摘要:
As discussed herein, there is presented a visual communication system, a method of conducting two-way visual communication and an apparatus. In one embodiment, the apparatus includes: (1) a lens substrate having a first array of micro lenses on one side thereof, (2) an optical output substrate having a second array of display pixels and (3) an optical input substrate having a third array of image sensors laterally inter-dispersed with respect to display pixels of the first array and positioned to receive light from the micro lenses of the first array.
摘要:
As discussed herein, there is presented a visual communication system, a method of conducting two-way visual communication and an apparatus. In one embodiment, the apparatus includes: (1) a lens substrate having a first array of micro lenses on one side thereof, (2) an optical output substrate having a second array of display pixels and (3) an optical input substrate having a third array of image sensors laterally inter-dispersed with respect to display pixels of the first array and positioned to receive light from the micro lenses of the first array.
摘要:
An apparatus includes a first optical mode coupler having a spatial light modulator with a two-dimensional array of separately controllable optical phase modulators. The optical mode coupler is configurable to cause the spatial light modulator to couple a light source or light detector to an end-face of a multi-mode optical fiber via a plurality of light beams. Each of the light beams couples to a different one of optical modes in the multi-mode optical fiber.
摘要:
An apparatus includes an all-optical transmission line having, at one wavelength, a pair of relatively orthogonal optical propagating modes whose local group velocities differ along a part of the all-optical transmission line. The all-optical transmission line is formed by a sequence of optically end-connected multi-mode fiber segments. The segments include, at least, 80% of the optical path length of the all-optical transmission line. Each segment is configured such that a differential group delay between the pair varies monotonically there along and changes by, at least, 200 pico-seconds thereon.
摘要:
An optical coupler for coupling optical-pump power into a multimode fiber configured to transport an optical space-division-multiplexed (SDM) signal, the coupling being performed in a manner that enables amplification of the SDM signal in the multimode fiber via a stimulated-emission process or a stimulated Raman-scattering process. The optical coupler can be a part of an optical transmitter configured for co-directional pumping, an optical receiver configured for contra-directional pumping, or a relay station disposed within an optical communication link and configured for either type of pumping. The optical coupler can advantageously be used, e.g., to offset the different degrees of attenuation to which the SDM-signal components corresponding to different guided modes of the multimode fiber are subjected to therein.
摘要:
An apparatus includes a first optical mode coupler having a spatial light modulator with a two-dimensional array of separately controllable optical phase modulators. The optical mode coupler is configurable to cause the spatial light modulator to couple a light source or light detector to an end-face of a multi-mode optical fiber via a plurality of light beams. Each of the light beams couples to a different one of optical modes in the multi-mode optical fiber.
摘要:
An optical communication system having an optical transmitter and an optical receiver optically coupled via a multi-path fiber. The optical transmitter launches, into the multi-path fiber, an optical transverse-mode-multiplexed (TMM) signal having a plurality of independently modulated components by coupling each independently modulated component into a respective transverse mode of the multi-path fiber. The TMM signal undergoes inter-mode mixing in the multi-path fiber before being received by the optical receiver. The optical receiver processes the received TMM signal to reverse the effects of inter-mode mixing and recover the data carried by each of the independently modulated components.
摘要:
An optical coupler for coupling a multimode waveguide and two or more other waveguides. In one embodiment, the optical coupler has an optical phase mask disposed between the multimode waveguide and two or more other waveguides. The optical phase mask imposes on the light passing therethrough a spatial phase pattern that causes selective mode-to-waveguide coupling between the multimode waveguide and the other waveguides. The optical coupler can be used, e.g., in transmitters and receivers of optical transverse-mode-multiplexed signals.
摘要:
A representative embodiment of the invention provides an infrared (IR) imaging system adapted to (i) convert an IR image of an object into mechanical displacements of a plurality of movable plates, (ii) use the mechanical displacements to impart a corresponding spatial phase modulation pattern onto a beam of visible light, and (iii) apply spatial filtering to convert the spatial phase modulation pattern into a visible image of the object.
摘要:
A spatial light modulator 100 comprising an array-type liquid crystal panel 115, a polarization beam splitter 120, an oblique wave plate 130 and a converging lens 135. The polarization beam splitter is orientated to direct a source light 125 towards a reflective planar surface 127 of the array-type liquid crystal panel. The oblique wave plate and converging lens are located between the polarization beam splitter and the array-type liquid crystal panel. The converging lens is configured to direct light from the reflective planar surface onto a facing surface 125 of the polarization beam splitter.