Time-lens based optical packet pulse compression and retiming

Publication: Research - peer-reviewConference article – Annual report year: 2010

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This paper presents a new optical circuit that performs both pulse compression and frame synchronization and retiming. Our design aims at directly multiplexing several 10G Ethernet data packets (frames) to a high-speed OTDM link. This scheme is optically transparent and does not require clock recovery, resulting in a potentially very efficient solution. The scheme uses a time-lens, implemented through a sinusoidally driven optical phase modulation, combined with a linear dispersion element. As time-lenses are also used for pulse compression, we design the circuit also to perform pulse compression, as well. The overall design is: (1) Pulses are converted from NRZ to RZ; (2) pulses are synchronized, retimed and further compressed at the specially designed time-lens; and (3) with adequate optical delays, frames from different input interfaces are added, with a simple optical coupler, completing the OTDM signal generation. We demonstrate the effectiveness of the design by laboratory experiments.
Original languageEnglish
JournalProceedings of SPIE, the International Society for Optical Engineering
Publication date2010
Volume7728
Pages77280T
ISSN0277-786X
DOIs
StatePublished

Conference

ConferencePhotonics Europe
CountryBelgium
CityBrussels
Period12/04/1016/04/10
CitationsWeb of Science® Times Cited: 0

Keywords

  • pulse compression, OTDM, frame retiming, 10G Ethernet, time-lens, frame synchronization
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