High dynamic extinction ratio and pulse modulation of optical signals. (October 2015)

• Record Type: Journal Article
• Authors: Petrov, A; Tronev, A V; Lebedev, V; Il'ichev, I V; Velichko, E; Shamray, A
• Is Part Of: Journal of physics. Number 643(2015)
• Publication Date: 2015-10
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/643/1/012038
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: The use of a saturable absorber for increasing the extinction ratio at external modulation of optical signals is considered. An erbium doped fiber was used as the saturable absorber in the experiments. A considerable increase in the static extinction ratio (up to 50 dB) was demonstrated. A rather long erbium doped fiber relaxation time (about 10 ms) was a limiting factor in the case of pulse modulation. Ways of overcoming this drawback are discussed.