Abstract: A terahertz (THz) waveguide and method for production allows for THz waveguides to be used in or on a printed circuit board (PCB) such that the propagation of THz waves require less power, result in less signal loss due to radiation or dispersion, and propagate more efficiently. Additionally, the position and/or geometry of a waveguide, as well as any additional antenna or coupling element, may be adjusted on or in the PCB such that the electromagnetic field of the waveguide may more efficiently couple with the electromagnetic field of the PCB.

Abstract: A terahertz (THz) waveguide and method for production allows for THz waveguides to be used in or on a printed circuit board (PCB) such that the propagation of THz waves require less power, result in less signal loss due to radiation or dispersion, and propagate more efficiently. Additionally, the position and/or geometry of a waveguide, as well as any additional antenna or coupling element, may be adjusted on or in the PCB such that the electromagnetic field of the waveguide may more efficiently couple with the electromagnetic field of the PCB.

Abstract: A terahertz (THz) waveguide and method for production allows for THz waveguides to be used in or on a printed circuit board (PCB) such that the propagation of THz waves require less power, result in less signal loss due to radiation or dispersion, and propagate more efficiently. Additionally, the position and/or geometry of a waveguide, as well as any additional antenna or coupling element, may be adjusted on or in the PCB such that the electromagnetic field of the waveguide may more efficiently couple with the electromagnetic field of the PCB.

Abstract: A terahertz (THz) waveguide and method for production allows for THz waveguides to be used in or on a printed circuit board (PCB) such that the propagation of THz waves require less power, result in less signal loss due to radiation or dispersion, and propagate more efficiently. Additionally, the position and/or geometry of a waveguide, as well as any additional antenna or coupling element, may be adjusted on or in the PCB such that the electromagnetic field of the waveguide may more efficiently couple with the electromagnetic field of the PCB.

Abstract: A method to manufacture optoelectronic modules comprises a step of providing a first wafer comprising a plurality of first module portions, wherein each of the first module portions comprises at least one passive optical component, providing a second wafer comprising a plurality of second module portions, wherein each of the second module portions comprises at least one optoelectronic component. The wafers are disposed on each other to provide a wafer stack that is diced into individual optoelectronic modules respectively comprising one of the first and the second and the third module portions.

Abstract: Electrical-optical interface devices and methods for use in optical communications systems are disclosed. The electrical-optical interface devices are configured to convert electrical signals to optical signals and optical signals to electrical signals, and are configured to connect to external devices. The electrical-optical interface device is configured to monitor the data transmission between external devices over a primary communication pathway. The electrical-optical interface device is designed to reconfigure itself when it receives information about a communication error so that it automatically utilizes secondary optical communication pathways as redundant optical communication pathways to maintain data communication between the external devices.

Abstract: A method to manufacture optoelectronic modules comprises a step of providing a first wafer comprising a plurality of first module portions, wherein each of the first module portions comprises at least one passive optical component, providing a second wafer comprising a plurality of second module portions, wherein each of the second module portions comprises at least one optoelectronic component. The wafers are disposed on each other to provide a wafer stack that is diced into individual optoelectronic modules respectively comprising one of the first and the second and the third module portions.

Abstract: A multi-fiber aggregate is provided. The multi-fiber aggregate includes at least two optical fibers, each of the at least two optical fibers having a core member formed from a silica-based glass and an outer cladding layer formed from a silica-based glass surrounding and in direct contact with the core member. The multi-fiber aggregate also includes a polymeric binding coating surrounding the at least two optical fibers and holding the at least two fibers in a predetermined geometry.

Abstract: A multi-fiber aggregate is provided. The multi-fiber aggregate includes at least two optical fibers, each of the at least two optical fibers having a core member formed from a silica-based glass and an outer cladding layer formed from a silica-based glass surrounding and in direct contact with the core member. The multi-fiber aggregate also includes a polymeric binding coating surrounding the at least two optical fibers and holding the at least two fibers in a predetermined geometry.

Abstract: A method to manufacture optoelectronic modules comprises a step of providing a first wafer comprising a plurality of first module portions, wherein each of the first module portions comprises at least one passive optical component, providing a second wafer comprising a plurality of second module portions, wherein each of the second module portions comprises at least one optoelectronic component. The wafers are disposed on each other to provide a wafer stack that is diced into individual optoelectronic modules respectively comprising one of the first and the second and the third module portions.

Abstract: Electrical-optical interface devices and methods for use in optical communications systems are disclosed. The electrical-optical interface devices are configured to convert electrical signals to optical signals and optical signals to electrical signals, and are configured to connect to external devices. The electrical-optical interface device is configured to monitor the data transmission between external devices over a primary communication pathway. The electrical-optical interface device is designed to reconfigure itself when it receives information about a communication error so that it automatically utilizes secondary optical communication pathways as redundant optical communication pathways to maintain data communication between the external devices.

Abstract: Optical engines and optical cable assemblies incorporating optical engines providing duty cycle correction on multiplexed low-speed signals are disclosed. In one embodiment, an optical engine includes a low-speed Tx line, a low-speed Rx line, an optical transceiver device, and a control circuit. A low-speed Tx signal is transmitted on the low-speed Tx line and a low-speed Rx signal is received on the low-speed Rx line. The optical transceiver device further includes a laser control pin operable to control a laser configured to provide light on an optical Tx lane, and an optical detect pin operable to provide an indication as to light detected at an optical Rx lane. A Tx signal conditioning circuit configured to condition the low-speed Tx signal is coupled to the laser control pin, and/or a Rx signal conditioning circuit configured to condition the low-speed Rx signal is coupled to the optical detect pin.

