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Real-time detection of femtosecond optical pulse sequences via time-to-space conversion in the lightwave communications band

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2 Author(s)
Jung-Ho Chung ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Weiner, A.M.

A spectral nonlinear optics time-to-space converter operating in the lightwave communications band is reported for the first time. We demonstrate serial-to-parallel conversion of short frames of femtosecond pulses, for the first time operating at a conversion efficiency level allowing direct electronic readout at a conversion rate of hundreds of megaframes/s in real time, without signal averaging and with good signal-to-noise ratio. The results demonstrate that applications such as real-time measurements of ultrafast optical data sequences and header recognition in ultrafast optical time-division-multiplexed (OTDM) packet networks are approaching feasibility. Moreover, we analyze tradeoffs between optical powers and data rates from a system perspective, which allows us to assess the challenges for scaling to parallel demultiplexing of bit-interleaved OTDM transmission systems.

Published in:

Lightwave Technology, Journal of  (Volume:21 ,  Issue: 12 )

Date of Publication:

Dec. 2003

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