Abstract: A photonic device configured to perform matrix vector multiplication operations at high frequencies is provided. The vector being multiplied by the matrix is defined by vector components at specific wavelengths. The device includes a first waveguide and a second waveguide. A series of tunable microring resonators (MRRs) are coupled to the first waveguide and to a respective series of passive delay rings (PDRs), which are coupled to the second waveguide. Each MRR/PDR pair defines a tunable matrix component (tunable weight) for a respective wavelength component of the vector. A series of controllable delay elements (CDEs) such as all-pass filters are coupled to the first waveguide, upstream from the tunable MRRs. Any tuning dependent group delay caused by the MRR/PDR pairs can be compensated by controlling the CDEs such that each wavelength components has substantially a same delay as the other wavelength components.

Abstract: A circuit breaker box comprising a main circuit breaker for operatively connecting to hot service wires; first and second hot bus bars configured to receive power from the main circuit breaker; a plurality of receiver terminals configured to transfer power from a circuit breaker component to a first wire of an electrical circuit; and a safety shield for enclosing the hot bus bars and receiver terminals, wherein a plurality of slots is disposed in the safety shield, the slots are aligned with the first or second hot bus bars and receiver terminals, wherein the circuit breaker component comprises a first and a second prong contact for contacting the first or second hot bus bar and a receiver terminal, respectively.

Abstract: A circuit breaker box comprising a main circuit breaker for operatively connecting to hot service wires; first and second hot bus bars configured to receive power from the main circuit breaker; a plurality of receiver terminals configured to transfer power from a circuit breaker component to a first wire of an electrical circuit; and a safety shield for enclosing the hot bus bars and receiver terminals, wherein a plurality of slots is disposed in the safety shield, the slots are aligned with the first or second hot bus bars and receiver terminals, wherein the circuit breaker component comprises a first and a second prong contact for contacting the first or second hot bus bar and a receiver terminal, respectively.