Structures that include a distributed Bragg reflector and methods of fabricating a structure that includes a distributed Bragg reflector. The structure includes a substrate, an optical component, and a distributed Bragg reflector positioned between the optical component and the substrate. The distributed Bragg reflector includes airgaps and silicon layers that alternate in a vertical direction with the airgaps to define a plurality of periods.

This disclosure relates to an optical device comprising: a first filter waveguide section having an input for receiving a pump signal, the first filter waveguide section further having an output; an emitter waveguide section having an input coupled to the output of the first filter waveguide section to receive a transmitted pump signal therefrom, the emitter waveguide section supporting at least a first guided lower-order optical mode and a second guided higher-order optical mode, the emitter waveguide section comprising a photon emitter coupled to the first guided mode to emit radiation into the first guided mode and coupled to the second guided mode to allow optical pumping of the photon emitter by pump signal power carried in the second guided mode, the emitter waveguide section further having an output for outputting radiation emitted from the photon emitter; a second filter waveguide section having an input coupled to the output of the emitter waveguide section and having an output, the second filter waveguide section being configured to transmit radiation emitted into the first guided mode with lower loss than radiation emitted into modes other than the first guided mode; the first filter waveguide section being configured to couple pump signal power predominantly into the second guided mode of the emitter section.

An illuminator for a display panel includes a light source for providing a light beam and a lightguide coupled to the light source for receiving and propagating the light beam along the substrate. The lightguide includes an array of out-coupling gratings that runs parallel to the array of pixels for out-coupling portions of the light beam from the lightguide such that the out-coupled light beam portions propagate through the substrate and produce an array of optical power density peaks at the array of pixels due to Talbot effect. A period of the array of peaks is an integer multiple of a pitch of the array of pixels.

A photoacoustic apparatus, comprising: at least one optical amplifier, configured to produce light; at least one photonic integrated circuit, configured as a tunable light filter; light guiding means, wherein the at least one optical amplifier, at least one photonic integrated circuit and light guiding means are configured as an optical cavity to produce laser light having an optical path within the optical cavity; and at least one acoustic sensor configured to detect sound produced by analyte introduced into the optical path of the laser light.

Examples described herein relate to an optical device, such as, a ring resonator, that includes a ring waveguide. The ring resonator includes a ring waveguide to allow passage of light therethrough. Further, the ring resonator includes a modulator formed along a first section of the circumference of the ring waveguide to modulate the light inside the ring waveguide based on an application of a first reverse bias voltage to the modulator. Moreover, the ring resonator includes an avalanche photodiode (APD) isolated from the modulator and formed along a second section of the circumference of the ring waveguide to detect the intensity of the light inside the ring waveguide based on an application of a second reverse bias voltage to the APD. The second section is shorter than the first section, and the second reverse bias voltage is higher than the first reverse bias voltage.

A two-channel photonic demultiplexer includes an input region to receive a multi-channel optical signal, two output regions, each adapted to receive a corresponding one of two distinct wavelength channels demultiplexed from the multi-channel optical signal, and a dispersive region including a first material and a second material inhomogeneously interspersed to form a plurality of interfaces that collectively structure the dispersive region to optically separate each of the two distinct wavelength channels from the multi-channel optical signal and respectively guide the first distinct wavelength channel to a first output region and the second distinct wavelength channel to the second output region when the input region receives the multi-channel optical signal. At least one of the first material or the second material is structured within the dispersive region to be schematically reproducible by a feature shape with a pre-determined width.

A structure includes an optical interposer attached to a package substrate, wherein the optical interposer includes a silicon waveguide, a first photonic component optically coupled to the silicon waveguide, a second photonic component optically coupled to the silicon waveguide, and an interconnect structure extending over the silicon waveguide, over the first photonic component, and over the second photonic component, wherein the interconnect structure is electrically connected to the first photonic component and to the second photonic component, a first semiconductor device attached to the interconnect structure, wherein the first semiconductor device is electrically connected to the first photonic component through the interconnect structure, and a second semiconductor device attached to the interconnect structure, wherein the second semiconductor device is electrically connected to the second photonic component through the interconnect structure.

Various embodiments of the present disclosure are directed towards a method for forming an integrated chip the method includes forming a waveguide on a first surface of a substrate. A conductive structure is formed at least partially overlying the waveguide. A light pipe structure is formed over the waveguide. A lower surface of the light pipe structure is disposed between a top surface and a bottom surface of the conductive structure. A lower portion of the light pipe structure contacts the conductive structure.

The invention refers to an optical device for heterodyne interferometry, comprising a chip, a beam splitter, a first waveguide arranged on the chip, light propagating in the first waveguide being guided to the beam splitter, a second waveguide arranged on the chip, light propagating in the second waveguide being guided to and/or from the beam splitter, wherein the beam splitter, the first waveguide, and the second waveguide form part of a Michelson interferometer, wherein the first waveguide and the second waveguide at least partially form two arms of the Michelson interferometer, and wherein two further arms of the Michelson interferometer are at least partially arranged outside the chip.

Provided are a single-photon source device and a single-photon source system including same. The single-photon source device includes a substrate, a straight waveguide extending in a first direction on the substrate, a first coupling layer which is provided on the straight waveguide and has a first point defect, at least one first electrode which is adjacent to the first point defect and provided on the first coupling layer, a ring waveguide which is adjacent to the straight waveguide and provided on the substrate, and at least one second electrode provided on the ring waveguide.