Abstract: Coupling of light from large angular distribution microLEDs into smaller angular acceptance distribution of transmission channels is performed using optical elements.

Abstract: Microlens array formation and alignment to heterogeneously integrated optoelectronic devices. Optoelectronic devices are printed or transferred in a single process step while also creating inactive optoelectronic devices that are precisely shaped for alignment purposes rather than for optical or electrical performance. Microlenses are integrated monolithically. The microlenses are aligned directly to a fiducial generated by the device integration step, reducing overall misalignment. Additionally, we use specific optical designs for the lenses to add novel functionalities to the system. By designing the lenses with engineered offsets, distances and curvatures with respect to the arrays of optoelectronic devices, we control properties of light such as: angles, phase, beam widths, and wavelength dependence.

Abstract: A compact bi-telecentric device includes refractive lenses and takes in light from a grid of emitters at the object plane and images them to a grid of receivers. It provides the capacity to combine multiple wavelengths of emitters at the object plane into a single receiver. The device is quite compact, less than 25 mm in length from object to image, and having a maximum diameter for any element of less than 4 mm. The device includes four optical lens elements, three of which have a positive focal length and one of which has a negative focal length. The device includes at least one diffractive optical element. The lens elements are separated into two distinct groups which each have positive optical power, separated by an aperture stop which may or may not be enabled by a physical surface. A diffractive element enables wavelength division multiplexing and compensates for distortion from the bi-telecentric device.

Abstract: Optical communication system communicates between an array of originating tiles and an array of terminating tiles. Each array is associated with a lenslet array, such as a two-layer array. Each originating tile has an array and each terminating tile has an array of transceivers. Each tile is associated with a common lenslet or lenslet pair. A beamlet from a representative originating transceiver passes through the lenslet pair adjacent to its tile via an originating Fourier transform element, collimating optics, and a terminating Fourier transform element. The beam then passes through the lenslet pair adjacent to the tile containing the terminating transceiver associated with the representative originating transceiver, and is focused onto that receiver by that lenslet pair.

Abstract: Optical communication system communicates between an array of originating tiles and an array of terminating tiles. Each array is associated with a lenslet array, such as a two-layer array which has two layers of lenslets. Each originating tile has an array of transmitters and each terminating tile has an array of receivers. Each tile is associated with a common lenslet or lenslet pair. A beamlet from a representative transmitter passes through the lenslet pair adjacent to its tile to become a collimated beam whose angle is related to the location of the transmitter. The collimated beam passes through the receiver lenslet pair adjacent to the tile containing the receiver associated with the representative transmitter, and is focused onto that receiver by that lenslet pair. The system may operate in the reverse direction, wherein the transmitters are transmitter-receivers, the receivers are receiver-transmitters, and a beam from a receiver-transmitter is directed to its corresponding transmitter-receiver.

Abstract: Coupling of light from large angular distribution microLEDs into smaller angular acceptance distribution of transmission channels is performed using optical elements.

Abstract: Optical communication system communicates between an array of originating tiles and an array of terminating tiles. Each array is associated with a lenslet array, such as a two-layer array which has two layers of lenslets. Each originating tile has an array of transmitters and each terminating tile has an array of receivers. Each tile is associated with a common lenslet or lenslet pair. A beamlet from a representative transmitter passes through the lenslet pair adjacent to its tile to become a collimated beam whose angle is related to the location of the transmitter. The collimated beam passes through the receiver lenslet pair adjacent to the tile containing the receiver associated with the representative transmitter, and is focused onto that receiver by that lenslet pair. The system may operate in the reverse direction, wherein the transmitters are transmitter-receivers, the receivers are receiver-transmitters, and a beam from a receiver-transmitter is directed to its corresponding transmitter-receiver.

Abstract: An expanded beam multicore fiber connector has a collimating lens attached to the end of an input multicore fiber, converting its spatially multiplexed array of micron-scale beams into an angularly multiplexed array of beams. The mating point of the connector is disposed past the input collimating lens to a point where these angularly multiplexed beams have substantial spatial overlap. The expanded beam multicore fiber connector may also have a key to aid in angular alignment. An output expanded beam multicore fiber connector mated to the first has a lens that focuses the angularly multiplexed beams onto the output multicore fiber. There is a gap between the lenses in the output and input expanded beam multicore fiber connector due to the extension of the mating point beyond the past the lens. The gap is configured to provide a substantially telecentric imaging system.

Abstract: Optical systems for performing matrix-matrix multiplication in real time utilizing spatially coherent input light and wavelength multiplexing.

Abstract: Optical systems for performing matrix-matrix multiplication in real time utilizing spatially coherent input light and wavelength multiplexing.

Abstract: Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the spectral bands. A plurality of wavelength routing elements are configured to selectively route input optical signal spectral bands to output optical signals.

Abstract: Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the spectral bands. A plurality of wavelength routing elements are configured to selectively route input optical signal spectral bands to output optical signals.

Abstract: Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the spectral bands. A plurality of wavelength routing elements are configured to selectively route input optical signal spectral bands to output optical signals.

Abstract: Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the spectral bands. A plurality of wavelength routing elements are configured to selectively route input optical signal spectral bands to output optical signals.

Abstract: An internal combustion engine has a cylinder and a piston disposed with the cylinder to define a combustion chamber that is bounded at least in part by interior surfaces of the cylinder and a surface of the piston. A mechanism coupled with the piston reciprocates the piston within the cylinder, causing the combustion chamber to have a volume that varies in accordance with motion of the piston. A torsional element is coupled with the mechanism such that mechanical energy is stored in and released from the torsional element with motion of the piston.

Abstract: Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the spectral bands. A plurality of wavelength routing elements are configured to selectively route input optical signal spectral bands to output optical signals.

Abstract: Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the spectral bands. A plurality of wavelength routing elements are configured to selectively route input optical signal spectral bands to output optical signals.

Abstract: Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the spectral bands. A plurality of wavelength routing elements are configured to selectively route input optical signal spectral bands to output optical signals.

Abstract: Apparatus for diversely routing optical wavelengths across a point-to-point subnetwork. An optical network includes a first optical ring having at least first, second, and third nodes adjacently positioned; a second optical ring having at least fourth, fifth, and sixth nodes adjacently positioned, pairs of optical fibers link the adjacent nodes; a point-to-point subnetwork having at least first, second, third, and fourth optical fibers optically coupling the first and second optical rings. The first node is configured to route working bands across the first optical fiber to the fifth node and to route a copy of the working bands to the second node. The second node is configured to route either the copy of the working bands or a select subset of the copy of the working bands across the third optical fiber to the fourth node.

Abstract: Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the spectral bands. A plurality of wavelength routing elements are configured to selectively route input optical signal spectral bands to output optical signals.