Highly efficient electrical dispersion compensation scheme for optical single sideband systems

Abstract

A highly efficient use of electrical dispersion compensation in optical single sideband systems is proposed. BER not exceeding 10 -12 is attained using a 10 Gb/s transmission system with 1200 km without optical dispersion compensation techniques.

Recent Developments on Optical Single Sideband Transmission Systems

“…However, most EDC techniques use digital processing which limits its application in 40 Gb/s systems. Simple EDC has been proposed with OSSB modulation, resorting to a simple electrical dispersive line at the transmitter or receiver [3,[6][7][8][9][10]. This property allows considering OSSB as one of the most promising modulation formats of the future.…”

“…However, the efficiency of this technique increases with the decrease of the extinction ratio of the OSSB signal and is very reduced for modulations without a discrete component at the carrier frequency. To overcome such limitations, we have proposed the application of the EDC in the transmitter side, allowing the use of any coding format together with OSSB modulation and EDC [6][7]10]. Besides changing the position of ICTON 2006 the EDC from the receiver to the transmitter, no other changes are required in the transmission system, as can be seen from Fig.…”

“…3a and 3b. Using pre-EDC, the signal is pre-distorted by the amount of fibre dispersion at the input of the transmission link and the eye pattern is open at the input of the photodetector [10]. As a consequence, coding formats without a discrete component at the carrier frequency can be used.…”