Power-efficient calibration and reconfiguration for on-chip optical communication

Zheng, Yan; Lisherness, Peter; Gao, Ming; Bovington, Jock; Yang, Shuaishuai; Cheng, Kwang-Ting

doi:10.1109/date.2012.6176711

Cited by 2 publications

(2 citation statements)

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“…12 show that the receiver power of both the fixed design and the tunable design are decoupled from the temperature variation. This is because the channel remapping technique [26] decouples the required tuning distance from the the thermal variation when the process variation (3σ = 1.32nm) is greater than the channel spacing (0.9 nm). This decoupled phenomenon has also been observed in [9], [26].…”

Section: B Process and Thermal Variationsmentioning

confidence: 98%

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Variation-aware adaptive tuning for nanophotonic interconnects

Wu¹,

Chen²,

Li³

et al. 2015

2015 IEEE/ACM International Conference on Computer-Aided Design (ICCAD)

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Short-reach nanophotonic interconnects are promising to solve the communication bottleneck in data centers and chip-level scenarios. However, the nanophotonic interconnects are sensitive to process and thermal variations, especially for the microring structures, resulting in significant variation of an optical link's bit error rate (BER). In this paper, we propose a power-efficient adaptive tuning approach for nanophotonic interconnects to address the variation issues. During the adaptive tuning process, each nanophotonic interconnect is adaptively allocated just enough power to meet the BER requirement. The proposed adaptive tuning approach could reduce the photonic receiver power by 8% -34% than the worst-case based fixed design while achieving the same BER. Our evaluation results show that the adaptive tuning approach scales well with the process variation, the thermal variation and the number of communication nodes, and can accommodate different types of NoC architectures and lasers.

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Section: B Process and Thermal Variationsmentioning

confidence: 98%

“…The electrical tuning is usually utilized to compensate for the wavelength mismatch because it's more power efficient than the thermal tuning [13], [26]. However, the Q and the ER degrade significantly when the tuning voltage is applied to the microring resonator (Fig.…”

Section: Variation Challengesmentioning

confidence: 99%