Apple Inc.

Keyssa Systems, Inc.

Lockheed Martin Corporation

The Mitre Corporation

Mohamed Mahmoud

Eric Sweetman

Mark Alan Arbore

Jason S Pelc

Yi-Kuei Ryan Wu

Thomas Charles Greening

Matthew Austin Terrel

Mostafa Naguib Abdulla

Yongming Tu

Alan Besel

Giriraj Mantrawadi

Ahmed Khidre

Bojana Zivanoic

Lawrence K Lam

Alfredo Bismuto

Basrur R Rao

Peter Chang

Albert T Ngo

Huiyang Deng

Lucia Gan

Edward N Rosario

Satyarth Suri

Marc L Peloquin

Disclosed herein is an integrated photonics device including an on-chip wavelength stability monitor. The wavelength stability monitor may include one or more interferometric components, such as Mach-Zehnder interferometers and can be configured to select among the output signals from the interferometric components for monitoring the wavelength emitted by a corresponding photonic component, such as a light source. The selection may be based on a slope of the output signal and in some examples may correspond to a working zone at or around a wavelength or wavelength range. In some examples, the interferometric components can be configured with different phase differences such that the corresponding working zones have different wavelengths. In some examples, the slopes of the output signals may be weighted based on the steepness of the slope and all of the output signals may include information for wavelength locking the measured wavelength to the target wavelength.

Mach-Zehnder interferometer device for wavelength locking

Anti-reflective optical structures are disclosed. The anti-reflective optical structures include sub-wavelength structures in order to produce one or more index of refraction gradients within the anti-reflective optical structures. The one or more index of refraction gradients can reduce reflection of light over a broad band of wavelengths.

Anti-reflective optical structures for optical systems

Configurations for an optical device used for light splitting and wavelength locking are disclosed. The optical device may be a two by three coupler with a first waveguide coupled to a second waveguide, and a third waveguide coupled to the second waveguide. The first and third waveguides may receive input light and optically couple light to the second waveguide. The output signals of the first, second, and third waveguides may have a constant phase difference from one another over a broadband wavelength range, which may allow for phase unwrapping. By phase unwrapping the output signals over an FSR and performing further phase unwrapping over the broadband wavelength range, a continuous signal may be produced and used to sequentially lock each wavelength of light emitted by light sources over the broadband wavelength range.

Coupling devices and methods, wavelength locking systems and methods, and phase unwrapping systems and methods

A cantilever beam waveguide for a silicon photonics device may be formed in a device layer (e.g., a silicon device layer) of a silicon photonics device (e.g., a chip) and may be configured to bend to align the cantilever beam waveguide or a portion thereof with one or more additional components of the silicon photonics device or another device, including output couplers, optical sources, and waveguides.

Cantilever beam waveguide for silicon photonics device

Systems and apparatuses for electromagnetic communications are provided. One of the apparatuses includes a housing portion for an electronic device, wherein the housing portion comprises: a first region formed from a first material; and a second region comprising an arrangement of structures formed from the first material and a second material, wherein the arrangement of structures reduce propagation of electromagnetic radiation propagating through the second region.

Structures for cross-talk reduction

Methods, systems, and apparatus for EM isolation structures. One of the apparatus includes a communication module, the communication module including: a printed circuit board; a plurality of integrated circuit packages, each integrated circuit package including at least one transmitter, receiver, or transceiver; and one or more metallic blocking structures configured to at least partially encircle a corresponding one of the plurality of integrated circuit packages, wherein each metallic blocking structure is configured to reduce signal leakage from the corresponding integrated circuit package.

Signal isolation structures for EM communication

An array antenna is arranged in an innovative sparse trifilar configuration. The antenna elements forming the array antenna are arranged to form three non-linear arrays. The antenna elements are approximately aligned to a triangular lattice structure with the antenna elements of each non-linear array occupying adjacent lattice positions. The three non-linear arrays are separated from each other by vacant lattice positions, thereby making the configuration a sparse array.

Sparse trifilar array antenna

An antenna assembly includes a conducting ground plane, a single dielectric substrate layer or a plurality of dielectric substrate layers each with different dielectric constants mounted to the conducting ground plane. A central patch element is mounted to the dielectric substrate layer or layers and configured to radiate within a first frequency band. A plurality of probes (i) extend through the conducting ground plane and the dielectric substrate and (ii) are physically connected to the central patch element. A parasitic ring is disposed around the central patch element and reactively coupled thereto. The parasitic ring is configured to radiate within a second frequency band.

System for co-planar dual-band micro-strip patch antenna

Growing community of inventors

Sunnyvale, CA, United States of America

Mohamed Mahmoud