Abstract: Optical cable assemblies, optical engines, and methods for transitioning into and out of a sleep mode are disclosed. In one embodiment, a method of operating a sleep mode of an optical cable assembly includes receiving a sleep trigger, and for a time T1, turning a laser of an optical transmit (Tx) lane of an optical transceiver device on or off, and providing a fixed logical high or a fixed logical low on low-speed receive (Rx) line of the optical cable assembly based on a connection state of an electrical connector of the optical cable assembly. The method further includes, after the time T1, turning off the laser of the optical Tx lane, placing one or more components of the optical transceiver device into a low-power state, and periodically transmitting an optical intra-cable signal from the optical transceiver device over optical fiber to a far end of the optical cable assembly.

Abstract: Optical engines and optical cable assemblies incorporating optical engines providing duty cycle correction on multiplexed low-speed signals are disclosed. In one embodiment, an optical engine includes a low-speed Tx line, a low-speed Rx line, an optical transceiver device, and a control circuit. A low-speed Tx signal is transmitted on the low-speed Tx line and a low-speed Rx signal is received on the low-speed Rx line. The optical transceiver device further includes a laser control pin operable to control a laser configured to provide light on an optical Tx lane, and an optical detect pin operable to provide an indication as to light detected at an optical Rx lane. A Tx signal conditioning circuit configured to condition the low-speed Tx signal is coupled to the laser control pin, and/or a Rx signal conditioning circuit configured to condition the low-speed Rx signal is coupled to the optical detect pin.

Abstract: A touch system for sensing a touch event that includes a transparent sheet having opposite upper and lower surfaces and an index of refraction n2. The system also has at least one light source that emits light. The light source is arranged in optical communication with the transparent sheet to cause the light to travel within the transparent sheet by total-internal reflection (TIR). At least one detector is arranged to detect the TIR-traveling light and to detect an amount of attenuation in the TIR-traveling light caused by the touch event. An interface layer is disposed on the lower surface of the transparent sheet. The interface layer has a refractive index n1, wherein n1<n2, and has a thickness of equal to or greater than 1 micron. The interface layer obviates the need for an air gap when interfacing the touch system to a display unit of display device.

Abstract: Optical engines and optical cable assemblies incorporating optical engines capable of transmitting low-speed and high-speed signals over the same optical fibers are disclosed. In one embodiment, an optical engine includes a low-speed transmit (Tx) line, a low-speed receive (Rx) line, a high-speed data lane, an optical transceiver device, and a control circuit. The high-speed data lane includes a high-speed Tx lane and a high-speed Rx lane. A high-speed signal present on the high-speed Tx lane is converted to a high-speed optical signal at an optical Tx lane, and a high-speed optical signal received at an optical Rx lane is converted to a high-speed signal that is provided to the high-speed Rx lane. The control circuit selectively routes the low-speed Tx signal at the low-speed Tx line directly to the optical transceiver device in real time, and also routes a low-speed Rx signal from the transceiver to the low-speed Rx line.

Abstract: Optical cable assemblies, optical engines, and methods for transitioning into and out of a sleep mode are disclosed. In one embodiment, a method of operating a sleep mode of an optical cable assembly includes receiving a sleep trigger, and for a time T1, turning a laser of an optical transmit (Tx) lane of an optical transceiver device on or off, and providing a fixed logical high or a fixed logical low on low-speed receive (Rx) line of the optical cable assembly based on a connection state of an electrical connector of the optical cable assembly. The method further includes, after the time T1, turning off the laser of the optical Tx lane, placing one or more components of the optical transceiver device into a low-power state, and periodically transmitting an optical intra-cable signal from the optical transceiver device over optical fiber to a far end of the optical cable assembly.

Abstract: Optical engines and optical cable assemblies incorporating optical engines capable of transmitting low-speed and high-speed signals over the same optical fibers are disclosed. In one embodiment, an optical engine includes a low-speed transmit (Tx) line, a low-speed receive (Rx) line, a high-speed data lane, an optical transceiver device, and a control circuit. The high-speed data lane includes a high-speed Tx lane and a high-speed Rx lane. A high-speed signal present on the high-speed Tx lane is converted to a high-speed optical signal at an optical Tx lane, and a high-speed optical signal received at an optical Rx lane is converted to a high-speed signal that is provided to the high-speed Rx lane. The control circuit selectively routes the low-speed Tx signal at the low-speed Tx line directly to the optical transceiver device in real time, and also routes a low-speed Rx signal from the transceiver to the low-speed Rx line.

Abstract: A touch system for sensing a touch event that includes a transparent sheet having opposite upper and lower surfaces and an index of refraction n2. The system also has at least one light source that emits light. The light source is arranged in optical communication with the transparent sheet to cause the light to travel within the transparent sheet by total-internal reflection (TIR). At least one detector is arranged to detect the TIR-traveling light and to detect an amount of attenuation in the TIR-traveling light caused by the touch event. An interface layer is disposed on the lower surface of the transparent sheet. The interface layer has a refractive index n1, wherein n1<n2, and has a thickness of equal to or greater than 1 micron. The interface layer obviates the need for an air gap when interfacing the touch system to a display unit of display device.

Abstract: A method of and system for estimating the bit error rate of a channel in an optical communication system includes a method of and system for measuring the in-band cross-talk of the channel in a wavelength division multiplexed system. A single channel is selected from the plurality of channels in the optical communication system. The signal in this single channel is passed to a digital signal processor proportional to the time rate of change of a phase of an optical source generating the signal. The digital signal processor converts the filtered signal into the frequency domain, and a spectrum analyzer determines the features of the in-band cross-talk from the signal in the frequency domain. The features of the in-band cross-talk may be combined with other measured noise features, such as the power spectral density, to estimate BER.