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In this work we report on a packaged prototype of a WDM photonic transceiver. It is a hybrid assembly based on a 130 nm SOI photonic circuitry integrated with a 40 nm CMOS VLSI driver. Our prototype supports eight tunable WDM channels operating at 10 Gb/s each capable of both transmitting and receiving data on the same chip. We discuss two options to close the link while using the optical fiber or...
High-speed data transceiver circuits employ several techniques for dealing with noise, such as using differential architectures. However, under certain circumstances, a transceiver's dominant noise can be bounded and band-limited; and in those cases simpler noise cancellation circuits may suffice. For such transceivers we have designed a tracking circuit to effectively suppress noise. In a 40 nm CMOS...
We report an ultra-low power 100Gbps silicon photonic WDM transmitter tunable with off-chip laser sources. The hybrid CMOS transmitter consists of eight 12.6Gbps WDM channels and consumes a total on-chip power of 33mW.
Phthalates are used as plasticizers in many commodities and materials. Therefore, they are found everywhere as contaminants in food and in environmental samples. Due to their potential for developmental and reproductive toxicity, some congeners pose a health risk for consumers and their use is legally restricted with bans and limits. This, however, applies only partly to their usage in cosmetics,...
Recent advances in silicon photonics bring significant benefits to "macrochip" grids made of arrayed chips. Such configurations have global interconnects long enough to benefit from the high speed, low energy, and high bandwidth density of optics. In this paper we consider the constraints of large macrochip systems, and explore modulator drivers and photodetector receivers that match those...
This paper describes the algorithm and design tradeoffs for multiple hardware implementations of parallel high-radix scalable Montgomery multipliers. Hardware implementations of Montgomery multipliers require choosing a radix, shift direction, and whether to use Booth encoding. Presented are processing element designs exploring combinations of radices 2, 4, and 8, right vs. left shifting, and Booth...
Oceanographic and water quality investigations often require an integrated approach to sampling. This integrated sampling couples intensive field measurements from a vessel with continuous measurements at selected locations. Real time collection and analysis of continuous data enables researchers to adjust field sampling locations during cruises to fit the oceanographic conditions, thereby obtaining...
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