Abstract: Integrated active photonic device such as optical amplifiers, lasers, light emitters, photodetectors, optical modulators, optical switches, plasmonic devices, all-optical devices, and active photonic devices with high efficiency capable of very low power consumption, low optical loss, and small device size are of interest. An efficient optical waveguide structure for achieving high overlapping between the optical beam mode and the active electro-active region leads to reduced power consumption, low optical loss, and small device size. In an embodiment, low power consumption, low optical loss, and small device size are enabled by a semiconductor active photonic device structure, together with an active semiconductor material that is an electro-optic or electro-absorption or gain material, that are appropriately doped with carriers to substantially lower the power consumption and still maintain the high device performance.

Abstract: Integrated active photonic device such as optical amplifiers, lasers, light emitters, photodetectors, optical modulators, optical switches, plasmonic devices, all-optical devices, and active photonic devices with high efficiency capable of very low power consumption, low optical loss, and small device size are of interest. An efficient optical waveguide structure for achieving high overlapping between the optical beam mode and the active electro-active region leads to reduced power consumption, low optical loss, and small device size. In an embodiment, low power consumption, low optical loss, and small device size are enabled by a semiconductor active photonic device structure, together with an active semiconductor material that is an electro-optic or electro-absorption or gain material, that are appropriately doped with carriers to substantially lower the power consumption and still maintain the high device performance.

Abstract: The present application discloses a system comprising a compact curved grating (CCG) and its associated compact curved grating spectrometer (COGS) or compact curved grating wavelength multiplexer/demultiplexer (WMDM) module and a method for making the same. The system is capable of achieving a very small (resolution vs. size) RS factor. The location of the entrance slit and detector can be adjusted in order to have the best performance for a particular design goal. The initial groove spacing is calculated using a prescribed formula dependent on operation wavelength. The location of the grooves is calculated based on two conditions.

Abstract: The present application discloses a system comprising a compact curved grating (CCG) and its associated compact curved grating spectrometer (COGS) or compact curved grating wavelength multiplexer/demultiplexer (WMDM) module and a method for making the same. The system is capable of achieving a very small (resolution vs. size) RS factor. The location of the entrance slit and detector can be adjusted in order to have the best performance for a particular design goal. The initial groove spacing is calculated using a prescribed formula dependent on operation wavelength. The location of the grooves is calculated based on two conditions.

Abstract: The present application discloses a system comprising a compact curved grating (CCG) and its associated compact curved grating spectrometer (CCGS) or compact curved grating wavelength multiplexer/demultiplexer (WMDM) module and a method for making the same. The system is capable of achieving a very small (resolution vs. size) RS factor. The location of the entrance slit and detector can be adjusted in order to have the best performance for a particular design goal. The initial groove spacing is calculated using a prescribed formula dependent on operation wavelength. The location of the grooves is calculated based on two conditions.

Abstract: Electro-optic (EO) modulator and related device structures which can be used in conjunction with high EO materials to lower switching voltage and improve related performance parameters.

Abstract: Electro-optic (EO) modulator and related device structures which can be used in conjunction with high EO materials to lower switching voltage and improve related performance parameters.

Abstract: A light coupling structure, a method of manufacturing a memory cell, and a magnetic recording head are provided. The light coupling structure includes a light coupling layer having a cavity; a waveguide having a cladding layer and a core layer; wherein the cladding layer of the waveguide is disposed in the cavity of the light coupling layer and the core layer of the waveguide is disposed over the light coupling layer and the cladding layer of the waveguide; wherein the light coupling layer is configured to receive light from a light source and couple the received light into the core layer of the waveguide.

Abstract: Electro-optic (EO) modulator and related device structures which can be used in conjunction with high EO materials to lower switching voltage and improve related performance parameters.

Abstract: According to embodiments of the present invention, a lens comprising a refractive index profile configured such that rays of light propagating in the lens form an at least substantially plane wavefront at an at least substantially vertical plane of the lens, is provided. The profile is configured to vary in an at least substantially bell curve shape along a radial direction of the lens. The lens includes a plurality of layers configured to generate the profile, wherein each layer of the plurality of layers comprises at least a first film and a second film arranged one above the other.

Abstract: An apparatus for passive alignment of optical devices comprises a substrate including a trench in a top surface thereof, where the trench has a first end positioned at an edge of the substrate and a second end positioned at an interior region of the substrate, and a lens disposed on the top surface of the substrate adjacent to the second end of the trench. The apparatus further includes a top holder having a longitudinal indentation in a bottom surface thereof for mounting an optical fiber. The longitudinal indentation is sized to fit a top portion of the optical fiber such that a bottom portion of the optical fiber extends below the bottom surface of the top holder when the optical fiber is mounted therein. One or both of the substrate and the top holder include one or more spacer features configured for three-dimensional (3D) alignment of the lens with the optical fiber when the top holder is brought into contact with the substrate.

