receiver. The first receiver receives wireless signals from a user device that are changed and sent through a fiber optic cable to a second location station. The second receiver receives signals through the cable from the second location station, which signals are changed to wireless signals output to a user device. The second location station comprises a third receiver that receives from the cable from the first location station, which signals are changed to wireless signals output to a camera device. The second location comprises a fourth receiver that receives wireless signals from the camera device, which signals are changed at the first location to signals sent through the cable from the second location station to the first location station.

Dynamically-switchable optical cables are described. One aspect includes a first terminal and a second terminal, each including a USB/Thunderbolt high-speed electrical interface. Each terminal may include a USB/Thunderbolt signal analysis unit configured to receive one or more USB/Thunderbolt low-speed signals, analyze the USB/Thunderbolt low-speed signals, and determine if the associated terminal is connected to one of a USB/Thunderbolt signal source or a USB/Thunderbolt signal sink. Each terminal may include a signal transmitting unit electrically connected to the respective USB/Thunderbolt high-speed electrical interface, and a signal receiving unit electrically connected to the respective USB/Thunderbolt high-speed electrical interface. The optical cable may include a first optical communication channel connecting an output of the first signal transmitting unit to an input of the second signal receiving unit, and a second optical communication channel connecting an output of the second signal transmitting unit to an input of the first signal receiving unit.

Systems to extend signal transfer used with a camera device comprise a first location station with a first receiver and a second receiver. The first receiver receives wireless signals from a user device that are changed and sent through a fiber optic cable to a second location station. The second receiver receives signals through the cable from the second location station, which signals are changed to wireless signals output to a user device. The second location station comprises a third receiver that receives from the cable from the first location station, which signals are changed to wireless signals output to a camera device. The second location comprises a fourth receiver that receives wireless signals from the camera device, which signals are changed at the first location to signals sent through the cable from the second location station to the first location station.

An optronic transceiver module capable of implementing an optical bidirectional communication of the point to point type via at least one main optical fibre is disclosed. The optronic transceiver module includes a first optical module for supervising an uplink signal received via the main optical fibre delivering a first supervision result, a first optical module for switching the bidirectional communication via the main optical fibre to a bidirectional communication via a backup optical fibre, and vice versa, the first optical switching module being controlled by the first optical supervision module depending on the first supervision result delivered.

A downhole optical communications system provided at a downhole location in use, the downhole communications system being for communicating between the downhole location and an uphole location, such as a surface location. The downhole optical communications system comprises a downhole optical transmitter configured to emit an optical signal for transmission over an optical transmission channel between the uphole location and the downhole optical transmitter; wherein the downhole optical transmitter is configured so as to produce a response to an optical signal received from the optical transmission channel and the downhole optical communications system is configured to determine data represented by the received optical signal from the response produced by the downhole optical transmitter.

Embodiments of the present disclosure provides a visible light communication network. The visible light communication network includes a plurality of optical network nodes, any two optical network nodes of the plurality of optical network nodes are connected through an optical connection, the plurality of optical network nodes form at least one optical communication link, and each of the at least one optical communication link includes at least part of the plurality of optical network nodes. A first optical network node is configured to communicate an optical signal with another optical network node through an optical connection between the first optical network node and the other optical network node, and the first optical network node is any optical network node in the optical communication link.

A wireless power transmission system for a robotic surgical system includes features for optical data transmission. A first component of the surgical system includes a control element, a power transmission element and an optical data transmission element; and a second component of the surgical system including a wireless power receiving element and an optical data receiving element, the second component is removably mountable to the first component. In some embodiments, a barrier such as a surgical drape and/or hermetic enclosure is positioned between the first and second components. In one example, of the components is a robotic manipulator arm and another is a powered instrument removably mountable to the manipulator arm.

An adjustable micro-optoelectronic system supporting bidirectional transmission, an online upgrade, and online configuration. The system includes: a substrate; and edge connectors, a clock-and-data recovery (CDR) chip for transmitting, a CDR chip for receiving, a microprocessor, and an internal optical system, which are provided on the substrate. The edge connectors serve as an interface of a high-speed electrical signal, and are configured to exchange information between the micro-optoelectronic system and an external environment. The internal optical system is configured to transmit and receive an optical signal. A link for the high-speed electrical signal is connected among the edge connectors, the CDR chip for transmitting, the internal optical system, and the CDR chip for receiving. A communication connection is provided between the microprocessor and each of the edge connectors, the CDR chip for transmitting, the CDR chip for receiving, and the internal optical system.

An optical transmission/reception unit includes a carrier rotatable around an axis of rotation, an optical receiver arranged at the carrier on the axis of rotation so as to receive an optical reception signal from a first direction, an optical transmitter arranged at the carrier adjacent to the optical receiver so as to emit an optical transmission signal in a second direction, and a transmission/reception optic arranged at the carrier on the axis of rotation above the optical receiver, wherein the transmission/reception optic includes a reception optic and a transmission optic arranged in the reception optic, wherein the reception optic is configured to guide the optical reception signal striking the transmission/reception optic towards the optical receiver on the axis of rotation, and wherein the transmission optic is configured to displace onto the axis of rotation the optical transmission signal emitted by the optical transmitter.