All-Optical Tag Comparison for Hit/Miss Decision in Optical Cache Memories

An all optical multi-wavelength tag comparator unit followed by a semiconductor optical amplifier-read access gate (SOA-RAG) is presented for all-optical cache memory architectures. Proof-of-principle operation of the Tag Comparison (TC) circuit as a dual-bit tag-comparison stage is presented by exp...

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Published in:IEEE photonics technology letters 2016-04, Vol.28 (7), p.713-716
Main Authors: Vagionas, C., Pitris, S., Mitsolidou, C., Bos, J., Maniotis, P., Tsiokos, D., Pleros, N.
Format: Article
Language:English
Subjects:
Adaptive optics
Amplification
Circuits
Comparators
Cross Gain Modulation
Cross Phase Modulation
Interferometers
Logic circuits
Logic gates
Optical Cache Memory
Optical Interconnects
Optical interferometry
Optical memory (data storage)
Optical pulses
Optical RAM
Random access memory
Semiconductor optical amplifiers
Semiconductors
Tag Comparator
Wavelength division multiplexing
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cited_by cdi_FETCH-LOGICAL-c324t-cdf5455c981467a47bc8ed0194d143055d55c7788898b77f4ded3d8fc51c2d943
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container_end_page 716
container_issue 7
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container_title IEEE photonics technology letters
container_volume 28
creator Vagionas, C.
Pitris, S.
Mitsolidou, C.
Bos, J.
Maniotis, P.
Tsiokos, D.
Pleros, N.
description An all optical multi-wavelength tag comparator unit followed by a semiconductor optical amplifier-read access gate (SOA-RAG) is presented for all-optical cache memory architectures. Proof-of-principle operation of the Tag Comparison (TC) circuit as a dual-bit tag-comparison stage is presented by exploiting cross-phase modulation-based XOR logic gates based on SOA-Mach-Zehnder interferometers (SOA-MZIs), in order to decide upon a cache hit or cache miss operation, while the two SOA-MZI outputs control the ON/OFF cross-gain-modulation of the SOA-RAG unit. Experimental error free operation is demonstrated for a 8 × 10-Gb/s wavelength division multiplexing (WDM) formatted optical word signal and a 4 × 10-Gb/s WDM tag.
doi_str_mv 10.1109/LPT.2015.2505500
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source IEEE Electronic Library (IEL) Journals
subjects Adaptive optics
Amplification
Circuits
Comparators
Cross Gain Modulation
Cross Phase Modulation
Interferometers
Logic circuits
Logic gates
Optical Cache Memory
Optical Interconnects
Optical interferometry
Optical memory (data storage)
Optical pulses
Optical RAM
Random access memory
Semiconductor optical amplifiers
Semiconductors
Tag Comparator
Wavelength division multiplexing
title All-Optical Tag Comparison for Hit/Miss Decision in Optical Cache Memories
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