Abstract: According to embodiments of the present invention, a waveguide structure is provided. The waveguide structure includes a silicon-on-insulator layer, and a semiconductor waveguide disposed on the silicon-on-insulator layer, wherein the semiconductor waveguide includes a tapering region.

Abstract: The present application discloses a system comprising a compact curved grating (CCG) and its associated compact curved grating spectrometer (CCGS) or compact curved grating wavelength multiplexer/demultiplexer (WMDM) module and a method for making the same. The system is capable of achieving a very small (resolution vs. size) RS factor. The location of the entrance slit and detector can be adjusted in order to have the best performance for a particular design goal. The initial groove spacing is calculated using a prescribed formula dependent on operation wavelength. The location of the grooves is calculated based on two conditions.

Abstract: An apparatus for passive alignment of optical devices comprises a substrate including a trench in a top surface thereof, where the trench has a first end positioned at an edge of the substrate and a second end positioned at an interior region of the substrate, and a lens disposed on the top surface of the substrate adjacent to the second end of the trench. The apparatus further includes a top holder having a longitudinal indentation in a bottom surface thereof for mounting an optical fiber. The longitudinal indentation is sized to fit a top portion of the optical fiber such that a bottom portion of the optical fiber extends below the bottom surface of the top holder when the optical fiber is mounted therein. One or both of the substrate and the top holder include one or more spacer features configured for three-dimensional (3D) alignment of the lens with the optical fiber when the top holder is brought into contact with the substrate.

Abstract: An apparatus for passive alignment of optical devices comprises a substrate including a trench in a top surface thereof, where the trench has a first end positioned at an edge of the substrate and a second end positioned at an interior region of the substrate, and a lens disposed on the top surface of the substrate adjacent to the second end of the trench. The apparatus further includes a top holder having a longitudinal indentation in a bottom surface thereof for mounting an optical fiber. The longitudinal indentation is sized to fit a top portion of the optical fiber such that a bottom portion of the optical fiber extends below the bottom surface of the top holder when the optical fiber is mounted therein. One or both of the substrate and the top holder include one or more spacer features configured for three-dimensional (3D) alignment of the lens with the optical fiber when the top holder is brought into contact with the substrate.

Abstract: Electro-optic (EO) modulator and related device structures which can be used in conjunction with high EO materials to lower switching voltage and improve related performance parameters.

Abstract: The present application discloses a system comprising a compact curved grating (CCG) and its associated compact curved grating spectrometer (CCGS) or compact curved grating wavelength multiplexer/demultiplexer (WMDM) module and a method for making the same. The system is capable of achieving a very small (resolution vs. size) RS factor. In the invention, the location of the entrance slit and detector can be adjusted in order to have the best performance for a particular design goal. The initial groove spacing is calculated using a prescribed formula dependent on operation wavelength. The location of the grooves is calculated based on two conditions. The first one being that the path-difference between adjacent grooves should be an integral multiple of the wavelength in the medium to achieve aberration-free grating focusing at the detector or output slit (or output waveguide) even with large beam diffraction angle from the entrance slit or input slit (or input waveguide).

Abstract: A light coupling structure, a method of manufacturing a memory cell, and a magnetic recording head are provided. The light coupling structure includes a light coupling layer having a cavity; a waveguide having a cladding layer and a core layer; wherein the cladding layer of the waveguide is disposed in the cavity of the light coupling layer and the core layer of the waveguide is disposed over the light coupling layer and the cladding layer of the waveguide; wherein the light coupling layer is configured to receive light from a light source and couple the received light into the core layer of the waveguide.

Abstract: According to embodiments of the present invention, an optical device is provided. The optical device includes an optical fiber comprising a core for propagation of light and a cladding surrounding the core, and at least one microchannel defined in the optical fiber extending at least partially through the cladding, wherein the at least one microchannel has a concave-shaped surface arranged to interact with an optical field of the light. According to further embodiments of the present invention, a method of forming an optical device and a method for determining a parameter of a fluid are also provided.

Abstract: An electronic-integration compatible photonic integrated circuit (EIC-PIC) for achieving high-performance computing and signal processing is provided. The electronic-integration compatible photonic integrated circuit comprises a plurality of electronic circuit structures and a plurality of photonic circuit structures. The electronic and photonic circuit structures are integrated by a process referred to as monolithic integration. An electronic circuit structure includes one or more electronic devices and a photonic circuit structure includes one or more photonic devices. The integration steps of electronic and photonic devices are further inserted into standard CMOS process. The photonic circuit structures and the electronic circuit structures are integrated to form the electronic-integration compatible photonic integrated circuit device.