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We demonstrate 40 × 43Gbit/s RZ-DQPSK transmission over 1000km of ultra-low-loss G.652 fibre with 250km amplifier spacing. Hybrid Raman-EDFA amplification with co- and contra-directional Raman pumping enables 27dB Raman gain per span and error-free post-FEC performance.
An ultrafast bit rate and format transparent all-optical packet equalizer is presented, based on fiber-optic parametric amplification. Its equalizing performance is investigated for 43 Gbaud OOK, DPSK and DQPSK signals. The improvement is verified in transmission experiments over 1000km dispersion-managed fiber.
A 16×112 Gb/s field trial with EDFA only was performed over legacy fiber infrastructure partially with high PMD. Based on 43 Gb/s components we demonstrate by use of 112 Gb/s NRZ-DQPSK modulation format Metro DWDM transmission with carrier-grade margins of more than 4 dB over ultimate Metro distances.
A remote node design for C + L band amplification is characterized and shown to cover the advanced optical power budget for a 55 km reach, 1:32 split hybrid Passive Optical Network (PON) with symmetrical full-duplex 10 Gb/s transmission. Different types of Erbium-doped fiber, designed for the C- and L-band are evaluated in a bidirectional amplification stage at the remote nodes of a ring + tree network,...
The Erbium-doped Fiber Amplifier (EDFA) is a key technical feature in nearly every optical undersea transmission system. This paper reviews simple performance enhancing Raman and ROPA assisted amplifier architectures.
Buffering in all-optical networks is an important need and there are several approaches that have attempted to propose partial solutions, since optical memories are out of reach, nowadays. In this paper, we review the major approaches based on architectures using fixed length fiber delay lines (FDL). The main idea of these architectures is to lead optical packets in fiber and to profit from the transmitting...
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