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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 29, Iss. 19 — Oct. 1, 2011
  • pp: 3015–3021

Realization of All-Optical Digital Comparator Using Single Mode Fabry–Pérot Laser Diodes

Bikash Nakarmi, M. Rakib-Uddin, and Yong Hyub Won

Journal of Lightwave Technology, Vol. 29, Issue 19, pp. 3015-3021 (2011)


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Abstract

A two-bit all-optical digital comparator using single mode Fabry–Pérot laser diodes (SMFP-LDs) at an input data rate of 10 Gbps is proposed and demonstrated. All-optical comparator is demonstrated using cascaded logic units which are based on injection locking, multi-input injection locking and supporting beam principles for suppressing the dominant mode of SMFP-LDs. Digital comparators are the key components for the decision making circuits, the integral part of the arithmetic and logical units of optical data processors. The output performance of the proposed all-optical comparator is verified with output waveform, rising-falling time, output eye diagram, and bit error rate (BER) at 10 Gbps input Non Return to Zero (NRZ) PRBS of 231-1 signal. The rising/falling time of about 47 ps, clear output waveforms, and clear output eye diagram with an extinction ratio of about 12 dB are obtained. A maximum power penalty of 1.3 dB is measured at a BER of 10-9.

© 2011 IEEE

Citation
Bikash Nakarmi, M. Rakib-Uddin, and Yong Hyub Won, "Realization of All-Optical Digital Comparator Using Single Mode Fabry–Pérot Laser Diodes," J. Lightwave Technol. 29, 3015-3021 (2011)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-29-19-3015


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