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Your search keyword '"Liboiron-Ladouceur, O."' showing total 135 results
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135 results on '"Liboiron-Ladouceur, O."'

1. Self-calibrated Microring Weight Function for Neuromorphic Optical Computing

Author

Garcia-Echeverria, J., Musat, D., Mahsafar, A., Mojaver, K. R., Rolston, D., Cowan, G., and Liboiron-Ladouceur, O.

Subjects
Electrical Engineering and Systems Science - Signal Processing, Electrical Engineering and Systems Science - Systems and Control
Abstract

This paper presents a microring resonator-based weight function for neuromorphic photonic applications achieving a record-high precision of 11.3 bits and accuracy of 9.3 bits for 2 Gbps input optical signals. The system employs an all-analog self-referenced proportional-integral-derivative (PID) controller to perform real-time temperature stabilization within a range of up to 60 degree Celsius. A self-calibrated weight function is demonstrated for a range of 6 degree Celsius with a single initial calibration and minimal accuracy and precision degradation. By monitoring the through and drop ports of the microring with variable gain transimpedance amplifiers, accurate and precise weight adjustment is achieved, ensuring optimal performance and reliability. These findings underscore the system's robustness to dynamic thermal environments, highlighting the potential for high-speed reconfigurable analog photonic networks.

Published
2024

5. Bidirectional Transmission in an Optical Network on Chip With Bus and Ring Topologies

Author

Faralli, S., Gambini, Fabrizio, Pintus, P., Scaffardi, M., Liboiron-Ladouceur, O., Xiong, Y., Castoldi, P., and Di Pasquale, F.

Subjects
photonic integrated networks on chip (NoCs), Hardware_INTEGRATEDCIRCUITS, shared source-microring and shared destination-microring, adding or dropping two optical signals at the same wavelength in the same microring of NoCs with bus and ring topology, Hardware_PERFORMANCEANDRELIABILITY, simultaneous bidirectional transmissions
Abstract

In photonic integrated networks on chip (NoCs), microrings are commonly used for adding or dropping a single optical signal to be switched in the NoC. This paper demonstrates the feasibility of adding or dropping two optical signals at the same wavelength in the same microring of NoCs with bus and ring topology. More specifically, the same microring can be used to support simultaneous bidirectional transmissions of two signals to be coupled in the NoC topology, leading to two different configurations, called shared source-microring and shared destination-microring. Spectral characterization shows good agreement between simulations and measurements taken on silicon-based integrated NoC. Bit-error-rate (BER) measurements indicate that the shared sourcemicroring configuration performs better, achieving a penalty as low as 1.5 dB for a BER of 10 -9 at 10 Gb/s in the bus NoC. A higher penalty in the ring NoC for both configurations is due to higher crosstalk in the interconnecting ring

Published
2016
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43. Analysis of low-bit soft-decision error correction in optical front ends.

Author

Fard, M. Moayedi Pour, Cowan, G., and Liboiron-Ladouceur, O.

Abstract

A novel methodology for analyzing the advantageous decoding performance of multibranch configurations of low-bit optical soft-decision forward error correction receivers is presented. The decoding performance and noise behavior of three front-end schemes are evaluated and compared. Arising from a multiple-branch configuration, the concept of inconsistency in the decoder (thermometer code) is presented and used to optimize decoding performance. The experimentally validated methodology considers both optically amplified long-haul and short-reach applications. [ABSTRACT FROM PUBLISHER]

Published
2015
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