Amir Hosseini

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— Given the spatial and temporal randomness of soft and permanent errors in the state-of-the-art system-on-chips (SoCs), dynamic routing algorithms that can adapt themselves accordingly are highly required for network-on-chip (NoC) applications. In this paper, we present a new dynamic routing algorithm for NoC applications that has the ability to locate and(More)
The authors would like to acknowledge the Air Force Office of Scientific Research (AFOSR) for supporting this work under the Multidisciplinary University Research Initiative (MURI) program (Grant No. FA 9550-08-1-039), monitored by Dr. Gernot Pomrenke. Abstract: We demonstrate on-chip tunable true-time-delay (TTD) lines based on photonics crystal(More)
In this paper, we present the design, fabrication, and characterization of a traveling-wave directional coupler modulator based on electro-optic polymer, which is able to provide both high linearity and broad bandwidth. The high linearity is realized by introducing Á-reversal technique in the two-domain directional coupler. A traveling-wave electrode is(More)
We demonstrate intra- and inter-board level optical interconnects using polymer waveguides and waveguide couplers consisting of both 45 degree total internal reflection (TIR) mirrors and inkjet-printed micro-lenses. Surface normal couplers consisting of 50 µm × 50 µm waveguides with embedded 45 degree mirrors are fabricated using a nickel mold imprint.(More)
We demonstrate an EO polymer based traveling-wave MMI-fed directional-coupler modulator. High-speed and linear operation is demonstrated with bandwidth-length product of 125GHz· cm, the 3-dB electrical bandwidth of 10GHz, and the SFDR of 110±3dB/Hz 2/3. A 1×2 multi-mode interference (MMI) 3-dB coupler (176.6nm×15nm) is designed to equally split the input(More)
Polymer based electro-optic modulators have shown great potentials in high frequency analog optical links. Existing commercial LiNibO3 Mach-Zehnder modulators have intrinsic drawbacks in linearity to provide high fidelity communication. In this paper, we present the design, fabrication and characterization of a traveling wave directional coupler modulator(More)
We investigate effects of different mechanisms on coupling efficiency between strip waveguides and the slow light mode in photonic crystal waveguides ͑PCWs͒. Both numerical simulations and experimental results show that group index ͑n g ͒ tapering improves strip-PCW butt-coupling efficiency when compared to a direct coupling between a strip waveguide and a(More)
High-rate roll-to-roll (R2R) tracker systems are utilized for large volume flexible electronic device manufacturing, and the current alignment mechanism between layers is mainly achieved by relying on passive techniques. In this paper, we present a machine vision based alignment strategy that is used to achieve precise registration for stacking multilayers.(More)