Abstract: Apparatuses and methods are provided for generating an optical frequency comb with a standing wave optical resonator including a Bragg grating. The Bragg grating shifts alternatively higher and lower wavelengths of resonances in a stop bandwidth of the Bragg grating. A resonance in the stop bandwidth whose wavelength is shifted higher can be used to compensate for shifting of the wavelength lower due to the Kerr effect.

Abstract: Apparatuses and methods are provided for an optical frequency converter configured to double or have a carrier frequency of an input optical signal. The input optical signal provided to the optical frequency converter is a higher order mode than a mode of the output optical signal. The optical frequency converter comprises a core, cladding material, and a substrate. The core includes a first core portion of non-linear crystalline material which is non-centrosymmetric, and a second core portion and a third core portion of the non-linear crystalline material each of which is centrosymmetric. The first, the second, and the third core portions are coplanar with and adjacent to the first core portion between the second and the third core portions.

Abstract: A priority encoder circuit for detecting multiple match in a CAM, the priority encoder comprising a plurality of inputs each for receiving a respective matchline signal, the inputs being arranged in a predetermined priority order and being enabled by a matchline signal being received thereon; a plurality of outputs corresponding to ones of said inputs; means for enabling one of the outputs corresponding to an enabled input, that is of the highest priority; and a circuit for logically combining a sufficient number of the inputs and outputs of the PE in order to determine whether more than one respective matchline signals has been received, the determination is based on an observation that for every match line input to the PE, there is a corresponding output from the PE and that the highest priority match should have the match line as well as its corresponding priority match output enabled and that if a match line output is enabled but its corresponding output is not, then there is another higher priority match