Infrared Remote Over Video Fiber (IROVF) transports any combination of uncompressed/unprocessed/native full quality, full bandwidth, zero latency, and mixed analog and digital signals including audio, video, data, Ethernet, USB, S/PDIF, and TOSLINK, over a fiber optic based cable added with integrated infrared remote control capabilities to remote control uni/bi-directional audio video and IR devices remotely from either sides of the cable Without requiring additional processing adapters, nor processing or reducing the specs of the other carried audio-video data signals which stays original uncompressed, untouched, and unprocessed for a perfect as-is full original functionality and quality.

An optical device and a spectral detection apparatus are provided. The optical device includes an optical waveguide, including: a polychromatic light channel configured to transport a polychromatic light beam, and provided with a light incident surface for receiving the incident polychromatic light beam at an input end of the polychromatic light channel; a chromatic dispersion device arranged downstream from the polychromatic light channel in an optical path and configured to separate the polychromatic light beam from the polychromatic light channel into a plurality of monochromatic light beams; and a plurality of monochromatic light channels arranged downstream from the chromatic dispersion device in the optical path and configured to respectively conduct the plurality of monochromatic light beams with different colors from the chromatic dispersion device. Monochromatic light output surfaces are respectively provided at output ends of the plurality of monochromatic light channels and configured to output the monochromatic light beams.

A head-mounted device may have displays that provide images. Waveguides may be used in conveying the images to eye boxes. The waveguides may overlap lenses in a glasses frame or other head-mounted support structure. The waveguides and lenses may be transparent. This allows real-world objects to be viewed from the eye boxes. Infrared-light reflectors may overlap the lenses. Gaze tracking system light sources may supply infrared light that reflects from the infrared-light reflectors to the eye boxes to illuminate a user's eyes. Gaze tracking system cameras capture gaze tracking images of the eyes from the eye boxes to track the user's gaze. Fiducials associated with the infrared-light reflectors may be monitored using the gaze tracking system cameras. This allows components such as the gaze tracking system cameras to be calibrated.

An optical device includes a concave-convex structure layer having a concavo-convex structure on a surface thereof, the concavo-convex structure formed of a plurality of convexities or a plurality of concavities which are arranged with a sub-wavelength period, a high refractive index layer made of a material having a refractive index higher than that of the concavo-convex structure layer and located on the concavo-convex structure while having a surface conforming to the concavo-convex structure, and a low refractive index layer made of a material having a refractive index lower than that of the high refractive index layer and located on the high refractive index layer. The high refractive layer includes first grating high refractive index portions located at a bottom of the concavo-convex structure to form a first sub-wavelength grating, and second grating high refractive index portions located at a top of the concavo-convex structure to form a second sub-wavelength grating.

A flexible optical waveguide board and a method of manufacturing the same are provided. The flexible optical waveguide board includes: a flexible substrate, wherein a surface of a side of the flexible substrate is a rough surface; an optical waveguide, disposed on the rough surface of the flexible substrate; a cover layer, disposed on a surface of a side of the optical waveguide away from the flexible substrate. In this way, structural reliability and environmental ageing resistance of the flexible optical waveguide board is improved.

An optical waveguide, including a first structural layer, a second structural layer, a first light-guiding element, and multiple second light-guiding elements, is provided. The light-guiding elements are a partially penetrating and partially reflective layer. Multiple first sub-beams in an image beam are transmitted in the first or the second structural layer by a coupling inclined surface. Each first sub-beam forms multiple second sub-beams after being transmitted by the first or the second light-guiding elements. Some of the second sub-beams are coupled out of the optical waveguide by the second light-guiding elements, thereby enabling the image beam to expand in a first direction. For a portion of the visible light waveband, a trend of transmittance of the partially penetrating and partially reflective layer changing as a wavelength increases is opposite to a trend of transmittance of the first structural layer or the second structural layer changing as the wavelength increases.

A THz waveguide is described, comprising four conductive wires separated by an air gap, the THz waveguide allowing low-loss and dispersion-free propagation of a THz signal. The system for terahertz polarization-division multiplexing comprises at least two THz sources, a THz waveguide and a THz receiver, wherein said THz waveguide comprises four conductive wires separated by an air gap; THz pulses from the THz sources being coupled into the THz waveguide; the THz waveguide transmitting the THz pulses independently, the THz waveguide operating as a broadband polarization-division multiplexer. The method for terahertz polarization-division multiplexing, comprising multiplexing THz pulses from terahertz sources in free-space, coupling resulting multiplexed THz pulses into a THz waveguide comprising four conductive wires separated by an air gap; and demultiplexing the multiplexed THz pulses after propagation in the waveguide.

A mobile-platform imaging device uses compression of the target region to generate an image of an object. A tactile sensor has an optical waveguide with a flexible, transparent first layer. Light is directed into the waveguide. Light is scattered out of the first layer when the first layer is deformed. The first layer is deformed by the tactile sensor being pressed against the object. A force sensor detects a force pressing the tactile sensor against the object and outputs corresponding force information. A first communication unit receives the force information from the force sensor. A receptacle holds a mobile device with a second communication unit and an imager that can generate image information using light scattered out of the first layer. The first communication unit communicates with the second communication unit and the mobile device communicates with an external network.

Disclosed are systems and methods for manufacturing energy directing systems for directing energy of multiple energy domains. Energy relays and energy waveguides are disclosed for directing energy of multiple energy domains, including electromagnetic energy, acoustic energy, and haptic energy. Systems are disclosed for projecting and sensing 4D energy-fields comprising multiple energy domains.

Disclosed are systems and methods for manufacturing energy directing systems for directing energy of multiple energy domains. Energy relays and energy waveguides are disclosed for directing energy of multiple energy domains, including electromagnetic energy, acoustic energy, and haptic energy. Systems are disclosed for projecting and sensing 4D energy-fields comprising multiple energy domains.