Optical: systems and elements – Optical amplifier – Optical fiber
Patent
1996-05-20
1998-09-29
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Optical fiber
359174, 359334, H01J 516, H04B 900, H01S 3103
Patent
active
058153080
ABSTRACT:
Bidirectional WDM transmission at 2.5 Gb/s using a bidirectional erbium-doped fiber amplifier (EDFA) is demonstrated over a distance of 300 km. A symmetrical EDFA configuration with a frequency tunable reflection attenuator is used as a bidirectional amplifier. Experimental results show that the allowable gain of the EDFA can be increased significantly while the associated bit error rate BER penalty remains negligible.
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Kavehrad Mohsen
Khaleghi Farideh
Kim Hyung B.
Li Jinghui
Moskowitz Nelson
Northern Telecom Limited
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