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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 2000),
  • paper CTuG7

Penalty-free bidirectional transmission of 4 × 10 Gbit/s signals over 88-km of true-wave fiber using an in-line semiconductor optical amplifier

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Abstract

The SOA is a promising candidate for cascaded optical fiber systems because of the coverage of the entire fiber transmission window and the possibilities for integration and low cost.1–3 Bi-directional transmission can utilize efficiently the optical fiber transmission bandwidth and reduce the complexity and cost of transmission systems and networks since SOAs do not need any optical isolators as often used in case of erbium-doped fiber amplifiers (EDFAs). In this paper, we report error-free bidirectional transmission of 4 × 10 Gbit/s signals using an in-line SOA. In order to reduce the intermodal distortion and cross talk in SOAs, one can operate SOAs in the small signal region or implement gain control schemes such as clamping the gain of SOAs using DBR structure or holding light injection.4–5 Since the method of using small signal injection is not suitable for SOAs as used in-line amplifiers, the method of holding light injection is used in our experiment.

© 2000 Optical Society of America

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