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The Technology: Integrated, compact, and tunable band-interleaving. Nevertheless, the overall bandwidth of carriers faces limitations imposed by the free spectral range, and integrating photonic components with conventional integrated circuit electronics systems continues to present a significant challenge. This technology is an integrated silicon photonic band interleaver for the optimization of spectral sensing throughput for data communication applications using on chip wavelength division multiplexing. Unmet Need: Low skew, low jitter global clock for high frequency microprocessors. This technology is a distributed differential oscillator global clock network for high clock frequencies and low power requirements in microprocessors. Ensuring that the signal remains low-skew and low-jitter in the presence of varying processing, voltage, and temperature conditions is especially challenging in light of the increasingly high clock frequencies employed in modern microprocessors. However, changing analog signals, such as voltage or light intensity, into discrete information using conventional clocked ADCs can pose problems such as aliasing, high energy consumption, and silicon real-estate costs within integrated circuits. Unlike asynchronous sigma-delta modulators, the architecture produces no output in the absence of an input signal, greatly reducing power consumption without complex power-down schemes and provides a significantly reduced loop delay, increasing the possible frequency of operation with better resolution and without slope overload. It requires no anti-aliasing filter, making the circuit extremely power efficient and compact. 
