Raytheon Bbn Technologies Corp.

Raytheon Company

University of Central Florida Research Foundation Inc

Rtx Bbn Technologies, Inc.

Mohammad Soltani

Eduardo M Chumbes

Demetrios N Christodoulides

Mercedeh Khajavikhan

Hossein Hodaei

Photonic devices having a photonic waveguiding layer, and a cladding layer, disposed on the photonic waveguiding layer, and where the cladding section is a material comprising Scandium. The cladding layer may include a material comprising AlScN material where 0&#x3c;x&#x2264;0.45.

Photonic devices

Photonic devices having a quantum well structure that includes a Group III-N material, and a AlScN cladding layer disposed on the quantum well structure, where 0&#x3c;x&#x2264;0.45, the AlScN cladding layer having a lower refractive index than the index of refraction of the quantum well structure.

A Group III-Nitride quantum well laser including a distributed Bragg reflector (DBR). In some embodiments, the DBR includes Scandium. In some embodiments, the DBR includes AlScN, which may have 0&#x3c;x&#x2264;0.45.

Photonic devices having AlScN and AlGaN materials, where Al is Aluminum, Sc is Scandium, Ga is Gallium, and N is Nitrogen and where 0&#x3c;x&#x2264;0.45 and 0&#x2264;y&#x2264;1.

A chip-scale ultrasensitive ring laser gyroscope that utilizes the physics of exceptional points. By exploiting the properties of such non-Hermitian degeneracies, the rotation-induced frequency splitting becomes proportional to the square root of the gyration speed (&#x3a9;), thus enhancing the sensitivity to low angular rotations by orders of magnitudes. At its maximum sensitivity limit, the measurable spectral splitting is independent of the radius of the cavity rings involved. Binary and ternary systems and associated methods are described.

Rotation sensor, rotation sensing method, and applications

In one aspect, a photonic device includes a substrate layer comprising magnesium fluoride and an optical guiding layer disposed on the substrate layer. The optical guide layer includes silicon dioxide. The substrate layer and the optical guide layer are transparent at an ultraviolet and visible wavelength range. In another aspect, a method includes oxidizing silicon to form a silicon dioxide layer, bonding the silicon dioxide layer to magnesium fluoride, removing the silicon and performing lithography and etching of the silicon dioxide to form a photonic device.

Growing community of inventors

Belmont, MA, United States of America

Mohammad Soltani